Underfolio

Every trading day › 1970

The stock market on August 18, 1970

August 18, 1970, a Tuesday. The S&P 500 rose 1.15% to close at 76.20. Of 2,263 US stocks that traded, 1,142 rose and 618 fell.

The S&P 500+1.15%closed at 76.20
How big a move#4,818of 24,799 trading days since 1928
$100 in the index since$10,110price only, to September 24, 2026
Stocks that rose1,142of 2,263; 618 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Signal Companies (SGN)+7.1%
Walter (jim) Corp (JWC.)+6.9%
Burlington Northern Santa Fe+5.6%

Biggest falls among the 500 largest companies

Bestfoods (BFO)-5.3%
Asarco Inc (AR)-4.4%
Consolidated Edison (ED)-3.7%

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

‹ August 17, 1970 · Every August 18 · August 19, 1970 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.