Underfolio

Every trading day › 1990

The stock market on October 12, 1990

October 12, 1990, a Friday. The S&P 500 rose 1.55% to close at 300.03. Of 5,794 US stocks that traded, 1,928 rose and 1,635 fell.

The S&P 500+1.55%closed at 300.03
How big a move#2,888of 24,799 trading days since 1928
$100 in the index since$2,568price only, to September 24, 2026
Stocks that rose1,928of 5,794; 1,635 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Gap, Inc. (The) (GPS)+10.3%
Maytag (MYG)+9.3%
Mercantile Stores (MST.)+8.3%

Biggest falls among the 500 largest companies

Compaq Computer (CPQ)-5.8%
Cellular Commun Inc -cl A (COMMA)-5.6%
Parker-Hannifin (PH)-4.8%

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

‹ October 11, 1990 · Every October 12 · October 15, 1990 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.