Historical components of the S&P 600

For a list of the current components of the index, see List of S&P 600 companies.

S&P Dow Jones Indices updates the components of stock market indices periodically, typically in response to acquisitions, corporate spin-offs, or upon quarterly rebalancing. The following is a list of historical changes to the components of the S&P 600:

Date	Added		Removed		Reason	Refs
	Ticker	Security	Ticker	Security
August 4, 2026	ADIG	ADI Global Distribution	HTZ	Hertz Global Holdings	Resideo completed the corporate spin-off of ADI Global Distribution.
August 3, 2026	FIVN	Five9	TWO	Two Harbors Investment	FIVN replaced TWO after it was acquired by CrossCountry Mortgage.
July 27, 2026	VVX	V2X, Inc.	AVNS	Avanos Medical	V2X replaced AVNS after it was acquired by American Industrial Partners.
July 24, 2026	TPC	Tutor Perini	KRYS	Krystal Biotech	TPC replaced KRYS, which replaced Taylor Morrison in the S&P 400 after it was acquired by Berkshire Hathaway.
July 22, 2026	ROAD	Construction Partners	MOH	Molina Healthcare	ROAD replaced MOH, which replaced National Storage Affiliates Trust in the S&P 400 after it was acquired by Public Storage.
July 17, 2026	KRMN	Karman Holdings	BTSG	BrightSpring Health Services	KRMN replaced BTSG, which replaced Chart Industries in the S&P 400 after it was acquired by Baker Hughes.
July 15, 2026	SEI	Solaris Energy Infrastructure	CPRX	Catalyst Pharmaceuticals	SEI replaced CPRX after it was acquired by Angelini.
July 8, 2026	LEU	Centrus Energy	WSR	Whitestone REIT	LEU replaced WSR after it was acquired by Ares Management.
July 8, 2026	MFP	Midera Food Processing	RWT	Redwood Trust	Middleby completed the corporate spin-off of Midera Food Processing.
July 6, 2026	GT	Goodyear Tire and Rubber Company	STEL	Stellar Bancorp	STEL was acquired by Prosperity Bancshares.
July 1, 2026	MBGL	Mobility Global	CLB	Core Laboratories	S&P Global completed the corporate spin-off of Mobility Global.
July 1, 2026	GPOR	Gulfport Energy	SEM	Select Medical	GPOR replaced SEM after it was acquired by a consortium consisting of several executives of SEM and WCAS.
July 1, 2026	CAG	Conagra Brands	GDYN	Grid Dynamics Holdings	Market capitalization changes.
July 1, 2026	NHI	National Health Investors	ARI	Apollo Commercial Real Estate Finance	NHI replaced ARI after it announced liquidation and was no longer appropriate for the S&P 600.
June 29, 2026	NTST	NETSTREIT	PRA	ProAssurance	ProAssurance was acquired by The Doctors Company.
June 22, 2026	POOL	Pool Corporation	EMBC	Embecta	Market capitalization changes.
June 22, 2026	CPB	Campbell's	UHT	Universal Health Realty Income Trust	Market capitalization changes.
June 22, 2026	COTY	Coty	SMTC	Semtech	Market capitalization changes.
June 22, 2026	CNXC	Concentrix	SANM	Sanmina Corporation	Market capitalization changes.
June 22, 2026	BLKB	Blackbaud	VIAV	Viavi Solutions	Market capitalization changes.
June 22, 2026	CACC	Credit Acceptance	OXM	Oxford Industries	Market capitalization changes.
June 22, 2026	LAZ	Lazard	GOGO	Gogo Inflight Internet	Market capitalization changes.
June 22, 2026	EBC	Eastern Bankshares	PRAA	PRA Group	Market capitalization changes.
June 22, 2026	WSBC	WesBanco	IIIN	Insteel Industries	Market capitalization changes.
June 22, 2026	WRBY	Warby Parker	ETD	Ethan Allen Interiors	Market capitalization changes.
June 22, 2026	NIC	Nicolet Bankshares	CTKB	Cytek Biosciences	Market capitalization changes.
June 22, 2026	LQDA	Liquidia	MNRO	Monro Muffler Brake	Market capitalization changes.
June 22, 2026	RSI	Rush Street Interactive	VITL	Vital Farms	Market capitalization changes.
June 22, 2026	USLM	United States Lime & Minerals	CABO	Cable One	Market capitalization changes.
June 22, 2026	IVT	InvenTrust Properties	FWRD	Forward Air	Market capitalization changes.
June 16, 2026	FA	First Advantage	KW	Kennedy Wilson	FA replaced KW after it was acquired by consortium led by KW's CEO, William J. McMorrow, with Fairfax Financial.
June 9, 2026	DMC	Del Monte Corporation	FDP	Fresh Del Monte Produce Inc.	DMC replaced FDP after Fresh Del Monte was renamed to Del Monte Corporation.
June 2, 2026	EPAM	EPAM Systems	SSTK	Shutterstock	SSTK merged with Getty Images.
June 1, 2026	DAVE	Dave	AMWD	American Woodmark	American Woodmark was acquired by MasterBrand Inc.
May 27, 2026	UTI	Universal Technical Institute	VRE	Veris Residential	Veris Residential was acquired by Affinius Capital and Vista Hill Partners.
May 18, 2026	PTON	Peloton Interactive	NVRI	Enviri	PTON replaced NVRI after it completed the corporate spin-off of assets into a new publicly traded company. The new publicly traded company was not representative of the small-cap market space.
May 19, 2026	FG	F&G	MCW	Mister Car Wash	FG replaced MCW after it was acquired by Leonard Green & Partners.
May 18, 2026	FLO	Flowers Foods	CSGS	CSG Systems	FLO replaced CSGS after it was acquired by NEC.
May 14, 2026	ALHC	Alignment Healthcare	SNCY	Sun Country Airlines	ALHC replaced SNCY after it was acquired by Allegiant Travel Company.
May 14, 2026	BFAM	Bright Horizons	TPH	Tri Pointe Homes	BFAM replaced TPH after it was acquired by Sumitomo Forestry.
May 14, 2026	RELY	Remitly	APLS	Apellis Pharmaceuticals	RELY replaced APLS after it was acquired by Biogen.
May 8, 2026	AGNT	eXp World Holdings, Inc.	EXPI	eXp World Holdings, Inc.	EXPI changed symbol to AGNT after coprorate rebrand.
May 1, 2026	LFST	Lifestance Health	GDEN	Golden Entertainment	LFST replaced GDEN after it was acquired by Vici Properties and Blake L. Sartini.
April 24, 2026	EFOR	Everforth Inc.	ASGN	ASGN Inc.	ASGN changed symbol to EFOR after corporate rebrand.
April 10, 2026	DBD	Diebold Nixdorf	SEE	Sealed Air	DBD replaced SEE after it was acquired by Clayton, Dubilier & Rice.
April 9, 2026	BNL	Broadstone Net Lease	DOCN	DigitalOcean	BNL replaced DOCN, which replaced Casey's in the S&P 400 after it was moved to the S&P 500.
April 9, 2026	ATMU	Atmus Filtration Technologies	AL	Air Lease Corporation	ATMU replaced AL after it was acquired by Sumitomo Corporation.
April 2, 2026	VGNT	Versigent	TWI	Titan Tire Corporation	Aptiv completed the corporate spin-off of Versigent.
March 25, 2026	COCO	Vita Coco	TGNA	Tegna Inc.	COCO replaced TGNA after it was acquired by Nexstar Media Group.
March 23, 2026	MTCH	Match Group	SOLS	Solstice Advanced Materials	Market capitalization changes.
March 23, 2026	MOH	Molina Healthcare	SITM	SiTime	Market capitalization changes.
March 23, 2026	LW	Lamb Weston	MOG.A	Moog Inc.	Market capitalization changes.
March 23, 2026	PAYC	Paycom	IDCC	InterDigital	Market capitalization changes.
March 23, 2026	VSEC	VSE Corporation	VICR	Vicor Corporation	Market capitalization changes.
March 23, 2026	AGX	Argan	CTRE	CareTrust REIT	Market capitalization changes.
March 23, 2026	RITM	Rithm Capital	PLAY	Dave & Buster's	Market capitalization changes.
March 23, 2026	LYFT	Lyft	SXC	SunCoke Energy	Market capitalization changes.
March 23, 2026	LAUR	Laureate Education	AHRT	AH Realty Trust	Market capitalization changes.
March 23, 2026	LTH	Life Time Group Holdings	INN	Summit Hotel Properties	Market capitalization changes.
March 23, 2026	LIF	Life360	KREF	KKR Real Estate Finance Trust	Market capitalization changes.
March 23, 2026	SPHR	Sphere Entertainment	BLMN	Bloomin' Brands	Market capitalization changes.
March 23, 2026	GTM	ZoomInfo	MYGN	Myriad Genetics	Market capitalization changes.
March 23, 2026	ASGN	ASGN	CARS	Cars.com	Market capitalization changes.
March 23, 2026	KMPR	Kemper Corporation	ANGI	Angi Inc.	Market capitalization changes.
March 13, 2026	NSSC	Napco Security Technologies	ALEX	Alexander & Baldwin	NSSC replaced ALEX after it was acquired by an investor group comprising MW Group and funds affiliated with DivcoWest and Blackstone Inc..
February 12, 2026	RNG	RingCentral	HI	Hillenbrand	RNG replaced HI after it was acquired by Lone Star Funds.
February 11, 2026	MBIN	Merchants Bancorp	THS	TreeHouse Foods	MBIN replaced THS after it was acquired by Investindustrial S.A.
February 10, 2026	OSW	OneSpaWorld Holdings	DVAX	Dynavax Technologies	OSW replaced DVAX after it was acquired by Sanofi.
February 9, 2026	ADT	ADT Inc.	ARWR	Arrowhead Pharmaceuticals	ADT replaced ARWR, which replaced Ciena in the S&P 400 after it was moved to the S&P 500.
