Underfolio

Every trading day › 1980

The stock market on January 9, 1980

January 9, 1980, a Wednesday. The S&P 500 rose 0.09% to close at 109.05. Of 4,516 US stocks that traded, 1,859 rose and 922 fell.

The S&P 500+0.09%closed at 109.05
How big a move#22,070of 24,799 trading days since 1928
$100 in the index since$7,065price only, to September 24, 2026
Stocks that rose1,859of 4,516; 922 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Placer Dome Inc (PDG)+7.2%
Gould Inc (GLD)+6.6%
Raychem Corp (RYC.)+6.5%

Biggest falls among the 500 largest companies

Lockheed Martin (LMT)-6.6%
Marathon Oil (MRO)-6.5%
Merrill Lynch (MER)-6.3%

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

‹ January 8, 1980 · Every January 9 · January 10, 1980 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.