The stock market on April 20, 1977
April 20, 1977, a Wednesday. The S&P 500 rose 0.33% to close at 100.40. Of 4,686 US stocks that traded, 1,490 rose and 952 fell.
The S&P 500+0.33%closed at 100.40
How big a move#15,851of 24,799 trading days since 1928
$100 in the index since$7,673price only, to September 24, 2026
Stocks that rose1,490of 4,686; 952 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Gerber Products (GEB) | +16.5% |
| Carrier (CRR) | +5.6% |
| Westmoreland Coal Co (WLB) | +4.6% |
Biggest falls among the 500 largest companies
| Heublein (HBL) | -7.1% |
| RadioShack (TAN) | -4.4% |
| Certainteed Corp | -3.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ April 19, 1977 · Every April 20 · April 21, 1977 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.