The stock market on May 21, 1970
May 21, 1970, a Thursday. The S&P 500 fell 1.85% to close at 72.16. Of 2,252 US stocks that traded, 307 rose and 1,692 fell.
The S&P 500-1.85%closed at 72.16
How big a move#1,973of 24,799 trading days since 1928
$100 in the index since$10,676price only, to September 24, 2026
Stocks that rose307of 2,252; 1,692 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Allegheny Technologies (ATI) | +7.5% |
| Mattel (MAT) | +7.0% |
| Ex Cell O (XLO) | +6.8% |
Biggest falls among the 500 largest companies
| Macmillan (MLL) | -14.5% |
| Eastern Enterprises (EFU) | -11.9% |
| Baxter International (BAX) | -11.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ May 20, 1970 · Every May 21 · May 22, 1970 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.