Underfolio

Every trading day › 2013

The stock market on October 21, 2013

October 21, 2013, a Monday. The S&P 500 rose 0.01% to close at 1744.66. Of 3,857 US stocks that traded, 1,691 rose and 1,957 fell.

The S&P 500+0.01%closed at 1744.66
How big a move#24,343of 24,799 trading days since 1928
$100 in the index since$442price only, to September 24, 2026
Stocks that rose1,691of 3,857; 1,957 fell
Biggest companyAppleby market value that day

Biggest rises among the 500 largest companies

Netflix (NFLX)+6.4%
Celanese (CE)+5.9%
Hasbro (HAS)+5.3%

Biggest falls among the 500 largest companies

Tesla (TSLA)-5.9%
Pharmacyclics Inc (PCYC)-3.8%
Halliburton (HAL)-3.5%

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

‹ October 18, 2013 · Every October 21 · October 22, 2013 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.