Underfolio

Every trading day › 1991

The stock market on January 11, 1991

January 11, 1991, a Friday. The S&P 500 rose 0.22% to close at 315.23. Of 5,723 US stocks that traded, 1,632 rose and 1,654 fell.

The S&P 500+0.22%closed at 315.23
How big a move#18,442of 24,799 trading days since 1928
$100 in the index since$2,444price only, to September 24, 2026
Stocks that rose1,632of 5,723; 1,654 fell
Biggest companyExxon Mobilby market value that day

Biggest rises among the 500 largest companies

Genentech Inc (DNA)+5.9%
Allergan (AGN)+5.8%
Price Co (PCLB)+4.8%

Biggest falls among the 500 largest companies

Lin Broadcasting (LINB)-7.6%
Snap-On (SNA)-6.9%
Baker Hughes (BKR)-5.5%

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

‹ January 10, 1991 · Every January 11 · January 14, 1991 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.