February 2, 2026	LZ	LegalZoom	ELME	Elme Communities	LZ replaced ELME after ELME announced ongoing liquidation activities and was no longer appropriate for the S&P 600.
February 2, 2026	APLS	Apellis Pharmaceuticals	AEIS	Advanced Energy	APLS replaced AEIS, which replaced Comerica in the S&P 400 after it was acquired by Fifth Third Bank.
January 30, 2026	AMRX	Amneal Pharmaceuticals	TTMI	TTM Technologies	AMRX replaced TTMI, which replaced Civitas Resources in the S&P 400 after it was acquired by SM Energy.
January 26, 2026	WINA	Winmark	GES	Guess, Inc.	WINA replaced GES after it was acquired by Authentic Brands Group and the Rolling Stockholders.
January 7, 2026	VSNT	Versant	BDN	Brandywine Realty Trust	Comcast completed the corporate spin-off of Versant.
December 26, 2025	OPLN	OPENLANE	KAR	OPENLANE	Ticker symbol for OPENLANE changed from KAR to OPLN.
December 22, 2025	PRIM	Primoris Services Corporation	SPXC	SPX Corporation	PRIM replaced SPXC, which replaced Comfort Systems USA in the S&P 400 after it was moved to the S&P 500.
December 22, 2025	UA/UAA	Under Armour (Class A & C)	DY	Dycom Industries	Market capitalization changes.
December 22, 2025	POWI	Power Integrations	HL	Hecla Mining	Market capitalization changes.
December 22, 2025	PRGO	Perrigo	RC	Ready Capital	Market capitalization changes.
December 22, 2025	IRDM	Iridium Communications	SITC	SITE Centers	Market capitalization changes.
December 22, 2025	VAC	Marriott Vacations Worldwide	THRY	Thryv	Market capitalization changes.
December 22, 2025	NSP	Insperity	HELE	Helen of Troy Limited	Market capitalization changes.
December 22, 2025	CWST	Casella Waste Systems	ASIX	AdvanSix	Market capitalization changes.
December 22, 2025	INDV	Indivior	RGR	Sturm, Ruger & Co.	Market capitalization changes.
December 22, 2025	HE	Hawaiian Electric Industries	MGPI	MGP Ingredients	Market capitalization changes.
December 22, 2025	LKQ	LKQ Corporation	BWA	BorgWarner	Market capitalization changes.
December 22, 2025	SOLS	Solstice Advanced Materials	CEVA	CEVA, Inc.	Market capitalization changes.
December 22, 2025	MHK	Mohawk Industries	SCVL	Shoe Carnival	Market capitalization changes.
December 15, 2025	SEZL	Sezzle	VTLE	Vital Energy	Vital Energy was acquired by Crescent Energy.
December 11, 2025	VITL	Vital Farms	HSII	Heidrick & Struggles International	Heidrick & Struggles International was acquired by Advent International and Corvex Private Equity.
December 2, 2025	FIBK	First Interstate BancSystem	HBI	Hanesbrands	Hanesbrands was acquired by Gildan.
November 28, 2025	PTCT	PTC Therapeutics	SNDK	SanDisk	SanDisk replaced The Interpublic Group of Companies in the S&P 500 after it was acquired by Omnicom Group.
November 28, 2025	UPWK	Upwork	PINC	Premier	Premier was acquired by Patient Square Capital.
November 13, 2025	RRR	Red Rock Resorts, Inc.	STRL	Sterling Infrastructure	RRR replaced STRL, which replaced Light & Wonder in the S&P 400 after it delisted from the Nasdaq.
November 4, 2025	EMN	Eastman Chemical Company	CAL	Caleres	EMN was moved from the S&P 500 as it was more representative of the small cap market space. CAL was removed from the S&P 600 as it was no longer representative of the small-cap market space.
October 31, 2025	KMX	CarMax	USNA	USANA Health Sciences	KMX was moved from the S&P 500 as it was more representative of the small cap market space. USNA was removed from the S&P 600 as it was no longer representative of the small-cap market space.
October 20, 2025	BTSG	BrightSpring Health Services	VBTX	Veritex Holdings	BTSG replaced VBTX after it was acquired by Huntington Bancshares.
October 6, 2025	WU	Western Union	COOP	Mr. Cooper	COOP was acquired by Rocket Companies. WU was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
September 26, 2025	ACMR	ACM Research	KLG	WK Kellogg Co	ACMR replaced KLG after it was acquired by Ferrero.
September 24, 2025	REYN	Reynolds Consumer Products	SPTN	SpartanNash	REYN replaced SPTN after it was acquired by C&S Wholesale Grocers.
September 22, 2025	HL	Hecla Mining	SLP	Simulations Plus	HL replaced SLP as it was no longer representative of the small-cap market space.
September 22, 2025	WAY	Waystar Holding	JACK	Jack in the Box	WAY replaced JACK as it was no longer representative of the small-cap market space.
September 22, 2025	QTWO	Q2 Holdings	BGS	B&G Foods	QTWO replaced BGS as it was no longer representative of the small-cap market space.
September 22, 2025	NE	Noble Corporation	OMI	Owens & Minor	NE replaced OMI as it was no longer representative of the small-cap market space.
September 22, 2025	MAN	ManpowerGroup	MLAB	Mesa Laboratories	MAN was moved from the S&P 400 as it was more representative of the small cap market space. MLAB was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 22, 2025	ACHC	Acadia Healthcare	TTGT	Techtarget	ACHC was moved from the S&P 400 as it was more representative of the small cap market space. TTGT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 22, 2025	WEN	The Wendy's Company	XRX	Xerox	WEN was moved from the S&P 400 as it was more representative of the small cap market space. XRX was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 22, 2025	ENPH	Enphase Energy	PUMP	ProPetro Holding	ENPH was moved from the S&P 500 as it was more representative of the small cap market space. PUMP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 22, 2025	CZR	Caesars Entertainment	KTOS	Kratos Defense & Security Solutions	CZR was moved from the S&P 500 as it was more representative of the small cap market space. KTOS was moved to the S&P 400 as it was more representative of the mid-cap market space.
September 22, 2025	MKTX	MarketAxess	MP	MP Materials	MKTX was moved from the S&P 500 as it was more representative of the small cap market space. MP was moved to the S&P 400 as it was more representative of the mid-cap market space.
September 9, 2025	MIR	Mirion Technologies	GMS	GMS, Inc.	MIR replaced GMS after it was acquired by Home Depot.
September 8, 2025	PRKS	United Parks & Resorts	FL	Foot Locker	PRKS replaced FL after it was acquired by Dick's Sporting Goods.
September 2, 2025	ADAM	Adamas Trust, Inc.	NYMT	New York Mortgage Trust, Inc.	NYMT now trades under symbol ADAM after corporate rebrand.
September 2, 2025	BHLB	Berkshire Hills Bancorp	BBT	Beacon Financial Corp.	BHLB acquired Brookline Bancorp. Post merger, BHLB remained in the S&P 600 with a name change to Beacon Financial Corp and ticker change to BBT.
September 2, 2025	SRPT	Sarepta Therapeutics	BRKL	Brookline Bancorp	BRKL was acquired by Berkshire Hills Bancorp. SRPT was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
September 2, 2025	KNTK	Kinetik Holdings	PPBI	Pacific Premier Bancorp	KNTK replaced PPBI after it was acquired by Columbia Banking System, Inc.
August 6, 2025	KGS	Kodiak Gas Services	NVEE	NV5 Global	KGS replaced NVEE after it was acquired by Acuren Corporation.
July 29, 2025	VCYT	Veracyte	TGI	Triumph Group	VCYT replaced TGI after it was acquired by Warburg Pincus and Berkshire Partners.
July 18, 2025	VCTR	Victory Capital	AVAV	AeroVironment	VCTR replaced AVAV, which replaced ChampionX in the S&P 400 after it was acquired by Schlumberger.
July 1, 2025	RAL	Ralliant Corp	WOLF	Wolfspeed	RAL replaced WOLF after it announced its intention to file for bankruptcy and was therefore no longer eligible for continued inclusion in the S&P 600. Fortive completed the corporate spin-off of Ralliant, which remained in the S&P 500.
June 6, 2025	HTO	H2O America	SJW	San Jose Water Group	San Jose Water Group (SJW) rebranded as H2O America (HTO).
April 17, 2025	STRL	Sterling Infrastructure	PDCO	Patterson Companies	STRL replaced PDCO after it was acquired by Patient Square Capital.
April 16, 2025	ACT	Enact Holdings	SWI	SolarWinds	ACT replaced SWI after it was acquired by Turn/River Capital.
April 2, 2025	ANGI	Angi Inc.	ODP	The ODP Corporation	IAC Inc. completed the corporate spin-off of Angi, which replaced ODP which was no longer representative of the small-cap market space.
March 24, 2025	TFX	Teleflex	VFC	VF Corporation	TFX was moved from the S&P 500 as it was more representative of the small cap market space. VFC was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 24, 2025	CE	Celanese	ALK	Alaska Air Group	CE was moved from the S&P 500 as it was more representative of the small cap market space. ALK was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 24, 2025	FMC	FMC Corporation	HIMS	Hims & Hers Health	FMC was moved from the S&P 500 as it was more representative of the small cap market space. HIMS was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 24, 2025	BWA	BorgWarner	AMBC	Ambac Financial Group	BWA was moved from the S&P 500 as it was more representative of the small cap market space. AMBC was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 24, 2025	CC	Chemours	BBWI	Bath & Body Works, Inc.	CC was moved from the S&P 400 as it was more representative of the small cap market space. BBWI was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 24, 2025	TDC	Teradata	ATI	ATI Inc.	TDC was moved from the S&P 400 as it was more representative of the small cap market space. ATI was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 24, 2025	NEOG	Neogen	SATS	EchoStar	NEOG was moved from the S&P 400 as it was more representative of the small cap market space. SATS was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 24, 2025	RHP	Ryman Hospitality Properties	WNC	Wabash National	RHP replaced WNC as it was no longer representative of the small-cap market space.
