The stock market on October 20, 1983
October 20, 1983, a Thursday. The S&P 500 rose 0.15% to close at 166.98. Of 5,437 US stocks that traded, 1,734 rose and 1,580 fell.
The S&P 500+0.15%closed at 166.98
How big a move#20,479of 24,799 trading days since 1928
$100 in the index since$4,614price only, to September 24, 2026
Stocks that rose1,734of 5,437; 1,580 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Zenith Electronics (ZE) | +5.7% |
| Southland Royalty Co (SRO) | +5.6% |
| Intergraph Corp (INGR.) | +5.2% |
Biggest falls among the 500 largest companies
| Digital Equipment (DEC) | -7.6% |
| Tie/Communications Inc (TIE) | -6.1% |
| Avon Products (AVP) | -5.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ October 19, 1983 · Every October 20 · October 21, 1983 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.