Underfolio

Every trading day › 1983

The stock market on October 6, 1983

October 6, 1983, a Thursday. The S&P 500 rose 1.51% to close at 170.28. Of 5,403 US stocks that traded, 2,080 rose and 1,246 fell.

The S&P 500+1.51%closed at 170.28
How big a move#3,027of 24,799 trading days since 1928
$100 in the index since$4,524price only, to September 24, 2026
Stocks that rose2,080of 5,403; 1,246 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

R.R. Donnelley & Sons (DNY)+7.3%
Service Merchandise+7.0%
Intergraph Corp (INGR.)+6.4%

Biggest falls among the 500 largest companies

Goodrich (GR)-3.7%
Noble Energy (NBL)-3.6%
Convergent Inc (CVGT)-2.8%

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

‹ October 5, 1983 · Every October 6 · October 7, 1983 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.