Underfolio

Every trading day › 1981

The stock market on September 18, 1981

September 18, 1981, a Friday. The S&P 500 fell 0.76% to close at 116.26. Of 4,995 US stocks that traded, 856 rose and 2,262 fell.

The S&P 500-0.76%closed at 116.26
How big a move#8,516of 24,799 trading days since 1928
$100 in the index since$6,627price only, to September 24, 2026
Stocks that rose856of 4,995; 2,262 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

BankAmerica Corp.+4.6%
Carnation (CMK)+3.9%
Storage Technology (STK)+3.6%

Biggest falls among the 500 largest companies

Ashland (ASH)-11.8%
Crystal Gas Storage Inc (COR)-8.9%
Pioneer Corp-Texas (PNA)-8.0%

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

‹ September 17, 1981 · Every September 18 · September 21, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.