March 24, 2025	ESI	Element Solutions	GDOT	Green Dot Corporation	ESI replaced GDOT as it was no longer representative of the small-cap market space.
March 24, 2025	FRPT	Freshpet	FLGT	Fulgent Genetics	FRPT replaced FLGT as it was no longer representative of the small-cap market space.
March 24, 2025	WSC	WillScot Holdings Corp.	NBR	Nabors Industries	WSC replaced NBR as it was no longer representative of the small-cap market space.
March 24, 2025	MWA	Mueller Water Products	GPRE	Green Plains Inc.	MWA replaced GPRE as it was no longer representative of the small-cap market space.
March 24, 2025	KTOS	Kratos Defense & Security Solutions	MATV	Mativ Holdings	KTOS replaced MATV as it was no longer representative of the small-cap market space.
March 24, 2025	CLSK	CleanSpark	HAIN	Hain Celestial Group	CLSK replaced HAIN as it was no longer representative of the small-cap market space.
February 25, 2025	SNDK	SanDisk	LESL	Leslie's	Western Digital completed the corporate spin-off of Sandisk, which replaced LESL which was no longer representative of the small-cap market space.
February 19, 2025	KAI	Kadant	NARI	Inari Medical	KAI replaced NARI after it was acquired by Stryker Corporation.
February 13, 2025	GOLF	Acushnet Company	ROIC	Retail Opportunity Investments	GOLF replaced ROIC after it was acquired by Blackstone Inc.
February 10, 2025	MRP	Millrose Properties	IRWD	Ironwood Pharmaceuticals	Lennar completed the corporate spin-off of Millrose, which replaced IRWD which was no longer representative of the small-cap market space.
January 27, 2025	ARWR	Arrowhead Pharmaceuticals	B	Barnes Group	B was acquired by Apollo Global Management. ARWR was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
January 14, 2025	ENOV	Enovis	ARCH	Arch Resources	ARCH was acquired by Consol Energy. Consol Energy was renamed Core Natural Resources Inc., and its ticker changed to CNR. ENOV was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
January 3, 2025	JBTM	JBT Marel Corporation	JBT	John Bean Technologies Corporation	John Bean Technologies (JBT) acquired Marel and began trading under new symbol JBTM.
January 3, 2025	ACAD	Acadia Pharmaceuticals	IBTX	Independent Bank Group	ACAD replaced IBTX after it was acquired by SouthState Bank.
January 2, 2025	GDYN	Grid Dynamics Holdings	GEAR	Revelyst	GDYN replaced GEAR after it was acquired by Strategic Value Partners.
December 30, 2024	INSW	International Seaways	CNSL	Consolidated Communications	INSW replaced CNSL after it was acquired by British Columbia Investment Management Corporation and Searchlight Capital.
December 23, 2024	QRVO	Qorvo	KELYA	Kelly Services	QRVO was moved from the S&P 500 as it was more representative of the small cap market space. KELYA was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 23, 2024	AMTM	Amentum	SVC	Service Properties Trust	AMTM was moved from the S&P 500 as it was more representative of the small cap market space. SVC was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 23, 2024	VSH	Vishay Intertechnology	CMA	Comerica	VSH was moved from the S&P 400 as it was more representative of the small cap market space. CMA was moved to the S&P 400 as it was more representative of the mid-cap market space.
December 23, 2024	CRI	Carter's	CRS	Carpenter Technology	CRI was moved from the S&P 400 as it was more representative of the small cap market space. CRS was moved to the S&P 400 as it was more representative of the mid-cap market space.
December 23, 2024	TRNO	Terreno Realty	HPP	Hudson Pacific Properties	TRNO replaced HPP as it was no longer representative of the small-cap market space.
December 23, 2024	SKY	Champion Homes	RGNX	REGENXBIO	SKY replaced RGNX as it was no longer representative of the small-cap market space.
November 27, 2024	CON	Concentra Group Holdings	MYE	Myers Industries	CON replaced MYE as it was no longer representative of the small-cap market space.
November 26, 2024	AESI	Atlas Energy Solutions	MLI	Mueller Industries	AESI replaced MLI, which replaced Texas Pacific Land Corporation in the S&P 400 after it was moved to the S&P 500.
November 25, 2024	DFH	Dream Finders Homes	HAYN	Haynes International	DFH replaced HAYN after it was acquired by Acerinox.
November 25, 2024	AZTA	Azenta	ENV	Envestnet	ENV was acquired by Bain Capital. AZTA was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
November 4, 2024	ECG	Everus Construction Group	CLW	Clearwater Paper Corporation	MDU Resources completed the corporate spin-off of Everus. CLW was no longer representative of the small-cap market space.
October 15, 2024	PENG	Penguin Solutions, Inc.	SGH	Smart Global Holdings, Inc.	Smart Global Holdings (SGH) rebranded as Penguin Solutions (PENG).
October 11, 2024	MDU	MDU Resources	CHUY	Chuy's	CHUY was acquired by Darden Restaurants. MDU was moved from the S&P 400 to replace it as it announced its intention to spin-off a company at a later date.
October 9, 2024	HIMS	Hims & Hers Health	VGR	Vector Group	HIMS replaced VGR after it was acquired by JT Group.
October 4, 2024	CRGY	Crescent Energy Company	PRFT	Perficient	CRGY replaced PRFT after it was acquired by EQT AB.
October 1, 2024	CURB	Curbline Properties	CCRN	Cross Country Healthcare	SITE Centers completed the corporate spin-off of Curbline.
October 1, 2024	TMDX	TransMedics Group	ENSG	Ensign Group	TMDX replaced ENSG, which replaced Southwestern Energy in the S&P 400 after it was acquired by Chesapeake Energy.
October 1, 2024	BBWI	Bath & Body Works, Inc.	MOV	Movado	BBWI was moved from the S&P 500 as it was more representative of the small cap market space. MOV was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	ETSY	Etsy	HVT	Havertys	ETSY was moved from the S&P 500 as it was more representative of the small cap market space. HVT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	TGNA	Tegna Inc.	DBI	Designer Brands	TGNA was moved from the S&P 400 as it was more representative of the small cap market space. DBI was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	ZD	Ziff Davis	FN	Fabrinet	ZD was moved from the S&P 400 as it was more representative of the small cap market space. FN was moved to the S&P 400 as it was more representative of the mid-cap market space.
September 23, 2024	MP	MP Materials	CVGW	Calavo Growers, Inc.	MP was moved from the S&P 400 as it was more representative of the small cap market space. CVGW was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	PGNY	Progyny	EHAB	Enhabit	PGNY was moved from the S&P 400 as it was more representative of the small cap market space. EHAB was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	ADNT	Adient	MERC	Mercer International	ADNT was moved from the S&P 400 as it was more representative of the small cap market space. MERC was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	WOLF	Wolfspeed	CMP	Compass Minerals	WOLF was moved from the S&P 400 as it was more representative of the small cap market space. CMP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	HELE	Helen of Troy Limited	DDD	3D Systems Corporation	HELE was moved from the S&P 400 as it was more representative of the small cap market space. DDD was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 23, 2024	ZWS	Zurn Elkay Water Solutions	CHCT	Community Healthcare Trust	ZWS replaced CHCT as it was no longer representative of the small-cap market space.
September 23, 2024	YOU	Clear Secure	VREX	Varex Imaging	YOU replaced VREX as it was no longer representative of the small-cap market space.
September 23, 2024	TGTX	TG Therapeutics	DIN	Dine Brands Global	TGTX replaced DIN as it was no longer representative of the small-cap market space.
September 23, 2024	INSP	Inspire Medical Systems	NUS	Nu Skin Enterprises	INSP replaced NUS as it was no longer representative of the small-cap market space.
September 23, 2024	CSW	CSW Industrials	AMCX	AMC Networks	CSW replaced AMCX as it was no longer representative of the small-cap market space.
September 23, 2024	ADMA	ADMA Biologics	ZEUS	Olympic Steel	ADMA replaced ZEUS as it was no longer representative of the small-cap market space.
September 23, 2024	PI	Impinj	RILY	B. Riley Financial	PI replaced RILY as it was no longer representative of the small-cap market space.
September 6, 2024	INVX	Innovex International, Inc.	DRQ	Dril-Quip, Inc.	Dril-Quip (DRQ) merged with Innovex and began trading under symbol INVX.
August 9, 2024	SWI	SolarWinds	SPWR	SunPower	SWI replaced SPWR after it filed for Chapter 11 bankruptcy and is no longer eligible for continued inclusion in the S&P 600.
July 31, 2024	SNDR	Schneider National	SLCA	U.S. Silica Holdings	SNDR replaced SLCA after it was acquired by Apollo Global Management.
July 26, 2024	QDEL	QuidelOrtho	HIBB	Hibbett Sports	HIBB was acquired by JD Sports. QDEL was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
July 22, 2024	GTES	Gates Corporation	ANF	Abercrombie & Fitch Company	GTES replaced ANF, which replaced Equitrans Midstream in the S&P 400 after it was acquired by EQT Corporation.
July 3, 2024	PTGX	Protagonist Therapeutics	WIRE	Encore Wire Corporation	PTGX replaced WIRE after it was acquired by Prysmian Group.
June 24, 2024	CMA	Comerica	ADTN	ADTRAN	CMA was moved from the S&P 500 as it was more representative of the small cap market space. ADTN was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	RHI	Robert Half	HOUS	Anywhere Real Estate	RHI was moved from the S&P 500 as it was more representative of the small cap market space. HOUS was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	LEG	Leggett & Platt	MEI	Methode Electronics	LEG was moved from the S&P 400 as it was more representative of the small cap market space. MEI was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	HTZ	Hertz	CLDT	Chatham Lodging Trust	HTZ was moved from the S&P 400 as it was more representative of the small cap market space. CLDT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	GO	Grocery Outlet	NFBK	Northfield Bancorp,	GO was moved from the S&P 400 as it was more representative of the small cap market space. NFBK was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	PENN	Penn Entertainment	XPER	Xperi	PENN was moved from the S&P 400 as it was more representative of the small cap market space. XPER was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	IART	Integra Lifesciences	RGP	Resources Connection	IART was moved from the S&P 400 as it was more representative of the small cap market space. RGP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	WERN	Werner Enterprises	ATNI	ATN International	WERN was moved from the S&P 400 as it was more representative of the small cap market space. ATNI was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 24, 2024	KRYS	Krystal Biotech	OSUR	OraSure Technologies	KRYS replaced OSUR as it was no longer representative of the small-cap market space.
