Underfolio

Every trading day › 1975

The stock market on April 30, 1975

April 30, 1975, a Wednesday. The S&P 500 rose 1.94% to close at 87.30. Of 4,610 US stocks that traded, 1,412 rose and 1,058 fell.

The S&P 500+1.94%closed at 87.30
How big a move#1,797of 24,799 trading days since 1928
$100 in the index since$8,825price only, to September 24, 2026
Stocks that rose1,412of 4,610; 1,058 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Allegheny Technologies (ATI)+28.6%
Marathon Oil Corporation (MRO)+10.4%
Electronic Data Systems (EDS.)+10.0%

Biggest falls among the 500 largest companies

Colonial Penn Group Inc (CPG)-6.1%
Raytheon (RTN)-4.5%
Becton Dickinson (BDX)-3.8%

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

‹ April 29, 1975 · Every April 30 · May 1, 1975 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.