Underfolio

Every trading day › 2001

The stock market on October 15, 2001

October 15, 2001, a Monday. The S&P 500 fell 0.15% to close at 1089.98. Of 5,848 US stocks that traded, 2,641 rose and 2,657 fell.

The S&P 500-0.15%closed at 1089.98
How big a move#20,402of 24,799 trading days since 1928
$100 in the index since$707price only, to September 24, 2026
Stocks that rose2,641of 5,848; 2,657 fell
Biggest companyGeneral Electricby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

Amazon.com (AMZN)+10.0%
AdvancePCS (ADVP)+7.7%
Symantec (SYMC)+6.0%

Biggest falls among the 500 largest companies

Altera (ALTR)-11.6%
Applied Micro Circuits (AMCC)-11.2%
Micron Technology (MU)-9.3%

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

‹ October 12, 2001 · Every October 15 · October 16, 2001 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.