Underfolio

Every trading day › 1985

The stock market on March 11, 1985

March 11, 1985, a Monday. The S&P 500 fell 0.17% to close at 178.79. Of 5,726 US stocks that traded, 1,276 rose and 2,110 fell.

The S&P 500-0.17%closed at 178.79
How big a move#19,784of 24,799 trading days since 1928
$100 in the index since$4,309price only, to September 24, 2026
Stocks that rose1,276of 5,726; 2,110 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Southwest Airlines (LUV)+4.7%
KeySpan (KSE)+3.7%
Salomon+3.5%

Biggest falls among the 500 largest companies

Mercantile Stores (MST.)-5.6%
M/a-com (MAI)-4.5%
Fort James (FJ)-3.9%

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

‹ March 8, 1985 · Every March 11 · March 12, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.