June 24, 2024	VIRT	Virtu Financial	MCS	Marcus Corporation	VIRT replaced MCS as it was no longer representative of the small-cap market space.
June 24, 2024	STEP	StepStone Group	TTEC	TTEC Holdings	STEP replaced TTEC as it was no longer representative of the small-cap market space.
June 24, 2024	WHD	Cactus	MED	Medifast	WHD replaced MED as it was no longer representative of the small-cap market space.
June 24, 2024	TDW	Tidewate	CRNC	Cerence	TDW replaced CRNC as it was no longer representative of the small-cap market space.
May 8, 2024	MARA	Marathon Digital	AAON	AAON	MARA replaced AAON, which replaced Vistra Corp in the S&P 400 after it was moved to the S&P 500.
May 7, 2024	DOCN	DigitalOcean	AGTI	Agiliti	DOCN replaced AGTI after it was acquired by Thomas H. Lee Partners.
May 6, 2024	IAC	IAC Inc.	AEL	American Equity Investment Life Holding Co.	IAC replaced AEL after it was acquired by Brookfield Reinsurance.
April 23, 2024	CNS	Cohen & Steers	KAMN	Kaman Corporation	CNS replaced KAMN after it was acquired by Arcline Investment Management.
April 22, 2024	CABO	Cable One	MDC	MDC Holdings	MDC was acquired by Sekisui House. CABO was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
April 3, 2024	VFC	VF Corporation	MODV	ModivCare	VFC was moved from the S&P 500 as it was more representative of the small cap market space. MODV was removed from the S&P 600 as it was no longer representative of the small-cap market space.
April 3, 2024	FOXF	Fox Factory	SSP	E. W. Scripps Company	FOXF was moved from the S&P 400 as it was more representative of the small cap market space. SSP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
April 1, 2024	RUN	Sunrun	PGTI	PGT Innovations	PGTI was acquired by MITER Brands. RUN was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
April 1, 2024	NARI	Inari Medical	CPE	Callon Petroleum	CPE was acquired by APA Corporation. NARI was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
March 18, 2024	CALX	Calix, Inc.	CYTK	Cytokinetics	CALX was moved from the S&P 400 as it was more representative of the small cap market space. CYTK was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 18, 2024	MPW	Medical Properties Trust	AIT	Applied Industrial Technologies	MPW was moved from the S&P 400 as it was more representative of the small cap market space. AIT was moved to the S&P 400 as it was more representative of the mid-cap market space.
March 18, 2024	MGY	Magnolia Oil & Gas	CRMT	Americas Carmart	MGY replaced CRMT as it was no longer representative of the small-cap market space.
March 18, 2024	AL	Air Lease Corporation	TBI	TrueBlue	AL replaced TBI as it was no longer representative of the small-cap market space.
March 18, 2024	BOX	Box, Inc.	FORR	Forrester Research	BOX replaced FORR as it was no longer representative of the small-cap market space.
March 18, 2024	BGC	BGC Group	OIS	Oil States International	BGC replaced OIS as it was no longer representative of the small-cap market space.
March 18, 2024	BL	BlackLine Systems	APPS	Digital Turbine	BL replaced APPS as it was no longer representative of the small-cap market space.
March 18, 2024	ARCH	Arch Resources	CCSI	Consensus Cloud Solutions	ARCH replaced CCSI as it was no longer representative of the small-cap market space.
March 18, 2024	MGEE	MGE Energy	IRBT	iRobot	MGEE replaced IRBT as it was no longer representative of the small-cap market space.
March 4, 2024	CXM	Sprinklr	MDRX	Veradigm	CXM replaced MDRX after it was suspended from the Nasdaq Stock Market due to non-compliance with listing rules and is no longer eligible for continued inclusion in the S&P 600.
January 23, 2024	BTU	Peabody Energy	ELF	e.l.f. Beauty, Inc.	BTU replaced ELF, which replaced Spirit Realty Capital in the S&P 400 after it was acquired by Realty Income.
January 5, 2024	PDCO	Patterson Companies	CHS	Chico's FAS	CHS was acquired by Sycamore Partners. PDCO was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
January 2, 2024	SATS	EchoStar	DISH	Dish Network	SATS replaced DISH after it acquired the company.
January 2, 2024	VYX	NCR Voyix	LTHM	Livent Corp.	LTHM was merged with Allkem.
January 2, 2024	RUSHA	Rush Enterprises	RPT	RPT Realty	RUSHA replaced RPT after it was acquired by Kimco Realty.
December 18, 2023	SEE	Sealed Air	OFIX	Orthofix Medical	SEE was moved from the S&P 500 as it was more representative of the small cap market space. OFIX was moved to the S&P 400 as it was more representative of the mid-cap market space.
December 18, 2023	ALSK	Alaska Air Group	RMBS	Rambus	ALSK was moved from the S&P 500 as it was more representative of the small cap market space. RMBS was moved to the S&P 400 as it was more representative of the mid-cap market space.
December 18, 2023	SEDG	SolarEdge	FIX	Comfort Systems USA	SEDG was moved from the S&P 500 as it was more representative of the small cap market space. FIX was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 18, 2023	MODG	Topgolf Callaway Brands	CLFD	Clearfield	MODG was moved from the S&P 400 as it was more representative of the small cap market space. CLFD was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 18, 2023	VSTS	Vestis	OSPN	OneSpan	VSTS was moved from the S&P 400 as it was more representative of the small cap market space. OSPN was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 18, 2023	ALKS	Alkermes	CYH	Community Health Systems, Inc.	ALKS replaced CYH as it was no longer representative of the small-cap market space.
December 18, 2023	AWI	Armstrong World Industries	IVR	Invesco Mortgage Capital	AWI replaced IVR as it was no longer representative of the small-cap market space.
December 18, 2023	NHC	National Healthcare	CDMO	Avid Bioservices	NHC replaced CDMO as it was no longer representative of the small-cap market space.
December 18, 2023	PJT	PJT Partners	JRVR	James River Group Holdings	PJT replaced JRVR as it was no longer representative of the small-cap market space.
December 4, 2023	WS	Worthington Steel	SNBR	Sleep Number	Worthington Industries completed the corporate spin-off of Worthington Steel. Post spin-off Worthington Industries was renamed Worthington Enterprises.
November 30, 2023	CWEN, CWEN.A	Clearway, Inc.	VRTV	Veritiv	CWEN replaced VRTV after it was acquired by Clayton, Dubilier & Rice.
November 30, 2023	WOR	Worthington Industries	AVTA	Avantax	AVTA was acquired by Aretec Group, Inc. WOR was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
November 30, 2023	ICUI	ICU Medical	PACW	PacWest Bancorp	PACW was acquired by Banc of California. ICUI was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
November 13, 2023	ACIW	ACI Worldwide	NXGN	NextGen Healthcare	NXGN was acquired by Thoma Bravo. ACIW was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
November 10, 2023	AMR	Alpha Metallurgical Resources	AVID	Avid Technology	AMR replaced AVID after it was acquired by Symphony Technology Group.
November 7, 2023	ENV	Envestnet	TWNK	Hostess Brands	TWNK was acquired by The J.M. Smucker Company. ENV was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
October 20, 2023	VICR	Vicor Corporation	CIR	CIRCOR International	CIR was acquired by KKR & Co. Inc. VICR was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
October 18, 2023	OGN	Organon & Co.	ONTO	Onto Innovation	OGN was moved from the S&P 500 as it was more representative of the small cap market space. ONTO was moved to the S&P 400 as it was more representative of the mid-cap market space.
October 18, 2023	NATL	NCR Atleos	ITOS	iTeos Therapeutics	NCR Corporation competed the corporate spin-off of NCR Atleos.
October 3, 2023	KLG	WK Kellogg Co	AVD	American Vanguard Corporation	Kellogg's completed the corporate spin-off of WK Kellogg.
October 3, 2023	KSS	Kohl's	HA	Hawaiian Holdings	KSS was moved from the S&P 400 as it was more representative of the small cap market space. HA was removed from the S&P 600 as it was no longer representative of the small-cap market space.
October 3, 2023	DXC	DXC Technology	EBIX	Ebix	DXC was moved from the S&P 500 as it was more representative of the small cap market space. EBIX was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 29, 2023	HAYW	Hayward Holdings	CIVI	Civitas Resources	HAYW replaced CIVI which replaced Syneos Health in the S&P 400.
September 18, 2023	APLE	Apple Hospitality REIT	CPSI	Computer Programs and Systems	Market capitalization changes.
September 18, 2023	LBRT	Liberty Energy	ZYXI	Zynex	Market capitalization changes.
September 18, 2023	BXMT	Blackstone Mortgage Trust	RMAX	RE/MAX	Market capitalization changes.
September 18, 2023	HASI	Hannon Armstrong	FF	FutureFuel	Market capitalization changes.
September 18, 2023	JBLU	JetBlue	ONL	Orion Office REIT	Market capitalization changes.
September 18, 2023	TRIP	TripAdvisor	VNDA	Vanda Pharmaceuticals	Market capitalization changes.
September 18, 2023	HIW	Highwoods Properties	ANGO	AngioDynamics	Market capitalization changes.
September 18, 2023	XRX	Xerox	OPI	Office Properties Income Trust	Market capitalization changes.
September 18, 2023	ENR	Energizer	EGHT	8x8	Market capitalization changes.
September 18, 2023	CATY	Cathay Bank	CHRS	Coherus Biosciences	Market capitalization changes.
