Underfolio

Every trading day › 1980

The stock market on February 21, 1980

February 21, 1980, a Thursday. The S&P 500 fell 1.02% to close at 115.28. Of 4,517 US stocks that traded, 862 rose and 1,845 fell.

The S&P 500-1.02%closed at 115.28
How big a move#5,844of 24,799 trading days since 1928
$100 in the index since$6,683price only, to September 24, 2026
Stocks that rose862of 4,517; 1,845 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Aquitaine Co Canada Ltd (AQC)+9.8%
Husky Oil Ltd (HYO)+7.2%
Sabine Corp (SAB)+6.8%

Biggest falls among the 500 largest companies

Stanley Black & Decker (SWK)-8.0%
Bethlehem Steel-7.1%
American Cyanamid (ACY)-7.1%

Stock moves count dividends; the index is price only. Market values after 2024 are estimates.

‹ February 20, 1980 · Every February 21 · February 22, 1980 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.