The stock market on August 12, 1991
August 12, 1991, a Monday. The S&P 500 rose 0.23% to close at 388.02. Of 5,723 US stocks that traded, 1,696 rose and 1,807 fell.
The S&P 500+0.23%closed at 388.02
How big a move#18,171of 24,799 trading days since 1928
$100 in the index since$1,985price only, to September 24, 2026
Stocks that rose1,696of 5,723; 1,807 fell
Biggest companyExxon Mobilby market value that day
Biggest rises among the 500 largest companies
| Security Pacific Corp | +39.7% |
| First Interstate Bancorp (I) | +22.1% |
| Chemical Banking Corporation (CMB) | +9.0% |
Biggest falls among the 500 largest companies
| Salomon | -9.0% |
| Unocal Corporation (UCL) | -4.9% |
| Chrysler Corp (C) | -4.2% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 9, 1991 · Every August 12 · August 13, 1991 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.