The stock market on September 23, 1970
September 23, 1970, a Wednesday. The S&P 500 rose 0.06% to close at 81.91. Of 2,271 US stocks that traded, 1,341 rose and 517 fell.
The S&P 500+0.06%closed at 81.91
How big a move#23,047of 24,799 trading days since 1928
$100 in the index since$9,406price only, to September 24, 2026
Stocks that rose1,341of 2,271; 517 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Uccel Corp (UCE) | +10.1% |
| Gulf (GO) | +6.8% |
| Bunker Ramo Corp (BR) | +6.8% |
Biggest falls among the 500 largest companies
| American Standard (TT) | -5.4% |
| Pennwalt Corp (PSM) | -3.9% |
| MeadWestvaco (W) | -3.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 22, 1970 · Every September 23 · September 24, 1970 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.