The stock market on August 20, 1970
August 20, 1970, a Thursday. The S&P 500 rose 1.14% to close at 77.84. Of 2,264 US stocks that traded, 913 rose and 833 fell.
The S&P 500+1.14%closed at 77.84
How big a move#4,902of 24,799 trading days since 1928
$100 in the index since$9,897price only, to September 24, 2026
Stocks that rose913of 2,264; 833 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Pacific Petroleums Ltd (PP) | +8.4% |
| Gk Technologies Inc (GK.) | +6.0% |
Biggest falls among the 500 largest companies
| Esmark (ESM) | -10.4% |
| Schlitz (jos.) Brewing Co (SLZ.) | -5.7% |
| American Airlines Group (AMR) | -4.7% |
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.