Underfolio

Every trading day › 1984

The stock market on August 21, 1984

August 21, 1984, a Tuesday. The S&P 500 rose 1.75% to close at 167.83. Of 5,746 US stocks that traded, 2,330 rose and 988 fell.

The S&P 500+1.75%closed at 167.83
How big a move#2,224of 24,799 trading days since 1928
$100 in the index since$4,590price only, to September 24, 2026
Stocks that rose2,330of 5,746; 988 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

L Brands (LTD)+8.3%
Texas Eastern Corp+7.8%
M/a-com (MAI)+7.6%

Biggest falls among the 500 largest companies

Newmont Mining (NEM)-4.0%
Engelhard (EC)-3.7%
V.F. Corporation (VFC)-3.0%

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

‹ August 20, 1984 · Every August 21 · August 22, 1984 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.