The stock market on September 30, 1991
September 30, 1991, a Monday. The S&P 500 rose 0.51% to close at 387.86. Of 5,740 US stocks that traded, 2,127 rose and 1,424 fell.
The S&P 500+0.51%closed at 387.86
How big a move#12,323of 24,799 trading days since 1928
$100 in the index since$1,986price only, to September 24, 2026
Stocks that rose2,127of 5,740; 1,424 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Unocal Exploration Corp (UXC) | +9.3% |
| Homestake Mining (HM) | +5.1% |
| Unocal Corporation (UCL) | +5.1% |
Biggest falls among the 500 largest companies
| Duracell International (DUR) | -4.8% |
| Citizens Commun -ser B Old (CZN) | -4.7% |
| Salomon | -4.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 27, 1991 · Every September 30 · October 1, 1991 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.