Underfolio

Every trading day › 1999

The stock market on October 22, 1999

October 22, 1999, a Friday. The S&P 500 rose 1.41% to close at 1301.65. Of 6,758 US stocks that traded, 3,379 rose and 2,331 fell.

The S&P 500+1.41%closed at 1301.65
How big a move#3,486of 24,799 trading days since 1928
$100 in the index since$592price only, to September 24, 2026
Stocks that rose3,379of 6,758; 2,331 fell
Biggest companyMicrosoftby market value that day
Last day of trading for4stocks

Biggest rises among the 500 largest companies

Reliastar Financial Corp (RLR)+24.4%
American Power Conversion (APCC)+20.6%
Credit Suisse USA Inc+18.3%

Biggest falls among the 500 largest companies

Inktomi Corp (INKT)-14.5%
Cardinal Health (CAH)-12.0%
Biogen Inc-Old (BGEN)-11.3%

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

‹ October 21, 1999 · Every October 22 · October 25, 1999 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.