September 18, 2023	SXT	Sensient Technologies	NTGR	Netgear	Market capitalization changes.
September 18, 2023	PZZA	Papa John's	AAN	Aaron's, Inc.	Market capitalization changes.
September 18, 2023	OMCL	Omnicell	TSE	Trinseo	Market capitalization changes.
September 18, 2023	NWL	Newell Brands	UVE	Universal Insurance Holdings	Market capitalization changes.
September 18, 2023	LNC	Lincoln National	QURE	UniQure	Market capitalization changes.
September 1, 2023	JXN	Jackson Financial	NEX	NexTier Oilfield Solutions	JXN replaced NEX after it was acquired by Patterson-UTI.
September 1, 2023	GSHD	Goosehead Insurance	NUVA	NuVasive	GSHD replaced NUVA after it was acquired by Globus Medical.
August 25, 2023	AAP	Advance Auto Parts	EBS	Emergent BioSolutions	AAP was moved from the S&P 500 as it was more representative of the small cap market space. EBS was removed from the S&P 600 as it was no longer representative of the small-cap market space.
August 22, 2023	STAA	Staar Surgical	UBA	Urstadt Biddle Properties	UBA was acquired by Regency Centers. STAA was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
August 21, 2023	MRCY	Mercury Systems	ARNC	Arconic	ARNC was acquired by Apollo Global Management. MRCY was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
August 1, 2023	MSGS	Madison Square Garden Sports	AJRD	Aerojet Rocketdyne	MSGS replaced AJRD after it was acquired by L3Harris.
July 3, 2023	FTRE	Fortrea	SENEA	Seneca Foods	Labcorp completed the corporate spin-off of Fortrea.
July 3, 2023	PHIN	PHINIA	LOCO	El Pollo Loco	BorgWarner completed the corporate spin-off of PHINIA.
June 23, 2023	ABR	Arbor Realty Trust	ROCC	Ranger Oil	ABR replaced ROCC after it was acquired by Baytex Energy.
June 19, 2023	DISH	Dish Network	CUTR	Cutera, Inc.	DISH was moved from the S&P 500 as it was more representative of the small cap market space. CUTR was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	NAVI	Navient	ZUMZ	Zumiez	NAVI was moved from the S&P 400 as it was more representative of the small cap market space. ZUMZ was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	SITM	SiTime	GCO	Genesco	SITM was moved from the S&P 400 as it was more representative of the small cap market space. GCO was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	MAC	Macerich	BOOM	Dynamic Materials Corporation	MAC was moved from the S&P 400 as it was more representative of the small cap market space. BOOM was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	VSCO	Victoria's Secret	GCI	Gannett	VSCO was moved from the S&P 400 as it was more representative of the small cap market space. GCI was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	DEI	Douglas Emmett	LPSN	LivePerson	DEI was moved from the S&P 400 as it was more representative of the small cap market space. LPSN was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	FULT	Fulton Financial Corporation	RYAM	Rayonier Advanced Materials	FULT was moved from the S&P 400 as it was more representative of the small cap market space. RYAM was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	NGVT	Ingevity Corp.	PLCE	The Children's Place	NGVT was moved from the S&P 400 as it was more representative of the small cap market space. PLCE was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	SPWR	SunPower	EGRX	Eagle Pharmaceuticals, Inc.	SPWR was moved from the S&P 400 as it was more representative of the small cap market space. EGRX was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	WLY	John Wiley & Sons	CMTL	Comtech Telecommunications Corp.	WLY was moved from the S&P 400 as it was more representative of the small cap market space. CMTL was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	DAN	Dana Incorporated	PETS	PetMed Express	DAN was moved from the S&P 400 as it was more representative of the small cap market space. PETS was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 19, 2023	UFPT	UFP Technologies	BIG	Big Lots	BIG was removed from the S&P 600 and replaced with UFPT as it was no longer representative of the small-cap market space.
June 19, 2023	SDGR	Schrödinger, Inc.	CARA	Cara Therapeutics	CARA was removed from the S&P 600 and replaced with SDGR as it was no longer representative of the small-cap market space.
June 19, 2023	PECO	Phillips Edison & Company	FARO	FARO Technologies	FARO was removed from the S&P 600 and replaced with PECO as it was no longer representative of the small-cap market space.
June 19, 2023	MC	Moelis & Company	DOUG	Douglas Elliman	DOUG was removed from the S&P 600 and replaced with MC as it was no longer representative of the small-cap market space.
June 19, 2023	CARG	CarGurus	INGN	Inogen	INGN was removed from the S&P 600 and replaced with CARG as it was no longer representative of the small-cap market space.
June 19, 2023	CRC	California Resources Corporation	TG	Tredegar Corporation	TG was removed from the S&P 600 and replaced with CRC as it was no longer representative of the small-cap market space.
June 19, 2023	APAM	Artisan Partners Asset Management	TREE	LendingTree	TREE was removed from the S&P 600 and replaced with APAM as it was no longer representative of the small-cap market space.
June 14, 2023	EXPI	eXp World Holdings	HSKA	Heska Corporation	EXPI replaced HSKA after it was acquired by Mars, Incorporated.
June 14, 2023	PRVA	Privia Health Group	RUTH	Ruth's Hospitality Group	PRVA replaced RUTH after it was acquired by Darden Restaurants.
June 1, 2023	BOH	Bank of Hawaii	HMST	HomeStreet Bank	BOH was moved from the S&P 400 as it was more representative of the small cap market space. HMST was removed from the S&P 600 as it was no longer representative of the small-cap market space.
May 1, 2023	CTKB	Cytek Biosciences	CSII	Cardiovascular Systems	CTKB replaced CSII after it was acquired by Abbott Laboratories.
April 5, 2023	PACW	PacWest Bancorp	NKTR	Nektar Therapeutics	PACW was moved from the S&P 400 as it was more representative of the small cap market space. NKTR was removed from the S&P 600 as it was no longer representative of the small-cap market space.
April 3, 2023	NABL	N-able	STAR	iStar	NABL replaced STAR after it was acquired by Safehold, Inc.
March 22, 2023	CERT	Certara	EXPO	Exponent	CERT replaced EXPO which replaced IAA, Inc. in the S&P 400 after it was acquired by Ritchie Bros. Auctioneers.
March 21, 2023	CVI	CVR Energy	AAWW	Atlas Air Worldwide Holdings	CVI replaced AAWW after it was acquired by Apollo Global Management.
March 20, 2023	LUMN	Lumen Technologies	BBBY	Bed Bath & Beyond	LUMN was moved from the S&P 500 as it was more representative of the small cap market space. BBBY was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	TNDM	Tandem Diabetes Care	ZIMV	ZimVie	TNDM was moved from the S&P 400 as it was more representative of the small cap market space. ZIMV was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	HBI	Hanesbrands	OPRX	OptimizeRx	HBI was moved from the S&P 400 as it was more representative of the small cap market space. OPRX was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	PEB	Pebblebrook Hotel Trust	ILPT	Industrial Logistics Properties Trust	PEB was moved from the S&P 400 as it was more representative of the small cap market space. ILPT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	JBGS	JBG Smith	GPMT	Granite Point Mortgage Trust	JBGS was moved from the S&P 400 as it was more representative of the small cap market space. GPMT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	KMT	Kennametal	PKE	Park Aerospace Corp	KMT was moved from the S&P 400 as it was more representative of the small cap market space. PKE was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	DY	Dycom Industries	HT	Hersha Hospitality Trust	DY was moved from the S&P 400 as it was more representative of the small cap market space. HT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	WAFD	WaFd, Inc.	SRDX	Surmodics	WAFD was moved from the S&P 400 as it was more representative of the small cap market space. SRDX was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	VSAT	Viasat	ORGO	Organogenesis	VSAT was moved from the S&P 400 as it was more representative of the small cap market space. ORGO was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	CBRL	Cracker Barrel	UIS	Unisys	CBRL was moved from the S&P 400 as it was more representative of the small cap market space. UIS was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	SLG	SL Green Realty	PNTG	Pennant Group	SLG was moved from the S&P 400 as it was more representative of the small cap market space. PNTG was removed from the S&P 600 as it was no longer representative of the small-cap market space.
March 20, 2023	RDN	Radian Group	UEIC	Universal Electronics Inc	RDN replaced UEIC which was no longer representative of the small-cap market space.
March 20, 2023	NEX	NexTier Oilfield Solutions	MPAA	Motorcar Parts of America	NEX replaced MPAA which was no longer representative of the small-cap market space.
March 20, 2023	AUB	Atlantic Union Bank	FSP	Franklin Street Properties Corp.	AUB replaced FSB which was no longer representative of the small-cap market space.
March 20, 2023	KW	Kennedy Wilson	WW	WW International	KW replaced WW which was no longer representative of the small-cap market space.
March 1, 2023	VRRM	Verra Mobility	COLB	Columbia Banking System	VRRM replaced COLB which replaced Umpqua Holdings Corporation in the S&P 400. COLB acquired Umpqua Holdings and post-merger, COLB market cap was more representative of the mid-cap market space.
February 23, 2023	OTTR	Otter Tail Corporation	UFPI	UFP Industries	OTTR replaced UFP which replaced LHC Group, Inc. in the S&P 400 after it was acquired by UnitedHealth Group.
February 6, 2023	CRK	Comstock Resources	ADC	Agree Realty Corp.	CRK replaced ADC which replaced Store Capital in the S&P 400 after it was acquired by GIC and Oak Street.
February 2, 2023	NOG	Northern Oil and Gas	SJI	South Jersey Industries	NOG replaced SJI after it was acquired by Infrastructure Investments Fund.
January 31, 2023	DV	DoubleVerify	VIVO	Meridian Bioscience	DV replaced VIVO after it was acquired by SD Biosensor.
January 5, 2023	RXO	RXO	JYNT	The Joint Corp.	RXO was moved from the S&P 400 as it was more representative of the small cap market space. JYNT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 19, 2022	MBC	MasterBrand	CONN	Conn's	Fortune Brands Innovations completed the corporate spin-off of MasterBrand.
