Underfolio

Every trading day › 1983

The stock market on September 9, 1983

September 9, 1983, a Friday. The S&P 500 fell 0.51% to close at 166.92. Of 5,340 US stocks that traded, 1,628 rose and 1,513 fell.

The S&P 500-0.51%closed at 166.92
How big a move#12,338of 24,799 trading days since 1928
$100 in the index since$4,615price only, to September 24, 2026
Stocks that rose1,628of 5,340; 1,513 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Rolm (RM)+5.6%
Continental Corp. (CIC)+5.6%
Financial Corp Of America+4.7%

Biggest falls among the 500 largest companies

New Valley Corp (NVAL.)-10.1%
Convergent Inc (CVGT)-8.2%
American Express (AXP)-6.5%

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

‹ September 8, 1983 · Every September 9 · September 12, 1983 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.