The stock market on September 11, 1985
September 11, 1985, a Wednesday. The S&P 500 fell 1.00% to close at 185.03. Of 5,714 US stocks that traded, 895 rose and 2,626 fell.
The S&P 500-1.00%closed at 185.03
How big a move#6,036of 24,799 trading days since 1928
$100 in the index since$4,164price only, to September 24, 2026
Stocks that rose895of 5,714; 2,626 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for4stocks
Biggest rises among the 500 largest companies
| Noram Energy Corp | +6.6% |
| Lowe's (LOW) | +2.9% |
| Sunoco (SUN) | +2.3% |
Biggest falls among the 500 largest companies
| Liz Claiborne (LIZ) | -5.5% |
| Sonat Inc. (SNT) | -5.2% |
| Cabot Corporation (CBT) | -5.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 10, 1985 · Every September 11 · September 12, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.