Underfolio

Every trading day › 1980

The stock market on December 23, 1980

December 23, 1980, a Tuesday. The S&P 500 fell 0.35% to close at 135.30. Of 4,683 US stocks that traded, 1,657 rose and 1,496 fell.

The S&P 500-0.35%closed at 135.30
How big a move#15,333of 24,799 trading days since 1928
$100 in the index since$5,694price only, to September 24, 2026
Stocks that rose1,657of 4,683; 1,496 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Walmart (WMT)+11.8%
Textron (TXT)+6.5%
Fannie Mae (FNMA)+6.3%

Biggest falls among the 500 largest companies

Amerac Energy Corp (AMC)-6.8%
Burlington Northern Santa Fe-6.3%
Murphy Oil Corporation (MUR)-6.0%

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

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

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.