Underfolio

Every trading day › 1985

The stock market on March 21, 1985

March 21, 1985, a Thursday. The S&P 500 rose 0.15% to close at 179.35. Of 5,725 US stocks that traded, 1,660 rose and 1,609 fell.

The S&P 500+0.15%closed at 179.35
How big a move#20,459of 24,799 trading days since 1928
$100 in the index since$4,296price only, to September 24, 2026
Stocks that rose1,660of 5,725; 1,609 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Dillard's (DDS)+8.6%
Tandem Computers Inc (TDM.)+6.0%
Sterling Drug (STY)+4.9%

Biggest falls among the 500 largest companies

Parker-Hannifin (PH)-6.3%
Olin (OLN)-4.2%
GTE Corporation (GTE)-3.8%

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

‹ March 20, 1985 · Every March 21 · March 22, 1985 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.