December 19, 2022	NUVA	NuVasive	TUP	Tupperware Brands	NUVA was moved from the S&P 400 as it was more representative of the small cap market space. TUP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 19, 2022	SMTC	Semtech	DHC	Diversified Healthcare Trust	SMTC was moved from the S&P 400 as it was more representative of the small cap market space. DHC was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 19, 2022	CWK	Cushman & Wakefield	DBD	Diebold Nixdorf	CWK was moved from the S&P 400 as it was more representative of the small cap market space. DBD was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 19, 2022	SJW	SJW Group	CATO	Cato Corporation	SJW was moved from the S&P 400 as it was more representative of the small cap market space. CATO was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 19, 2022	AGTI	Agiliti	LL	LL Flooring	AGTI was moved from the S&P 400 as it was more representative of the small cap market space. LL was removed from the S&P 600 as it was no longer representative of the small-cap market space.
December 1, 2022	SABR	Sabre Corporation	FBC	Flagstar Bancorp	FBC was acquired by New York Community Bancorp. SABR was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
December 1, 2022	NUS	Nu Skin Enterprises	PBF	PBF Energy	NUS was moved from the S&P 400 as it was more representative of the small cap market space. PBF was removed from the S&P 600 as it was no longer representative of the small-cap market space.
November 2, 2022	BFH	Bread Financial	UFI	Unifi	BFH was moved from the S&P 400 as it was more representative of the small cap market space. UFI was removed from the S&P 600 as it was no longer representative of the small-cap market space.
October 18, 2022	MLKN	MillerKnoll	CVET	Covetrus	CVET was acquired by Clayton, Dubilier & Rice. MLKN was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
October 12, 2022	PAYO	Payoneer	LNTH	Lantheus Holdings	PAYO replaced LNTH which replaced Targa Resources in the S&P 400 after it was moved to the S&P 500.
October 3, 2022	HAIN	Hain Celestial Group	HNGR	Hanger, Inc.	HNGR was acquired by Patient Square Capital, LP. HAIN was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
October 3, 2022	MCW	Mister Car Wash	EXLS	EXL Service Holdings	MCW replaced EXLS which replaced EQT Corp. in the S&P 400 after it was moved to the S&P 500.
October 3, 2022	XPER	Xperi	SLQT	SelectQuote	Xperi Holding Corporation completed the corporate spin-off of Xperi Incorporated. Post spin off both companies remained in the S&P 600 but Xperi Holding Corporation was renamed to Adeia Incorporated (Nasdaq: ADEA). SLQT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
October 3, 2022	STEL	Stellar Bancorp	ABTX	Allegiance Bancshares	ABTX was acquired by CBTX, Inc. and post merger the combined company changed its name and ticker symbol to Stellar Bancorp (Nasdaq: STEL).
September 28, 2022	LESL	Leslie's	GCP	GCP Applied Technologies	LESL replaced GCP after it was acquired by Compagnie de Saint-Gobain S.A.
September 19, 2022	HPP	Hudson Pacific Properties	APEI	American Public Education	HPP was moved from the S&P 400 as it was more representative of the small cap market space. APEI was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 19, 2022	MCY	Mercury General	EHTH	eHealth	MCY was moved from the S&P 400 as it was more representative of the small cap market space. EHTH was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 19, 2022	AEO	American Eagle Outfitters	CAMP	CalAmp	AEO was moved from the S&P 400 as it was more representative of the small cap market space. CAMP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 19, 2022	MTX	Minerals Technology	GLT	Glatfelter	MTX was moved from the S&P 400 as it was more representative of the small cap market space. GLT was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 19, 2022	OUT	Outfront Media	FOSL	Fossil Group	OUT was moved from the S&P 400 as it was more representative of the small cap market space. FOSL was removed from the S&P 600 as it was no longer representative of the small-cap market space.
September 15, 2022	CPRX	Catalyst Pharmaceuticals	MANT	ManTech International	CPRX replaced MANT after it was acquired by The Carlyle Group.
September 1, 2022	AVID	Avid Technology	POLY	Plantronics	AVID replaced POLY after it was acquired by HP Inc.
August 10, 2022	CLFD	Clearfield	CELH	Celsius Holdings	CLFD replaced CELH which replaced American Campus Communities in the S&P 400 after it was acquired by Blackstone Inc.
August 4, 2022	AHCO	AdaptHealth	MTOR	Meritor	AHCO replaced MTOR after it was acquired by Cummins.
July 26, 2022	SIX	Six Flags	NTUS	Natus Medical	NTUS was acquired by Archimed. SIX was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
July 21, 2022	SHO	Sunstone Hotel Investors	VG	Vonage	SHO replaced VG after it was acquired by Ericsson.
July 20, 2022	GRBK	Green Brick Partners	COKE	Coca-Cola Bottling Co. Consolidated	GRBK replaced COKE which replaced PS Business Parks in the S&P 400 after it was acquired by Blackstone Inc.
July 6, 2022	FTDR	Frontdoor, Inc.	SWN	Southwestern Energy	FTDR replaced SWN which replaced CDK Global in the S&P 400 after it was acquired by Brookfield Business Partners.
July 5, 2022	LRN	Stride, Inc.	OMCL	Omnicell	LRN replaced OMCL which replaced Coherent, Inc. in the S&P 400 after it was acquired by II-VI Incorporated.
July 5, 2022	EHAB	Enhabit, Inc.	LYLT	Loyalty Ventures	Encompass Health completed the corporate spin-off of Enhabit.
July 5, 2022	SNCY	Sun Country Airlines	NP	Neenah, Inc.	SNCY replaced NP after it was acquired by Schweitzer- Mauduit International, Inc.
June 29, 2022	APPS	Digital Turbine	TVTY	Tivity Health	TVTY was acquired by Stone Point Capital LLC. APPS was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
June 21, 2022	TRN	Trinity Industries	ENDP	Endo International	TRN was moved from the S&P 400 as it was more representative of the small cap market space. ENDP was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 21, 2022	YELP	Yelp	RRGB	Red Robin	YELP was moved from the S&P 400 as it was more representative of the small cap market space. RRGB was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 21, 2022	URBN	Urban Outfitters	TCMD	Tactile Systems Technology	URBN was moved from the S&P 400 as it was more representative of the small cap market space. TCMD was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 21, 2022	RAMP	LiveRamp	VRA	Vera Bradley	RAMP was moved from the S&P 400 as it was more representative of the small cap market space. VRA was removed from the S&P 600 as it was no longer representative of the small-cap market space.
June 21, 2022	IRWD	Ironwood Pharmaceuticals	GHL	Greenhill & Co.	IRWD replaced GHL which was no longer representative of the small-cap market space.
June 16, 2022	EYE	National Vision Holdings	REGI	Renewable Energy Group	EYE replaced REGI after it was acquired by Chevron Corporation.
May 19, 2022	AOSL	Alpha and Omega Semiconductor	IRT	Independence Realty Trust	AOSL replaced IRT which replaced Mimecast in the S&P 400 after it was acquired by Permira.
May 17, 2022	DVAX	Dynavax Technologies	EPAY	Bottomline Technologies	DVAX replaced EPAY after it was acquired by Thoma Bravo.
May 3, 2022	TPH	Tri Pointe Homes	ECOL	US Ecology	ECOL was acquired by Republic Services. TPH was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
April 26, 2022	ATEN	A10 Networks	FOE	Ferro Corporation	ATEN replaced FOE after it was acquired by Prince International Corp., a portfolio company of American Securities.
April 8, 2022	GOGO	Gogo, Inc.	FLOW	SPX FLOW, Inc.	GOGO replaced FLOW after it was acquired by Lone Star Funds.
April 7, 2022	RCUS	Arcus Biosciences	ISBC	Investors Bancorp, Inc.	RCUS replaced ISBC after it was acquired by Citizens Financial Group.
April 6, 2022	PRG	PROG Holdings	FRGI	Fiesta Restaurant Group	PRG was moved from the S&P 400 to replace FRGI which was no longer representative of the small-cap market space.
April 4, 2022	VIR	Vir Biotechnology	MTDR	Matador Resources	VIR replaced MTDR which replaced Camden Property Trust in the S&P 400 after it was moved to the S&P 500.
April 4, 2022	EMBC	Embecta Corp.	BNED	Barnes & Noble Education, Inc.	Becton, Dickinson and Company completed the corporate spin-off of Embecta.
March 30, 2022	SONO	Sonos	GTLS	Chart Industries	SONO replaced GTLS which replaced CyrusOne in the S&P 400 after it was acquired by Kohlberg Kravis Roberts and Global Infrastructure Partners.
March 16, 2022	ASO	Academy Sports + Outdoors	KRA	Kraton	ASO replaced KRA after it was acquired by DL Chemical.
March 14, 2022	CRNC	Cerence	CPS	Cooper-Standard Holdings, Inc.	CRNC was moved from the S&P 400 to replace CPS which was no longer representative of the small-cap market space.
March 2, 2022	GDEN	Golden Entertainment	RRC	Range Resources	GDEN replaced RRC which replaced Molina Healthcare in the S&P 400 after it was moved to the S&P 500.
March 2, 2022	ZIMV	ZimVie	TRHC	Tabula Rasa HealthCare	Zimmer Biomet completed the corporate spin-off of ZimVie.
February 18, 2022	UE	Urban Edge Properties	ONB	Old National Bancorp	UE moved down from the S&P 400 and swapped places with ONB which moved up. ONB acquired First Midwest Bancorp and post-merger, ONB was more representative of the mid-cap market space. UE is more representative of the small-cap market space.
February 18, 2022	CRSR	Corsair Gaming	FMBI	First Midwest Bancorp	CRSR replaced FMBI after it was acquired by Old National Bancorp.
February 15, 2022	XPEL	XPEL, Inc.	PDCE	PDC Energy, Inc.	XPEL replaced PDCE which replaced Nordson Corporation in the S&P 400 after it was moved to the S&P 500.
