The stock market on March 31, 1971
March 31, 1971, a Wednesday. The S&P 500 rose 0.05% to close at 100.31. Of 2,301 US stocks that traded, 1,020 rose and 871 fell.
The S&P 500+0.05%closed at 100.31
How big a move#23,328of 24,799 trading days since 1928
$100 in the index since$7,680price only, to September 24, 2026
Stocks that rose1,020of 2,301; 871 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Genuine Parts (GPC) | +10.6% |
| Boeing (BA) | +7.8% |
| Gdv Inc (GDVI) | +5.0% |
Biggest falls among the 500 largest companies
| Maytag (MYG) | -5.4% |
| Occidental Petroleum (OXY) | -4.3% |
| Essex Intl Inc (EXC) | -4.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ March 30, 1971 · Every March 31 · April 1, 1971 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.