The stock market on September 21, 1970
September 21, 1970, a Monday. The S&P 500 fell 0.86% to close at 81.91. Of 2,270 US stocks that traded, 658 rose and 1,196 fell.
The S&P 500-0.86%closed at 81.91
How big a move#7,350of 24,799 trading days since 1928
$100 in the index since$9,406price only, to September 24, 2026
Stocks that rose658of 2,270; 1,196 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Seatrain Lines | +5.0% |
| Times Mirror Co -ser A (TMC) | +4.9% |
| Dome Petroleum Ltd (DMP) | +4.7% |
Biggest falls among the 500 largest companies
| Great Western Financial (GWF.) | -6.4% |
| Babcock & Wilcox Co-Old (BAW.) | -5.0% |
| Marine Midland Banks (MM) | -4.9% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 18, 1970 · Every September 21 · September 22, 1970 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.