The stock market on August 21, 1975
August 21, 1975, a Thursday. The S&P 500 fell 0.18% to close at 83.07. Of 4,620 US stocks that traded, 863 rose and 1,551 fell.
The S&P 500-0.18%closed at 83.07
How big a move#19,606of 24,799 trading days since 1928
$100 in the index since$9,274price only, to September 24, 2026
Stocks that rose863of 4,620; 1,551 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| American Express (AXP) | +9.0% |
| Mesa Inc (MXP.) | +6.4% |
| Aetna (AET) | +6.2% |
Biggest falls among the 500 largest companies
| Hewlett-Packard (HWP) | -6.7% |
| Clark Equipment (CKL) | -6.4% |
| American Airlines Group (AMR) | -6.3% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 20, 1975 · Every August 21 · August 22, 1975 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.