The stock market on September 15, 1971
September 15, 1971, a Wednesday. The S&P 500 rose 0.43% to close at 99.77. Of 2,352 US stocks that traded, 908 rose and 918 fell.
The S&P 500+0.43%closed at 99.77
How big a move#13,701of 24,799 trading days since 1928
$100 in the index since$7,722price only, to September 24, 2026
Stocks that rose908of 2,352; 918 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Amerada Hess (AHC) | +5.0% |
| Maxxam (MAXX) | +4.4% |
| Nstar (NST) | +3.8% |
Biggest falls among the 500 largest companies
| Times Mirror Co -ser A (TMC) | -3.4% |
| Ryerson Tull (RYI) | -3.2% |
| Coastal | -3.0% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 14, 1971 · Every September 15 · September 16, 1971 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.