Underfolio

Every trading day › 1971

The stock market on May 11, 1971

May 11, 1971, a Tuesday. The S&P 500 rose 0.25% to close at 102.62. Of 2,315 US stocks that traded, 1,023 rose and 852 fell.

The S&P 500+0.25%closed at 102.62
How big a move#17,618of 24,799 trading days since 1928
$100 in the index since$7,507price only, to September 24, 2026
Stocks that rose1,023of 2,315; 852 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Arlen Corp (ARRD)+8.9%
Kaiser Industries Corp (KI)+5.7%
U S Industries (USI)+5.1%

Biggest falls among the 500 largest companies

Ceridian Corp (CEN)-4.0%
Dun & Bradstreet Holdngs Inc (DNB)-3.8%
Entergy Gulf States La LLC-3.6%

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

‹ May 10, 1971 · Every May 11 · May 12, 1971 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.