S&P 500S&P 500 companies

The S&P 500 tracks 501 US companies. As of 23 Oct 2026 the largest is Nvidia at 7.77% of the index, and the 10 largest make up 39.45%.

Members

500

Weighting

Float-adjusted market cap

Provider

S&P Dow Jones Indices

Review

Quarterly (Mar, Jun, Sep, Dec)

Country

United States

Data as of

23 Oct 2026

Source: iShares Core S&P 500 ETF (IVV) holdings, as of 2026-10-23 (ETF weights, not the provider's). How we source this.

Members

Concentration

The 10 largest members make up 39.45% of the index.

• Nvidia7.77%
• Apple Inc.7.72%
• Microsoft5.93%
• Alphabet Inc.5.15%
• Amazon3.70%
• Broadcom2.33%
• Meta Platforms2.16%
• Tesla, Inc.1.60%
• Lilly (Eli)1.55%
• Berkshire Hathaway1.54%

Which other indexes share members with the S&P 500

Shade shows how many members each index shares with the S&P 500.

Americas

1. S&P Mervalno shared members
2. Ibovespano shared members
3. S&P/TSX Compositeno shared members
4. S&P IPSAno shared members
5. S&P/BMV IPCno shared members
6. S&P 500this index
7. Nasdaq-10085 shared
8. Dow Jones30 shared
9. Russell 2000no shared members
10. Nasdaq Composite154 shared
11. NYSE Composite342 shared

Europe

1. Euro Stoxx 50no shared members
2. ATXno shared members
3. BEL 20no shared members
4. OMX Copenhagen 20no shared members
5. OMX Tallinnno shared members
6. OMX Helsinki 25no shared members
7. CAC 40no shared members
8. DAXno shared members
9. OMX Iceland 15no shared members
10. ISEQ 20no shared members
11. FTSE MIBno shared members
12. OMX Rigano shared members
13. OMX Vilniusno shared members
14. LuxXno shared members
15. AEXno shared members
16. AMXno shared members
17. AMS Next 20no shared members
18. OSEBXno shared members
19. WIG20no shared members
20. PSIno shared members
21. MOEX Russiano shared members
22. IBEX 35no shared members
23. IBEX Medium Capno shared members
24. IBEX Small Capno shared members
25. OMX Stockholm 30no shared members
26. SMIno shared members
27. BIST 100no shared members
28. FTSE 100no shared members

Asia-Pacific

1. S&P/ASX 2005 shared
2. Shanghai Compositeno shared members
3. Hang Sengno shared members
4. Nifty 50no shared members
5. IDX Compositeno shared members
6. Nikkei 225no shared members
7. S&P/NZX 50no shared members
8. KSE 100no shared members
9. Straits Times Indexno shared members
10. KOSPIno shared members
11. VN-Indexno shared members

Middle East & Africa

1. EGX 30no shared members
2. TA-351 shared
3. ASE Generalno shared members
4. QE Indexno shared members
5. TASIno shared members
6. JSE Top 40no shared members
7. ADX Generalno shared members

Fewermore

• NYSE Composite: 342 shared companies
• Nasdaq Composite: 154 shared companies
• Nasdaq-100: 85 shared companies. Compare the two
• Dow Jones: 30 shared companies. Compare the two
• S&P/ASX 200: 5 shared companies
• TA-35: 1 shared company

Related indexes: Nasdaq-100, Dow Jones.

Recent changes

We started recording changes on 26 Oct 2026. None recorded yet.

Questions

How many companies are in the S&P 500?

The S&P 500 has 500 members. We show 501 as of 23 Oct 2026.

What is the largest company in the S&P 500?

Nvidia, at 7.77% of the index as of 23 Oct 2026.

How is the S&P 500 weighted?

Float-adjusted market cap, according to S&P Dow Jones Indices.

When is the S&P 500 reviewed?

Quarterly (Mar, Jun, Sep, Dec).

Which S&P 500 companies are also in the NYSE Composite?

342 of them, as of 23 Oct 2026. The membership map below links the NYSE Composite.

Sources