The stock market on August 21, 2025
August 21, 2025, a Thursday. The S&P 500 fell 0.40% to close at 6370.17. Of 3,532 US stocks that traded, 1,652 rose and 1,762 fell.
The S&P 500-0.40%closed at 6370.17
How big a move#14,355of 24,799 trading days since 1928
$100 in the index since$121price only, to September 24, 2026
Stocks that rose1,652of 3,532; 1,762 fell
Biggest companyNvidiaby market value that day
Biggest rises among the 500 largest companies
| Packaging Corporation of America (PKG) | +6.2% |
| Tempus AI, Inc. (TEM) | +4.7% |
| Hewlett Packard Enterprise (HPE) | +3.7% |
Biggest falls among the 500 largest companies
| First Solar (FSLR) | -7.0% |
| Walmart (WMT) | -4.5% |
| PG&E Corporation (PCG) | -4.5% |
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.