The stock market on October 20, 1970
October 20, 1970, a Tuesday. The S&P 500 rose 0.59% to close at 83.64. Of 2,283 US stocks that traded, 887 rose and 901 fell.
The S&P 500+0.59%closed at 83.64
How big a move#10,901of 24,799 trading days since 1928
$100 in the index since$9,211price only, to September 24, 2026
Stocks that rose887of 2,283; 901 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Telex Corp (TC) | +10.9% |
| Uccel Corp (UCE) | +9.3% |
| Natomas Co (NOM) | +8.8% |
Biggest falls among the 500 largest companies
| Goodrich (GR) | -4.8% |
| Marshall Field & Co (MF.) | -4.2% |
| Multigraphics Inc (MTI) | -4.0% |
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.