Underfolio

Every trading day › 1983

The stock market on October 13, 1983

October 13, 1983, a Thursday. The S&P 500 rose 0.15% to close at 169.87. Of 5,427 US stocks that traded, 1,252 rose and 2,012 fell.

The S&P 500+0.15%closed at 169.87
How big a move#20,544of 24,799 trading days since 1928
$100 in the index since$4,535price only, to September 24, 2026
Stocks that rose1,252of 5,427; 2,012 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Apple (AAPL)+8.9%
Noble Energy (NBL)+7.5%
Convergent Inc (CVGT)+7.2%

Biggest falls among the 500 largest companies

Intergraph Corp (INGR.)-6.9%
Noram Energy Corp-6.1%
Shared Medical Systems (SMS)-5.9%

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

‹ October 12, 1983 · Every October 13 · October 14, 1983 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.