Underfolio

Every trading day › 1978

The stock market on April 28, 1978

April 28, 1978, a Friday. The S&P 500 rose 1.01% to close at 96.83. Of 4,581 US stocks that traded, 1,635 rose and 859 fell.

The S&P 500+1.01%closed at 96.83
How big a move#5,935of 24,799 trading days since 1928
$100 in the index since$7,956price only, to September 24, 2026
Stocks that rose1,635of 4,581; 859 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for2stocks

Biggest rises among the 500 largest companies

Allegheny Technologies (ATI)+10.8%
Wendy's International Inc (WEN)+6.5%
Ual Corp. (UAL)+6.2%

Biggest falls among the 500 largest companies

Seven-Up Co (SEVN.)-5.3%
Providian Corp (PVN)-5.2%
Kennecott (KN)-3.0%

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

‹ April 27, 1978 · Every April 28 · May 1, 1978 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.