Underfolio

Every trading day › 1991

The stock market on December 31, 1991

December 31, 1991, a Tuesday. The S&P 500 rose 0.47% to close at 417.09. Of 5,788 US stocks that traded, 2,627 rose and 1,393 fell.

The S&P 500+0.47%closed at 417.09
How big a move#12,967of 24,799 trading days since 1928
$100 in the index since$1,847price only, to September 24, 2026
Stocks that rose2,627of 5,788; 1,393 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for10stocks

Biggest rises among the 500 largest companies

Polaroid (PRDCQ)+9.2%
Amgen (AMGN)+9.2%
Homestake Mining (HM)+8.5%

Biggest falls among the 500 largest companies

J.P. Morgan Chase & Co. (CMB)-9.1%
U S Healthcare Inc (USHC)-7.8%
Manufactures Hanover (MHC)-7.1%

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

‹ December 30, 1991 · Every December 31 · January 2, 1992 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.