Underfolio

Every trading day › 1983

The stock market on January 20, 1983

January 20, 1983, a Thursday. The S&P 500 rose 0.70% to close at 146.29. Of 5,021 US stocks that traded, 1,659 rose and 1,428 fell.

The S&P 500+0.70%closed at 146.29
How big a move#9,256of 24,799 trading days since 1928
$100 in the index since$5,266price only, to September 24, 2026
Stocks that rose1,659of 5,021; 1,428 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for5stocks

Biggest rises among the 500 largest companies

Apple (AAPL)+11.2%
Helmerich & Payne, Inc. (HP)+9.1%
Mobil Corporation (MOB)+8.3%

Biggest falls among the 500 largest companies

American Airlines Group (AMR)-6.0%
McKesson (MCK)-5.8%
H.F. Ahmanson (AHM)-5.4%

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

‹ January 19, 1983 · Every January 20 · January 21, 1983 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.