Underfolio

Every trading day › 1970

The stock market on December 17, 1970

December 17, 1970, a Thursday. The S&P 500 rose 0.36% to close at 90.04. Of 2,296 US stocks that traded, 1,026 rose and 747 fell.

The S&P 500+0.36%closed at 90.04
How big a move#15,264of 24,799 trading days since 1928
$100 in the index since$8,556price only, to September 24, 2026
Stocks that rose1,026of 2,296; 747 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Ethyl (NEU)+7.9%
American General (AGC)+7.7%
CNA Financial Corporation (CNA)+5.7%

Biggest falls among the 500 largest companies

Memorex Corp (MRX)-9.6%
Cordant Technologies Inc (CDD)-5.1%
Digital Equipment (DEC)-4.6%

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

‹ December 16, 1970 · Every December 17 · December 18, 1970 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.