Underfolio

Every trading day › 1999

The stock market on October 5, 1999

October 5, 1999, a Tuesday. The S&P 500 fell 0.25% to close at 1301.35. Of 6,752 US stocks that traded, 2,508 rose and 3,210 fell.

The S&P 500-0.25%closed at 1301.35
How big a move#17,751of 24,799 trading days since 1928
$100 in the index since$592price only, to September 24, 2026
Stocks that rose2,508of 6,752; 3,210 fell
Biggest companyMicrosoftby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Foundry Networks Inc (FDRY)+20.4%
Portal Software Inc (PRSF.)+12.8%
Tenet Healthcare (THC)+11.3%

Biggest falls among the 500 largest companies

Paccar (PCAR)-13.5%
Halliburton (HAL)-13.2%
Computer Sciences (CSC)-11.9%

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

‹ October 4, 1999 · Every October 5 · October 6, 1999 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.