503 S&P 500 companies, with news and analysis for each. Additions and removals ↓
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Every change to the S&P 500 since 2015, newest first and grouped by year. Changes take effect before the open on the date shown. Source: S&P Dow Jones Indices announcements, via Wikipedia.
Market capitalization changes.
Equity Residential (now Vivmark Residential) acquired AvalonBay Communities.
An investor consortium comprising Saudi Arabia's Public Investment Fund (PIF), Silver Lake, and Affinity Partners acquired Electronic Arts.
Market capitalization changes.
Honeywell completed the corporate spin-off of Honeywell Aerospace.
Market capitalization changes.
Market capitalization changes.
FedEx Corp. completed the corporate spin-off of FedEx Freight Holding.
Market capitalization changes.
Market capitalization changes.
Market capitalization changes.
Dupont completed the corporate spin-off of Qnity Electronics.
Market capitalization changes.
Honeywell International completed the corporate spin-off of Solstice Advanced Materials.
Market capitalization changes.
Sycamore Partners acquired Walgreen Boots Alliance.
Hewlett Packard Enterprise acquired Juniper Networks.
Market capitalization changes.
Market capitalization changes.
Novo Holdings A/S acquired Catalent.
ConocoPhillips acquired Marathon Oil.
Market capitalization changes.
Jacobs Solutions completed the corporate spin-off of its Critical Mission Solutions and Cyber Intelligence business, which merged with private Amentum to create newly publicly traded Amentum Holdings.
Market capitalization changes.
Market capitalization changes.
Market capitalization changes.
General Electric completed the corporate spin-off of GE Vernova.
3M completed the corporate spin-off of Solventum.
Market capitalization changes.
Ceridian changed its ticker symbol from CDAY to DAY.
Market capitalization changes.
Market capitalization changes.
Acquisition of Activision Blizzard by Microsoft.
Market capitalization changes.
Danaher Corporation completed the corporate spin-off of Veralto.
Market capitalization changes.
Johnson & Johnson offered to exchange the shares of Kenvue held for shares of Johnson & Johnson in a split-off exchange offer.
The Federal Deposit Insurance Corporation (FDIC) placed First Republic Bank into receivership.
The FDIC placed Signature Bank into FDIC Receivership.
The FDIC placed SVB's main subsidiary, Silicon Valley Bank, into receivership.
Market capitalization changes.
General Electric completed the corporate spin-off of GE HealthCare.
Fortune Brands Home & Security completed the corporate spin-off of MasterBrand.
Elliott Investment Management acquired Nielsen Holdings.
Vista Equity Partners acquired Citrix Systems.
Prologis acquired Duke Realty.
Market capitalization changes.
Market capitalization changes.
WarnerMedia and Discovery merged to create Warner Bros. Discovery.
M&T Bank acquired People's United Financial.
S&P Global acquired IHS Markit.
Market capitalization changes.
Exelon completed the corporate spin-off of Constellation Energy.
Willis Towers Watson changed its ticker symbol from WLTW to WTW.
Market capitalization changes.
Canadian Pacific acquired Kansas City Southern.
Market capitalization changes.
Analog Devices acquired Maxim Integrated Products.
Market capitalization changes.
Merck completed the corporate spin-off of Organon.
Teledyne Technologies acquired FLIR Systems.
Siemens Healthineers acquired Varian Medical Systems.
Market capitalization changes.
LVMH Moet Hennessy-Louis Vuitton SE acquired Tiffany & Co.
Chevron acquired Noble Energy.
Fortive completed the corporate spin-off of Vontier.
Market capitalization changes.
Market capitalization changes.
Market capitalization changes.
Allergan was acquired by AbbVie.
Market capitalization changes.
United Technologies corporate spin-off of Otis and Carrier and acquired Raytheon Company.
United Technologies corporate spin-off of Otis and Carrier and acquired Raytheon Company.
