Underfolio

Every trading day › 1978

The stock market on May 31, 1978

May 31, 1978, a Wednesday. The S&P 500 rose 0.39% to close at 97.24. Of 4,570 US stocks that traded, 1,577 rose and 933 fell.

The S&P 500+0.39%closed at 97.24
How big a move#14,540of 24,799 trading days since 1928
$100 in the index since$7,923price only, to September 24, 2026
Stocks that rose1,577of 4,570; 933 fell
Biggest companyAT&T Corporationby market value that day
Last day of trading for8stocks

Biggest rises among the 500 largest companies

Pioneer Hi-Bred International, Inc. (PHB)+6.6%
Celanese Corp-Old (CZ)+5.7%
Squibb Corp. (SQB)+5.5%

Biggest falls among the 500 largest companies

Bally Entertainment (BLY)-5.6%
Southland Royalty Co (SRO)-3.9%
U S Bancorp-Old (USBC.)-3.0%

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

‹ May 30, 1978 · Every May 31 · June 1, 1978 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.