The stock market on October 18, 1984
October 18, 1984, a Thursday. The S&P 500 rose 2.41% to close at 168.10. Of 5,754 US stocks that traded, 2,153 rose and 1,167 fell.
The S&P 500+2.41%closed at 168.10
How big a move#1,122of 24,799 trading days since 1928
$100 in the index since$4,583price only, to September 24, 2026
Stocks that rose2,153of 5,754; 1,167 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for5stocks
Biggest rises among the 500 largest companies
| Fannie Mae (FNMA) | +13.6% |
| MCI Communications (MCIC.) | +11.3% |
| National Semiconductor (NSM) | +10.8% |
Biggest falls among the 500 largest companies
| Mitchell Energy & Devel. (MND) | -5.5% |
| Dresser Industries Inc (DI.) | -5.0% |
| Mesa Inc (MXP.) | -4.5% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
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Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.