February 3, 2022	JACK	Jack in the Box	SPPI	Spectrum Pharmaceuticals	JACK was moved from the S&P 400 to replace SPPI which was no longer representative of the small-cap market space.
February 1, 2022	CMP	Compass Minerals	GWB	Great Western Bancorp, Inc.	GWB was acquired by First Interstate BancSystem. CMP was moved from the S&P 400 to replace it as it was more representative of the small-cap market space.
February 1, 2022	TWNK	Hostess Brands	WTS	Watts Water Technologies	TWNK replaced WTS which replaced Sterling Bancorp in the S&P 400 after it was acquired by Webster Bank.
January 5, 2022	ITOS	iTeos Therapeutics	MGLN	Magellan Health	ITOS replaced MGLN after it was acquired by Centene Corporation.
December 30, 2021	DOUG	Douglas Elliman	MTRX	Matrix Service Company	Vector Group completed the corporate spin-off of Douglas Elliman. Post spin-off, Vector Group remained in the S&P 600.
December 20, 2021	TR	Tootsie Roll Industries	M	Macy's, Inc.	TR moved down from the S&P 400 and swapped places with M which moved up.
December 20, 2021	TDS	Telephone and Data Systems	VICR	Vicor Corporation	TDS moved down from the S&P 400 and swapped places with VICR which moved up.
December 20, 2021	NKTR	Nektar Therapeutics	POWI	Power Integrations	NKTR moved down from the S&P 400 and swapped places with POWI which moved up.
December 2, 2021	KAR	KAR Auction Services	MDP	Meredith Corporation	MDP was acquired in a two-step transaction by Gray Television and Dotdash. KAR was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
December 2, 2021	CARS	Cars.com	DSPG	DSP Group	CARS replaced DSPG after it was acquired by Synaptics
December 2, 2021	NVEE	NV5 Global	RAVN	Raven Industries	NVEE replaced RAVN after it was acquired by CNH Industrial.
November 30, 2021	EBS	Emergent BioSolutions	UFS	Domtar	UFS was acquired by Paper Excellence. EBS was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
November 24, 2021	THRY	Thryv	ECHO	Echo Global Logistics	THRY replaced ECHO after it was acquired by The Jordan Company.
November 16, 2021	ONL	Orion Office REIT	DAKT	Daktronics, Inc.	Realty Income completed the corporate spin-off of Orion Office.
November 9, 2021	LYLT	Loyalty Ventures	AAOI	Applied Optoelectronics	Alliance Data completed the corporate spin-off of Loyalty Ventures.
November 5, 2021	NTCT	NetScout Systems	IVC	Invacare Corporation	NTCT moved down from the S&P 400 and replaced IVC which was no longer representative of the small-cap market space.
October 29, 2021	CDMO	Avid Biosciences	CADE	Cadence Bank	CDMO replaced CADE after it was acquired by BancorpSouth.
October 22, 2021	HRMY	Harmony Biosciences	RPAI	Retail Properties of America	HRMY replaced RPAI after it was acquired by Kite Realty Group Trust.
October 22, 2021	TREE	LendingTree	KRG	Kite Realty Group Trust	TREE moved down from the S&P 400 and swapped places with KRG which moved up. TREE has a market capitalization that is more representative of the small-cap market space.
October 19, 2021	FBRT	Franklin BSP Realty Trust, Inc.	CMO	Capstead Mortgage Corporation	Merger.
October 11, 2021	CCSI	Consensus Cloud Solutions	RGS	Regis Corporation	J2 Global completed the corporate spin-off of Consensus Cloud. J2 Global changed its name to Ziff Davis
October 4, 2021	OPRX	OptimizeRx Corp.	LDL	Lydall, Inc.	OPRX replaced LDL after it was acquired by Clearlake Capital.
October 4, 2021	SLVM	Sylvamo	STMP	Stamps.com	International Paper completed the corporate spin-off of Sylvamo. STMP was acquired by Thoma Bravo.
September 20, 2021	WW	WW International	TISI	Team, Inc	Market capitalization changes.
September 20, 2021	HCSG	Healthcare Services Group, Inc.	MSTR	MicroStrategy	HCSG moved down from the S&P 400 and replaced MSTR which was no longer representative of the small-cap market space.
September 20, 2021	QURE	uniQure N.V.	UIHC	United Insurance Holdings Corp.	QURE replaced UIHC which was no longer representative of the small-cap market space.
September 7, 2021	LGND	Ligand Pharmaceuticals	CBB	Cincinnati Bell	CBB was acquired by Macquarie Infrastructure and Real Assets. LGND was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
September 3, 2021	THS	TreeHouse Foods	CORE	Core-Mark Holding Company, Inc.	CORE was acquired by Performance Food Group. THS was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
August 30, 2021	BLFS	BioLife Solutions	SAIA	Saia	BLFS replaced SAIA which replaced Bio-Techne in the S&P 400 after it was moved to the S&P 500.
August 30, 2021	CNK	Cinemark Holdings	USCR	U.S. Concrete	USCR was acquired by Vulcan Materials Company. CNK was moved from the S&P 400 to replace it as it was more representative of the small-cap market space.
August 30, 2021	TRMK	Trustmark Corp.	SYKE	Sykes Enterprises	SYKE was acquired by Sitel. TRMK was moved from the S&P 400 to replace it as it was more representative of the small-cap market space.
August 4, 2021	LKFN	Lakeland Financial Corp.	GME	GameStop Corp.	LKFN replaced GME which replaced Weingarten Realty in the S&P 400 after it was acquired by Kimco Realty.
August 4, 2021	INT	World Fuel Services	SPOK	Spok Holdings, Inc.	INT moved down from the S&P 400 and replaced SPOK which was no longer representative of the small-cap market space.
August 3, 2021	STRA	Strategic Education, Inc.	BELFB	Bel Fuse, Inc.	STRA moved down from the S&P 400 and replaced BELFB which was no longer representative of the small-cap market space.
July 15, 2021	MSEX	Middlesex Water Company	LMNX	Luminex Corporation	MSEX replaced LMNX after it was acquired by DiaSorin.
July 7, 2021	ATGE	Adtalem Global Education	BPFH	Boston Private Financial Holdings	ATGE moved down from the S&P 400 and replaced BPFH which was acquired by SVB Financial Group.
June 22, 2021	TWO	Two Harbors Investment Corp.	CATM	Cardtronics	TWO replaced CATM after it was acquired by NCR Corporation.
June 15, 2021	AMEH	Apollo Medical Holdings, Inc.	ELY	Callaway Golf Company	AMEH replaced ELY which replaced Grubhub in the S&P 400 after it was acquired by Just Eat Takeaway.
June 10, 2021	SLQT	SelectQuote, Inc.	CTB	Cooper Tire & Rubber Company	SLQT replaced CTB after it was acquired by Goodyear Tire and Rubber Company.
June 4, 2021	SVC	Service Properties Trust	LCI	Lannett Company	SVC moved down from the S&P 400 and replaced LCI which was no longer representative of the small-cap market space.
June 2, 2021	ORGO	Organogenesis Holdings Inc.	CROX	Crocs, Inc.	ORGO replaced CROX which replaced Cantel Medical Corporation in the S&P 400 after it was acquired by Steris.
May 27, 2021	JYNT	The Joint Corp.	CUB	Cubic Corporation	JYNT replaced CUB after it was acquired by Veritas Capital.
May 17, 2021	AVNS	Avanos Medical	AEGN	Aegion Corp.	AEGN was acquired by New Mountain Capital. AVNS was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
May 14, 2021	EFC	Ellington Financial	NSA	National Storage Affiliates Trust	EFC replaced NSA which replaced Charles River Laboratories in the S&P 400 after it was moved to the S&P 500.
May 7, 2021	TBBK	The Bancorp, Inc.	RCM	R1 RCM	TBBK replaced RCM which replaced Perspecta Inc. in the S&P 400 after it was acquired by Veritas Capital.
May 3, 2021	GNW	Genworth Financial	GLUU	Glu Mobile	GLUU was acquired by Electronic Arts. GNW was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
May 3, 2021	UTL	Unitil Corporation	WDR	Waddell & Reed	UTL replaced WDR after it was acquired by Macquarie Group.
April 20, 2021	UFS	Domtar	EGOV	NIC Inc.	EGOV was acquired by Tyler Technologies. UFS was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
April 15, 2021	RILY	B. Riley Financial	MIK	The Michaels Companies	RILY replaced MIK after it was acquired by Apollo Global Management.
April 12, 2021	IDCC	InterDigital	CKH	SEACOR Holdings	CKH was acquired by American Industrial Partners. IDCC was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
April 8, 2021	CARA	Cara Therapeutics	MTSC	MTS Systems Corporation	CARA replaced MTSC after it was acquired by Amphenol.
March 30, 2021	OI	O-I Glass	HMSY	HMS Holdings	HMSY was acquired by Veritas Capital. OI was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
March 22, 2021	VCEL	Vericel	QEP	QEP Resources	VCEL replaced QEP after it was acquired by Diamondback Energy.
March 22, 2021	EPC	Edgewell Personal Care	EXTN	Exterran Corporation	EPC moved down from the S&P 400 and replaced EXTN which was no longer representative of the small-cap market space.
March 1, 2021	WSFS	WSFS Financial	CLF	Cleveland-Cliffs	WSFS replaced CLF which replaced Eaton Vance in the S&P 400 after it was acquired by Morgan Stanley.
February 16, 2021	HNI	HNI Corporation	VRTU	Virtusa Corporation	VRTU was acquired by Baring Private Equity Asia. HNI was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
February 12, 2021	COLL	Collegium Pharmaceutical	IRDM	Iridium Communications	COLL replaced IRDM which replaced Monolithic Power Systems in the S&P 400 after it was moved to the S&P 500.
February 10, 2021	ISBC	Investors Bancorp, Inc.	BEAT	BioTelemetry, Inc.	ISBC replaced BEAT after it was acquired by multinational comglomerate Koninklijke Philips N.V.
