The stock market on August 21, 1970
August 21, 1970, a Friday. The S&P 500 rose 1.80% to close at 79.24. Of 2,264 US stocks that traded, 1,400 rose and 463 fell.
The S&P 500+1.80%closed at 79.24
How big a move#2,102of 24,799 trading days since 1928
$100 in the index since$9,723price only, to September 24, 2026
Stocks that rose1,400of 2,264; 463 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Chrysler Corp (C) | +11.9% |
| Great Western Financial (GWF.) | +10.5% |
| Auto Data Proc (AUD) | +9.6% |
Biggest falls among the 500 largest companies
| Burlington Northern Santa Fe | -6.5% |
| American General (AGC) | -3.3% |
| Pillsbury Co | -3.2% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 20, 1970 · Every August 21 · August 24, 1970 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.