Underfolio

Every trading day › 1981

The stock market on September 28, 1981

September 28, 1981, a Monday. The S&P 500 rose 2.45% to close at 115.53. Of 4,981 US stocks that traded, 1,548 rose and 2,099 fell.

The S&P 500+2.45%closed at 115.53
How big a move#1,092of 24,799 trading days since 1928
$100 in the index since$6,669price only, to September 24, 2026
Stocks that rose1,548of 4,981; 2,099 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

Noble Energy (NBL)+16.7%
Dome Petroleum Ltd (DMP)+16.3%
Western Co Of No Amer (WSN.)+13.1%

Biggest falls among the 500 largest companies

Virginia Electric & Power Co-4.4%
Duquesne Light Holdings Inc (DQE)-4.0%
Asarco Inc (AR)-3.8%

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

‹ September 25, 1981 · Every September 28 · September 29, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.