Underfolio

Every trading day › 1979

The stock market on April 18, 1979

April 18, 1979, a Wednesday. The S&P 500 rose 0.45% to close at 101.70. Of 4,525 US stocks that traded, 1,562 rose and 851 fell.

The S&P 500+0.45%closed at 101.70
How big a move#13,299of 24,799 trading days since 1928
$100 in the index since$7,575price only, to September 24, 2026
Stocks that rose1,562of 4,525; 851 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Olin (OLN)+6.2%
Iu International Corp (IU)+6.1%
Pullman (PU)+6.0%

Biggest falls among the 500 largest companies

Willamette Industries (WLL)-3.6%
GPU Inc (General Public Utilities) (GPU)-2.9%
Waste Management Inc-Old (WMX)-2.8%

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

‹ April 17, 1979 · Every April 18 · April 19, 1979 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.