Underfolio

Every trading day › 1980

The stock market on September 10, 1980

September 10, 1980, a Wednesday. The S&P 500 rose 0.60% to close at 124.81. Of 4,580 US stocks that traded, 1,997 rose and 955 fell.

The S&P 500+0.60%closed at 124.81
How big a move#10,788of 24,799 trading days since 1928
$100 in the index since$6,173price only, to September 24, 2026
Stocks that rose1,997of 4,580; 955 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

Inexco Oil (INX)+8.0%
Mca Inc. (MCA)+7.4%
Cbi Industries Inc (CBI)+6.6%

Biggest falls among the 500 largest companies

Iu International Corp (IU)-6.0%
Coca-Cola (KO)-4.7%
Pogo Producing Co (PPP)-4.0%

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

‹ September 9, 1980 · Every September 10 · September 11, 1980 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.