Underfolio

Every trading day › 1980

The stock market on January 23, 1980

January 23, 1980, a Wednesday. The S&P 500 rose 1.73% to close at 113.44. Of 4,517 US stocks that traded, 1,703 rose and 906 fell.

The S&P 500+1.73%closed at 113.44
How big a move#2,278of 24,799 trading days since 1928
$100 in the index since$6,791price only, to September 24, 2026
Stocks that rose1,703of 4,517; 906 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

Natomas Co (NOM)+14.3%
R & B Falcon Corp (FLC)+11.3%
Texas Oil & Gas (TXO)+10.8%

Biggest falls among the 500 largest companies

Caesars World (CAW)-4.1%
Beneficial (BNL)-3.4%
Georgia-Pacific (GP)-3.4%

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

‹ January 22, 1980 · Every January 23 · January 24, 1980 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.