United Technologies completed the corporate spin-off of Otis and Carrier and acquired Raytheon Company.
Arconic separated into 2 companies - Howmet remained in the index.
Gardner Denver acquired Ingersoll Rand's industrial businesses then changed its name to the "new" Ingersoll Rand Inc.
Centene acquired Wellcare.
Market capitalization changes.
BB&T acquired SunTrust to form Truist Financial.
SPB completed the corporate spin-off of Jefferies Financial Group.
Occidental Petroleum acquired Anadarko Petroleum.
Market capitalization changes.
L3 was acquired by Harris Corporation.
BMS changed to AMCR post merger with Amcor; subsequently renamed to Amcor.
Merger of Bemis and Amcor; Bemis was the surviving entity.
DWDP changed to DD after spinning off Corteva.
DowDuPont completed the corporate spin-off of Corteva.
DowDuPont completed the corporate spin-off of Dow Inc.
21st Century Fox merged with Disney and some parts spun off as Fox Corporation.
Wabtec acquired GE transportation business
Pacific Gas & Electric Company filed for bankruptcy.
Dominion Energy acquired SCANA.
Cigna acquired Express Scripts.
UTX acquired Rockwell Collins.
CVS acquired Aetna.
Market capitalization changes.
EQT completed the corporate spin-off of ETRN.
XL was acquired by Axa.
AT&T acquired Time Warner.
Market capitalization changes.
Bayer acquired Monsanto.
Westar Energy acquired Great Plains Energy and changed name to Evergy.
Wyndham Worldwide completed the corporate spin-off of Wyndham Hotels & Resorts.
Market capitalization changes.
Discovery Communications acquired Scripps Networks Interactive.
QuintilesIMS changed its name to IQVIA and ticker symbol from Q to IQV.
CenturyLink acquired Level 3 Communications.
The Dow Chemical Company renamed to DowDuPont Inc.
The Dow Chemical Company acquired DuPont.
Amazon acquired Whole Foods Market.
MetLife completed the corporate spin-off of Brighthouse Financial.
Market capitalization changes.
British American Tobacco (NYSE MKT:BTI) acquired Reynolds American.
Baker Hughes merged with GE Oil & Gas to form a new company.
Verizon acquired Yahoo operations; remainder of Yahoo became Altaba.
Market capitalization changes.
Reckitt Benckiser acquired Mead Johnson Nutrition.
TGNA completed the corporate spin-off of Cars.com.
HPE completed the corporate spin-off of Everett, merged with CSC to form DXC Technology.
Market capitalization changes.
Samsung Electronics acquired Harman International Industries.
Analog Devices acquired Linear Technology.
Abbott Laboratories acquired St. Jude Medical.
Market capitalization changes.
Alcoa completed the corporate spin-off off Arconic.
Siris Capital Group acquired Polycom.
AGL Resources was acquired by Southern Company.
TECO Energy was acquired by EMA.
Cablevision Systems was acquired by Altice.
Coca-Cola Enterprises merged with European bottlers.
Airgas was acquired by Air Liquide.
Under Armour distribution of second class of stock.
Schlumberger acquired Cameron.
Exelon acquired Pepco.
Centene acquired Health Net.
Weyerhaeuser acquired Plum Creek Timber.
Willis Holdings merged with Towers Watson and was renamed Willis Towers Watson.
CMCSK shares were no longer listed.
CSC completed the corporate spin-off off CSRA.
GE completed the corporate spin-off of Synchrony Financial.
HPQ completed the corporate spin-off of Hewlett Packard Enterprise.
Share class methodology change.
Pall was acquired.
Spin off of Columbia Pipeline.
Integrys was acquired.
Baxter completed the corporate spin-off of Baxalta.
Lorillard was acquired.
Market capitalization changes.
Allergan was acquired by Actavis (and changed its name to Allergan).
Market capitalization changes.
Safeway was acquired by a private equity consortium.
Covidien was acquired by Medtronic.