Underfolio

Every trading day › 1981

The stock market on September 11, 1981

September 11, 1981, a Friday. The S&P 500 rose 1.22% to close at 121.61. Of 4,981 US stocks that traded, 2,357 rose and 818 fell.

The S&P 500+1.22%closed at 121.61
How big a move#4,415of 24,799 trading days since 1928
$100 in the index since$6,335price only, to September 24, 2026
Stocks that rose2,357of 4,981; 818 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Pittston Brinks (PZB)+10.4%
Supron Energy Corp (SUE)+8.9%
Citicorp+7.1%

Biggest falls among the 500 largest companies

Harbinger Group Inc (HRG)-3.2%
Emerson Electric (EMR)-2.5%
Coastal-2.4%

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

‹ September 10, 1981 · Every September 11 · September 14, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.