Underfolio

Every trading day › 1970

The stock market on October 21, 1970

October 21, 1970, a Wednesday. The S&P 500 rose 0.02% to close at 83.66. Of 2,283 US stocks that traded, 826 rose and 943 fell.

The S&P 500+0.02%closed at 83.66
How big a move#23,989of 24,799 trading days since 1928
$100 in the index since$9,209price only, to September 24, 2026
Stocks that rose826of 2,283; 943 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Campbell Soup (CPB)+5.9%
Nabisco Group Holdings (NGH)+5.1%
Target (TGT)+5.0%

Biggest falls among the 500 largest companies

Goodrich (GR)-7.4%
Natomas Co (NOM)-6.9%
Pharmacia (PNU)-6.3%

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

‹ October 20, 1970 · Every October 21 · October 22, 1970 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.