Underfolio

Every trading day › 1980

The stock market on October 7, 1980

October 7, 1980, a Tuesday. The S&P 500 fell 0.55% to close at 131.00. Of 4,607 US stocks that traded, 1,406 rose and 1,629 fell.

The S&P 500-0.55%closed at 131.00
How big a move#11,516of 24,799 trading days since 1928
$100 in the index since$5,881price only, to September 24, 2026
Stocks that rose1,406of 4,607; 1,629 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Auto Data Proc (AUD)+4.3%
Pe Corp-Pe Biosy (PEB)+4.1%
Nicor Gas (GAS)+3.9%

Biggest falls among the 500 largest companies

Iu International Corp (IU)-6.0%
Chrysler Corp (C)-5.3%
Searle G D & (SRL)-4.8%

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

‹ October 6, 1980 · Every October 7 · October 8, 1980 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.