Underfolio

Every trading day › 2015

The stock market on October 21, 2015

October 21, 2015, a Wednesday. The S&P 500 fell 0.58% to close at 2018.94. Of 3,971 US stocks that traded, 879 rose and 2,931 fell.

The S&P 500-0.58%closed at 2018.94
How big a move#11,014of 24,799 trading days since 1928
$100 in the index since$382price only, to September 24, 2026
Stocks that rose879of 3,971; 2,931 fell
Biggest companyAppleby market value that day

Biggest rises among the 500 largest companies

KLA Corporation (KLAC)+18.8%
General Motors (GM)+5.8%
Intuitive Surgical, Inc. (ISRG)+5.6%

Biggest falls among the 500 largest companies

Polaris Inc. (PII)-10.2%
St Jude Medical (STJ)-8.9%
EMC Corporation (EMC)-6.3%

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

‹ October 20, 2015 · Every October 21 · October 22, 2015 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.