The stock market on October 18, 1985
October 18, 1985, a Friday. The S&P 500 fell 0.33% to close at 187.04. Of 5,726 US stocks that traded, 1,755 rose and 1,661 fell.
The S&P 500-0.33%closed at 187.04
How big a move#15,833of 24,799 trading days since 1928
$100 in the index since$4,119price only, to September 24, 2026
Stocks that rose1,755of 5,726; 1,661 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Litton Industries (LIT) | +14.1% |
| Harris (HRS) | +6.5% |
| Allegheny Technologies (ATI) | +5.3% |
Biggest falls among the 500 largest companies
| Colgate-Palmolive (CL) | -3.5% |
| Motorola Solutions (MOT) | -3.4% |
| Intel (INTC) | -3.2% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ October 17, 1985 · Every October 18 · October 21, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.