The stock market on September 26, 2025
September 26, 2025, a Friday. The S&P 500 rose 0.59% to close at 6643.70. Of 3,532 US stocks that traded, 2,452 rose and 983 fell.
The S&P 500+0.59%closed at 6643.70
How big a move#10,889of 24,799 trading days since 1928
$100 in the index since$116price only, to September 24, 2026
Stocks that rose2,452of 3,532; 983 fell
Biggest companyNvidiaby market value that day
Biggest rises among the 500 largest companies
| Electronic Arts (EA) | +14.9% |
| Carpenter Technology Corp (CRS) | +7.9% |
| Allegheny Technologies (ATI) | +7.0% |
Biggest falls among the 500 largest companies
| Oklo Inc. (OKLO) | -7.2% |
| Ionq (IONQ) | -3.1% |
| Costco Wholesale Corp (COST) | -2.9% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
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Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.