Underfolio

Every trading day › 1971

The stock market on May 27, 1971

May 27, 1971, a Thursday. The S&P 500 fell 0.19% to close at 99.40. Of 2,320 US stocks that traded, 791 rose and 986 fell.

The S&P 500-0.19%closed at 99.40
How big a move#19,302of 24,799 trading days since 1928
$100 in the index since$7,751price only, to September 24, 2026
Stocks that rose791of 2,320; 986 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Mead (MEA)+6.2%
Gk Technologies Inc (GK.)+4.8%
Ramanda Inc. (RAM)+4.6%

Biggest falls among the 500 largest companies

Dun & Bradstreet Holdngs Inc (DNB)-5.9%
Mattel (MAT)-5.4%

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

‹ May 26, 1971 · Every May 27 · May 28, 1971 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.