Underfolio

Every trading day › 2011

The stock market on April 21, 2011

April 21, 2011, a Thursday. The S&P 500 rose 0.53% to close at 1337.38. Of 4,077 US stocks that traded, 2,365 rose and 1,470 fell.

The S&P 500+0.53%closed at 1337.38
How big a move#11,992of 24,799 trading days since 1928
$100 in the index since$576price only, to September 24, 2026
Stocks that rose2,365of 4,077; 1,470 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

Biogen (BIIB)+15.2%
Slm Corp (SLM)+12.8%
UnitedHealth Group (UNH)+8.1%

Biggest falls among the 500 largest companies

Lam Research (LRCX)-5.9%
Xerox (XRX)-5.8%
KLA Corporation (KLAC)-4.5%

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

‹ April 20, 2011 · Every April 21 · April 25, 2011 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.