The stock market on August 21, 1991
August 21, 1991, a Wednesday. The S&P 500 rose 2.94% to close at 390.59. Of 5,734 US stocks that traded, 3,112 rose and 814 fell.
The S&P 500+2.94%closed at 390.59
How big a move#698of 24,799 trading days since 1928
$100 in the index since$1,972price only, to September 24, 2026
Stocks that rose3,112of 5,734; 814 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Lin Broadcasting (LINB) | +9.5% |
| Oracle (ORCL) | +9.3% |
| Ethyl (NEU) | +9.3% |
Biggest falls among the 500 largest companies
| General Dynamics (GD) | -5.6% |
| Homestake Mining (HM) | -3.9% |
| Aetna (AET) | -3.3% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 20, 1991 · Every August 21 · August 22, 1991 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.