The stock market on September 17, 1980
September 17, 1980, a Wednesday. The S&P 500 rose 1.68% to close at 128.87. Of 4,586 US stocks that traded, 2,180 rose and 907 fell.
The S&P 500+1.68%closed at 128.87
How big a move#2,426of 24,799 trading days since 1928
$100 in the index since$5,978price only, to September 24, 2026
Stocks that rose2,180of 4,586; 907 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Raychem Corp (RYC.) | +12.4% |
| Rolm (RM) | +10.8% |
| Cray Research (CYR) | +10.3% |
Biggest falls among the 500 largest companies
| Asarco Inc (AR) | -4.6% |
| Eckerd (ECK) | -4.2% |
| Campbell Red Lake Mines (CRK) | -4.0% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 16, 1980 · Every September 17 · September 18, 1980 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.