The stock market on April 21, 1971
April 21, 1971, a Wednesday. The S&P 500 fell 0.24% to close at 103.36. Of 2,309 US stocks that traded, 755 rose and 1,084 fell.
The S&P 500-0.24%closed at 103.36
How big a move#17,948of 24,799 trading days since 1928
$100 in the index since$7,454price only, to September 24, 2026
Stocks that rose755of 2,309; 1,084 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Babcock & Wilcox Co-Old (BAW.) | +10.7% |
| Technicon Corp (TCN) | +8.8% |
| Flagstar Corp | +7.6% |
Biggest falls among the 500 largest companies
| Electronic Data Systems (EDS.) | -7.2% |
| Diebold Nixdorf Incorporated (DBD) | -6.3% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ April 20, 1971 · Every April 21 · April 22, 1971 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.