January 29, 2021	PBH	Prestige Consumer Healthcare	FBM	Foundation Building Materials, Inc.	FBM was acquired by American Securities. PBH was moved from the S&P 400 to replace it as it was more representative of the small cap market space.
January 21, 2021	HTH	Hilltop Holdings Inc.	YETI	Yeti Holdings	HTH replaced YETI which replaced Trimble Inc. in the S&P 400 after it was moved to the S&P 500.
January 7, 2021	CELH	Celsius Holdings	CPRI	Capri Holdings	CELH replaced CPRI which replaced Enphase Energy in the S&P 400 after it was moved to the S&P 500.
January 7, 2021	ELF	e.l.f. Beauty, Inc.	BRKS	Brooks Automation	ELF replaced BRKS which replaced WPX Energy in the S&P 400 after it was acquired by Devon Energy.
December 29, 2020	SMPL	The Simply Good Foods Co.	KNSL	Kinsale Capital Group	SMPL replaced KNSL which replaced Taubman Centers in the S&P 400 after it was acquired by Simon Property Group.
December 2, 2020	AMCX	AMC Networks	RRD	R.R. Donnelley & Sons	AMCX moved down from the S&P 400 and replaced RRD which was no longer representative of the small-cap market space.
December 2, 2020	AAN	Aaron's, Inc.	GEOS	Geospace Technologies	Aaron's Holding Company, Inc. completed the corporate spin-off of Aaron’s.
November 13, 2020	FBNC	First Bancorp	AMAG	AMAG Pharmaceuticals	FBNC replaced AMAG after it was acquired by Covis Group.
November 13, 2020	GEO	GEO Group	GPOR	Gulfport Energy	GEO moved down from the S&P 400 and replaced GPOR which was no longer representative of the small-cap market space.
November 13, 2020	MD	Mednax	WPG	Washington Prime Group	MD moved down from the S&P 400 and replaced WPG which was no longer representative of the small-cap market space.
October 7, 2020	CFFN	Capitol Federal Savings Bank	NEOG	Neogen	CFFN replaced NEOG which replaced Pool Corp. in the S&P 400 after it was moved to the S&P 500.
October 7, 2020	AGO	Assured Guaranty	SSD	Simpson Manufacturing Company	AGO replaced SSD which replaced Delphi Technologies in the S&P 400 after it was acquired by BorgWarner.
October 7, 2020	RNST	Renasant Corp.	NR	Newpark Resources	RNST replaced NR which was no longer representative of the small-cap market space.
October 5, 2020	SBH	Sally Beauty Holdings	OAS	Oasis Petroleum	SBH moved down from the S&P 400 and replaced OAS which was no longer representative of the small-cap market space.
October 1, 2020	CPK	Chesapeake Utilities	MNTA	Momenta Pharmaceuticals	CPK replaced MNTA after it was acquired by Johnson & Johnson.
September 25, 2020	FLGT	Fulgent Genetics	GTX	Garrett Motion	FLGT replaced GTX which was no longer representative of the small-cap market space.
September 21, 2020	PBF	PBF Energy	WING	Wingstop	WING was moved from the S&P 600 to the S&P 400 replacing PBF which was moved from the S&P 400 to the S&P 600 based on market cap changes.
September 21, 2020	ATI	Allegheny Technologies	MEDP	Medpace	MEDP was moved from the S&P 600 to the S&P 400 replacing ATI which was moved from the S&P 400 to the S&P 600 based on market cap changes.
September 21, 2020	CLI	Mack-Cali Realty Corp.	FOXF	Fox Factory Holding Corp.	FOXF was moved from the S&P 600 to the S&P 400 replacing CLI which was moved from the S&P 400 to the S&P 600 based on market cap changes.
September 21, 2020	COOP	Mr. Cooper	EXPR	Express, Inc.	COOP replaced EXPR which was no longer representative of the small-cap market space.
September 21, 2020	RCM	R1 RCM	PEI	PREIT	RCM replaced PEI which was no longer representative of the small-cap market space.
September 1, 2020	BKU	BankUnited	LAD	Lithia Motors	BKU replaced LAD which replaced LogMeIn in the S&P 400 after it was acquired by Francisco Partners and Elliott Management Corporation.
September 1, 2020	TRUP	Trupanion	REI	Ring Energy	TRUP replaced REI which was no longer representative of the small-cap market space.
August 17, 2020	FBK	FB Financial	FSB	Franklin Financial Network	FBK replaced FSB as Franklin Financial Network was acquired by FB Financial
August 17, 2020	CXW	CoreCivic	VAL	Valaris	CXW replaced VAL which was no longer representative of the small-cap market space.
August 3, 2020	BANF	BancFirst	RUN	Sunrun	BANF replaced RUN which was no longer representative of the small-cap market space.
August 3, 2020	DLX	Deluxe Corporation	EE	El Paso Electric	DLX replaced EE as El Paso Electric was acquired.
August 3, 2020	CRS	Carpenter Technology	CDR	Cedar Realty Trust	CRS replaced CDR which was no longer representative of the small-cap market space.
July 24, 2020	FHB	First Hawaiian Bank	EBS	Emergent BioSolutions	FHB replaced EBS which was no longer representative of the small-cap market space.
June 30, 2020	RPAI	Retail Properties of America Inc.	BLD	TopBuild	RPAI replaced BLD which was no longer representative of the small-cap market space.
June 30, 2020	BDN	Brandywine Realty Trust	BGG	Briggs & Stratton	BDN replaced BGG which was no longer representative of the small-cap market space.
June 25, 2020	EAT	Brinker International	AXE	Anixter	EAT replaced AXE as Anixter International was acquired by WESCO International.
June 22, 2020	DNOW	NOW Inc.	TLRD	Tailored Brands	DNOW replaced TLRD which was no longer representative of the small-cap market space.
June 22, 2020	CAKE	Cheesecake Factory	CBL	CBL & Associates Properties	CAKE replaced CBL which was no longer representative of the small-cap market space.
June 22, 2020	REZI	Resideo Technologies	HPR	HighPoint Resources	REZI replaced HPR which was no longer representative of the small-cap market space.
June 22, 2020	BSIG	BrightSphere Investment Group	TTI	TETRA Technologies	BSIG replaced TTI which was no longer representative of the small-cap market space.
June 22, 2020	BBBY	Bed Bath & Beyond	STRA	Strategic Education, Inc.	BBBY replaced STRA which was no longer representative of the small-cap market space.
June 22, 2020	MTDR	Matador Resources	QLYS	Qualys	MTDR replaced QLYS which was no longer representative of the small-cap market space.
June 22, 2020	MDRX	Allscripts Healthcare Solutions	GBCI	Glacier Bancorp	MDRX replaced GBCI which was no longer representative of the small-cap market space.
June 1, 2020	DHC	Diversified Healthcare Trust	FG	FGL Holdings	DHC replaced FG as FGL Holdings was acquired by Fidelity National Financial.
June 1, 2020	SLP	Simulations Plus	TIVO	TiVo Inc.	SLP replaced TIVO as TiVo Inc. was acquired by Xperi.
June 1, 2020	PLMR	Palomar Holdings	LXU	LSB Industries	PLMR replaced LXU which was no longer representative of the small-cap market space.
June 1, 2020	CHRS	Coherus Biosciences	OPB	Opus Bank	CHRS replaced OPB as Opus Bank was acquired by Pacific Premier Bancorp.
June 1, 2020	PTEN	Patterson-UTI Energy	NE	Noble Corporation	PTEN replaced NE which was no longer representative of the small-cap market space.
May 22, 2020	HP	Helmerich & Payne	JCP	JCPenney	HP replaced JCP which filed for Chapter 11 bankruptcy.
May 12, 2020	CPRI	Capri Holdings	ACOR	Acorda Therapeutics	CPRI replaced ACOR which was no longer representative of the small-cap market space.
May 1, 2020	CLB	Core Laboratories	AKRX	Akorn	CLB replaced AKRX which filed for Chapter 11 bankruptcy.
May 1, 2020	MDP	Meredith Corporation	DO	Diamond Offshore Drilling	MDP replaced DO which filed for Chapter 11 bankruptcy.
April 17, 2020	YETI	YETI Holdings	LHCG	LHC Group	YETI replaced LHCG which was no longer representative of the small-cap market space.
February 13, 2020	ALEX	Alexander & Baldwin	DPLO	Diplomat Pharmacy	ALEX replaced DPLO as Diplomat Pharmacy was acquired by UnitedHealth Group.
February 13, 2020	CRMT	America's Car-Mart	CRCM	Care.com	CRMT replaced CRCM as Care.com was acquired by IAC.
February 6, 2020	GDOT	Green Dot Corporation	WLH	William Lyon Homes	GDOT replaced WLH as William Lyon Homes was acquired by Taylor Morrison.
February 4, 2020	RUN	Sunrun	DAR	Darling Ingredients	RUN replaced DAR which was no longer representative of the small-cap market space.
January 27, 2020	SKT	Tanger Factory Outlet Centers	MDR	McDermott International	SKT replaced MDR which filed for Chapter 11 bankruptcy.
January 2, 2020	FBM	Foundation Building Materials	RH	RH	FBM replaced RH which was no longer representative of the small-cap market space.
December 23, 2019	UNIT	Uniti Group	CRZO	Carrizo Oil & Gas	UNIT replaced CRZO as Carrizo Oil & Gas was acquired by Callon Petroleum Company.
December 23, 2019	OAS	Oasis Petroleum	UNIT	Unit Corp	OAS replaced UNIT which was no longer representative of the small-cap market space.
December 23, 2019	SWN	Southwestern Energy	FTR	Frontier Communications	SWN replaced FTR which was no longer representative of the small-cap market space.
December 17, 2019	PLT	Plantronics	VSI	Vitamin Shoppe	PLT replaced VSI as Vitamin Shoppe was acquired by Franchise Group.

See also

• List of S&P 600 companies