The stock market on September 4, 1985
September 4, 1985, a Wednesday. The S&P 500 fell 0.29% to close at 187.37. Of 5,711 US stocks that traded, 1,331 rose and 2,060 fell.
The S&P 500-0.29%closed at 187.37
How big a move#16,830of 24,799 trading days since 1928
$100 in the index since$4,112price only, to September 24, 2026
Stocks that rose1,331of 5,711; 2,060 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| NiSource (NI) | +4.6% |
| Scott Paper (SPP) | +3.1% |
| Utah Power & Light (UTP) | +2.7% |
Biggest falls among the 500 largest companies
| Lear Siegler Inc | -13.0% |
| Interfirst Corp (IFC) | -4.3% |
| Shared Medical Systems (SMS) | -4.3% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 3, 1985 · Every September 4 · September 5, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.