S&P 500 · Constituent Changes — A Log of Additions and Deletions
Constituent changes — Who was added and removed, year by year.
The last decade of constituent changes. Each entry captures the rise or decline of a listed company — the mechanism by which the index stays current with the U.S. economy.
What this page answers
238 membership changes are on record. The most recent took effect 2026-08-18: RDDT added, AVB removed. The metabolism of the S&P 500 never stops — holding the index passively means holding a self-refreshing list.
The last decade of constituent changes. Each entry captures the rise or decline of a listed company — the mechanism by which the index stays current with the U.S. economy. The data is refreshed by the History of Market pipeline and published as a stable JSON endpoint for research, citation, and AI-agent use.
The plate
Latest Snapshot
- Updated
- 2026-08-22
- Observations
- 238
S&P 500 — additions and removals
| Effective | Added | Removed |
|---|---|---|
| 2026-08-18 | RDDT (Reddit) | AVB (AvalonBay Communities) |
| 2026-08-05 | FERG (Ferguson Enterprises) | EA (Electronic Arts) |
| 2026-06-30 | — | CAG (Conagra Brands) |
| 2026-06-29 | HONA (Honeywell Aerospace) | — |
| 2026-06-22 | MRVL (Marvell Technology) | POOL (Pool Corporation) |
| 2026-06-22 | FLEX (Flex Ltd.) | CPB (The Campbell's Company) |
| 2026-06-02 | — | EPAM (EPAM Systems) |
| 2026-06-01 | FDXF (FedEx Freight) | — |
| 2026-05-07 | VEEV (Veeva Systems) | CTRA (Coterra Energy) |
| 2026-04-09 | CASY (Casey's) | HOLX (Hologic) |
| 2026-03-23 | VRT (Vertiv) | MTCH (Match Group) |
| 2026-03-23 | LITE (Lumentum) | MOH (Molina Healthcare) |
| 2026-03-23 | COHR (Coherent Corp.) | LW (Lamb Weston) |
| 2026-03-23 | SATS (EchoStar) | PAYC (Paycom) |
| 2026-02-09 | CIEN (Ciena) | DAY (Dayforce) |
| 2025-12-22 | CRH (CRH) | LKQ (LKQ Corporation) |
| 2025-12-22 | CVNA (Carvana) | SOLS (Solstice Advanced Materials) |
| 2025-12-22 | FIX (Comfort Systems USA) | MHK (Mohawk Industries) |
| 2025-12-11 | ARES (Ares Management) | K (Kellanova) |
| 2025-11-28 | SNDK (Sandisk) | IPG (Interpublic Group) |
| 2025-11-04 | — | EMN (Eastman Chemical Co.) |
| 2025-11-03 | Q (Qnity Electronics) | — |
| 2025-10-31 | — | KMX (CarMax) |
| 2025-10-30 | SOLS (Solstice Advanced Materials) | — |
| 2025-09-22 | EME (Emcor) | ENPH (Enphase Energy) |
| 2025-09-22 | HOOD (Robinhood Markets) | CZR (Caesars Entertainment) |
| 2025-09-22 | APP (AppLovin) | MKTX (MarketAxess) |
| 2025-08-28 | IBKR (Interactive Brokers Group) | WBA (Walgreens Boots Alliance) |
| 2025-07-23 | XYZ (Block) | HES (Hess) |
| 2025-07-18 | TTD (The Trade Desk) | ANSS (ANSYS) |
| 2025-07-09 | DDOG (Datadog) | JNPR (Juniper Networks) |
| 2025-05-19 | COIN (Coinbase) | DFS (Discover Financial) |
| 2025-03-24 | DASH (DoorDash) | BWA (BorgWarner) |
| 2025-03-24 | TKO (TKO Group Holdings) | TFX (Teleflex) |
| 2025-03-24 | WSM (Williams-Sonoma, Inc.) | CE (Celanese) |
| 2025-03-24 | EXE (Expand Energy) | FMC (FMC Corporation) |
| 2024-12-23 | APO (Apollo Global Management) | QRVO (Qorvo) |
| 2024-12-23 | WDAY (Workday) | AMTM (Amentum Holdings) |
| 2024-12-23 | LII (Lennox International) | CTLT (Catalent) |
| 2024-11-26 | TPL (Texas Pacific Land Corporation) | MRO (Marathon Oil) |
| 2024-10-01 | — | BBWI (Bath & Body Works, Inc.) |
| 2024-09-30 | AMTM (Amentum) | — |
| 2024-09-23 | PLTR (Palantir Technologies) | AAL (American Airlines Group) |
| 2024-09-23 | DELL (Dell Technologies) | ETSY (Etsy) |
| 2024-09-23 | ERIE (Erie Indemnity) | BIO (Bio-Rad Laboratories) |
| 2024-06-24 | KKR (KKR) | RHI (Robert Half) |
| 2024-06-24 | CRWD (CrowdStrike) | CMA (Comerica) |
| 2024-06-24 | GDDY (GoDaddy) | ILMN (Illumina, Inc.) |
| 2024-05-08 | VST (Vistra) | PXD (Pioneer Natural Resources) |
| 2024-04-03 | — | XRAY (Dentsply Sirona) |
| 2024-04-03 | — | VFC (VF Corporation) |
| 2024-04-02 | GEV (GE Vernova) | — |
| 2024-04-01 | SOLV (Solventum) | — |
| 2024-03-18 | SMCI (Supermicro) | WHR (Whirlpool Corporation) |
| 2024-03-18 | DECK (Deckers Brands) | ZION (Zions Bancorporation) |
| 2023-12-18 | UBER (Uber) | SEE (Sealed Air) |
| 2023-12-18 | JBL (Jabil) | ALK (Alaska Air Group) |
| 2023-12-18 | BLDR (Builders FirstSource) | SEDG (SolarEdge) |
| 2023-10-18 | HUBB (Hubbell) | OGN (Organon & Co.) |
| 2023-10-18 | LULU (Lululemon Athletica) | ATVI (Activision Blizzard) |
Showing the 60 most recent of 238 observations — the full series is in the JSON: https://historyofmarket.com/api/sp500/changes.json
Data & Source
GET /api/sp500/changes.json — Canonical dataset endpoint.
Exchange closing prices · Company filings · Robert Shiller · FRED · NBER.
FAQ
Where does this data come from?
History of Market combines public market and macro datasets — exchange closing prices, company filings, Robert Shiller, FRED, NBER, and the UBS Global Investment Returns Yearbook (Dimson–Marsh–Staunton). The exact endpoint for this panel is linked below.
How often is it updated?
Daily-tier datasets refresh after the U.S. market close, with a broader weekly refresh on Sunday. The timestamp shown on this page comes from the JSON payload.
Can I use the data?
Yes, for research and education with attribution to History of Market. Upstream data sources retain their own terms.