Underfolio

Every trading day › 1990

The stock market on September 6, 1990

September 6, 1990, a Thursday. The S&P 500 fell 1.21% to close at 320.46. Of 5,808 US stocks that traded, 1,293 rose and 2,141 fell.

The S&P 500-1.21%closed at 320.46
How big a move#4,490of 24,799 trading days since 1928
$100 in the index since$2,404price only, to September 24, 2026
Stocks that rose1,293of 5,808; 2,141 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Berkshire Hathaway (BRK)+6.8%
Enron (ENRNQ)+6.5%
Progressive (PGR)+5.5%

Biggest falls among the 500 largest companies

Motorola Solutions (MOT)-11.0%
Valhi, Inc. (VHI)-9.9%
Oracle (ORCL)-7.1%

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

‹ September 5, 1990 · Every September 6 · September 7, 1990 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.