The stock market on September 9, 1985
September 9, 1985, a Monday. The S&P 500 rose 0.01% to close at 188.25. Of 5,720 US stocks that traded, 1,592 rose and 1,793 fell.
The S&P 500+0.01%closed at 188.25
How big a move#24,403of 24,799 trading days since 1928
$100 in the index since$4,092price only, to September 24, 2026
Stocks that rose1,592of 5,720; 1,793 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Richardson-Vicks Inc (RVI) | +15.3% |
| General Foods Corp | +8.9% |
| Canadian Pacific Enterprises (ENT) | +7.7% |
Biggest falls among the 500 largest companies
| Knight Ridder (KRI) | -3.6% |
| Fluor (FLR) | -3.1% |
| Bausch & Lomb (BOL) | -2.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 6, 1985 · Every September 9 · September 10, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.