Underfolio

Every trading day › 1970

The stock market on August 17, 1970

August 17, 1970, a Monday. The S&P 500 rose 0.20% to close at 75.33. Of 2,263 US stocks that traded, 810 rose and 925 fell.

The S&P 500+0.20%closed at 75.33
How big a move#19,065of 24,799 trading days since 1928
$100 in the index since$10,227price only, to September 24, 2026
Stocks that rose810of 2,263; 925 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Ampex Corp (APX)+6.4%
Magnavox Co (MAG)+5.3%
Skyline Champion Corporation (SKY)+5.2%

Biggest falls among the 500 largest companies

Burlington Northern Santa Fe-10.5%
Aquitaine Co Canada Ltd (AQC)-7.7%
Uop Inc (UOP)-6.4%

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

‹ August 14, 1970 · Every August 17 · August 18, 1970 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.