Underfolio

Every trading day › 1991

The stock market on September 18, 1991

September 18, 1991, a Wednesday. The S&P 500 rose 0.37% to close at 386.94. Of 5,728 US stocks that traded, 1,825 rose and 1,579 fell.

The S&P 500+0.37%closed at 386.94
How big a move#14,939of 24,799 trading days since 1928
$100 in the index since$1,991price only, to September 24, 2026
Stocks that rose1,825of 5,728; 1,579 fell
Biggest companyExxon Mobilby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Bear Stearns (BSC)+9.3%
Kroger (KR)+8.8%
Centocor Inc (CNTO.)+6.5%

Biggest falls among the 500 largest companies

McCormick (MKC)-5.5%
Destec Energy Inc (ENG)-3.0%
Sherwin-Williams (SHW)-2.6%

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

‹ September 17, 1991 · Every September 18 · September 19, 1991 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.