Underfolio

Every trading day › 1984

The stock market on August 16, 1984

August 16, 1984, a Thursday. The S&P 500 rose 0.60% to close at 163.77. Of 5,804 US stocks that traded, 1,803 rose and 1,377 fell.

The S&P 500+0.60%closed at 163.77
How big a move#10,804of 24,799 trading days since 1928
$100 in the index since$4,704price only, to September 24, 2026
Stocks that rose1,803of 5,804; 1,377 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for3stocks

Biggest rises among the 500 largest companies

KeySpan (KSE)+8.2%
Kaisertech Ltd+5.1%
Wang Labs Inc (WANG)+4.7%

Biggest falls among the 500 largest companies

Mercantile Stores (MST.)-8.2%
Hewlett-Packard (HWP)-4.5%
Deluxe Corporation (DLX)-3.9%

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

‹ August 15, 1984 · Every August 16 · August 17, 1984 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.