The stock market on March 31, 1980
March 31, 1980, a Monday. The S&P 500 rose 1.40% to close at 102.09. Of 4,533 US stocks that traded, 2,046 rose and 744 fell.
The S&P 500+1.40%closed at 102.09
How big a move#3,502of 24,799 trading days since 1928
$100 in the index since$7,546price only, to September 24, 2026
Stocks that rose2,046of 4,533; 744 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for3stocks
Biggest rises among the 500 largest companies
| Supron Energy Corp (SUE) | +16.1% |
| Sundance Oil (SDN) | +14.6% |
| Asarco Inc (AR) | +8.6% |
Biggest falls among the 500 largest companies
| Storage Technology (STK) | -3.5% |
| Inexco Oil (INX) | -3.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ March 28, 1980 · Every March 31 · April 1, 1980 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.