Underfolio

Every trading day › 1981

The stock market on February 20, 1981

February 20, 1981, a Friday. The S&P 500 fell 0.02% to close at 126.58. Of 4,727 US stocks that traded, 1,159 rose and 1,769 fell.

The S&P 500-0.02%closed at 126.58
How big a move#23,998of 24,799 trading days since 1928
$100 in the index since$6,086price only, to September 24, 2026
Stocks that rose1,159of 4,727; 1,769 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Superior Oil (SOC)+6.8%
Owens-Illinois (OI)+6.3%
Scientific-Atlanta (SFA)+5.7%

Biggest falls among the 500 largest companies

American Medical Int'l (AMI)-5.4%
Combustion Engineering (CSP)-5.4%
Apple (AAPL)-5.3%

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

‹ February 19, 1981 · Every February 20 · February 23, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.