Underfolio

Every trading day › 1981

The stock market on October 21, 1981

October 21, 1981, a Wednesday. The S&P 500 fell 0.15% to close at 120.10. Of 5,004 US stocks that traded, 1,531 rose and 1,399 fell.

The S&P 500-0.15%closed at 120.10
How big a move#20,485of 24,799 trading days since 1928
$100 in the index since$6,415price only, to September 24, 2026
Stocks that rose1,531of 5,004; 1,399 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Noble Energy (NBL)+10.4%
Lockheed Martin (LMT)+9.7%
Beckman Coulter (BEC)+6.9%

Biggest falls among the 500 largest companies

Levi Strauss (LEVI)-6.3%
Newmont Mining (NEM)-5.9%
Providian Corp (PVN)-5.9%

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

‹ October 20, 1981 · Every October 21 · October 22, 1981 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.