Underfolio

Every trading day › 1991

The stock market on May 31, 1991

May 31, 1991, a Friday. The S&P 500 rose 0.74% to close at 389.83. Of 5,687 US stocks that traded, 2,196 rose and 1,394 fell.

The S&P 500+0.74%closed at 389.83
How big a move#8,745of 24,799 trading days since 1928
$100 in the index since$1,976price only, to September 24, 2026
Stocks that rose2,196of 5,687; 1,394 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for5stocks

Biggest rises among the 500 largest companies

IKON Office Solutions (IKN)+9.7%
Temple-Inland (TIN)+9.4%
Masco (MAS)+7.1%

Biggest falls among the 500 largest companies

Amgen (AMGN)-3.5%
McCormick (MKC)-3.3%
Schering-Plough (SGP)-2.9%

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

‹ May 30, 1991 · Every May 31 · June 3, 1991 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.