Underfolio

Every trading day › 1991

The stock market on September 20, 1991

September 20, 1991, a Friday. The S&P 500 rose 0.09% to close at 387.92. Of 5,728 US stocks that traded, 2,101 rose and 1,536 fell.

The S&P 500+0.09%closed at 387.92
How big a move#22,040of 24,799 trading days since 1928
$100 in the index since$1,986price only, to September 24, 2026
Stocks that rose2,101of 5,728; 1,536 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Tele-Comm Tci Group -ser A (TCOMA)+8.8%
MBIA Inc. (MBI)+7.3%
Novell (NOVL)+5.8%

Biggest falls among the 500 largest companies

Lotus Development Corp (LOTS.)-5.0%
Monsanto (MTC)-4.3%
Flightsafety International (FSI)-4.1%

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

‹ September 19, 1991 · Every September 20 · September 23, 1991 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.