Underfolio

Every trading day › 1984

The stock market on August 17, 1984

August 17, 1984, a Friday. The S&P 500 rose 0.23% to close at 164.14. Of 5,781 US stocks that traded, 1,578 rose and 1,497 fell.

The S&P 500+0.23%closed at 164.14
How big a move#18,360of 24,799 trading days since 1928
$100 in the index since$4,694price only, to September 24, 2026
Stocks that rose1,578of 5,781; 1,497 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Parker-Hannifin (PH)+4.0%
NL Industries, Inc. (NL)+4.0%
General Re (GRN)+3.9%

Biggest falls among the 500 largest companies

Lowe's (LOW)-6.4%
Price Co (PCLB)-3.9%
Fannie Mae (FNMA)-3.7%

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

‹ August 16, 1984 · Every August 17 · August 20, 1984 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.