Underfolio

Every trading day › 1975

The stock market on October 15, 1975

October 15, 1975, a Wednesday. The S&P 500 fell 0.06% to close at 89.23. Of 4,634 US stocks that traded, 1,051 rose and 1,209 fell.

The S&P 500-0.06%closed at 89.23
How big a move#23,185of 24,799 trading days since 1928
$100 in the index since$8,634price only, to September 24, 2026
Stocks that rose1,051of 4,634; 1,209 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Otis Elevator Co (OT.)+19.4%
Consolidated Edison (ED)+6.7%
Santa Fe International (SAF)+5.7%

Biggest falls among the 500 largest companies

Geico Corp (GEC)-9.6%
Tektronix (TEK)-8.1%
Pullman (PU)-7.4%

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

‹ October 14, 1975 · Every October 15 · October 16, 1975 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.