Underfolio

Every trading day › 1970

The stock market on September 18, 1970

September 18, 1970, a Friday. The S&P 500 rose 0.40% to close at 82.62. Of 2,269 US stocks that traded, 1,168 rose and 700 fell.

The S&P 500+0.40%closed at 82.62
How big a move#14,339of 24,799 trading days since 1928
$100 in the index since$9,325price only, to September 24, 2026
Stocks that rose1,168of 2,269; 700 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Bunker Ramo Corp (BR)+13.0%
Transamerica (TA)+7.6%
Canadian Superior Oil (CDS)+6.4%

Biggest falls among the 500 largest companies

PPG Industries (PPG)-5.2%
Nicor Gas (GAS)-4.9%
Ethyl (NEU)-4.7%

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

‹ September 17, 1970 · Every September 18 · September 21, 1970 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.