Underfolio

Every trading day › 1978

The stock market on August 23, 1978

August 23, 1978, a Wednesday. The S&P 500 rose 0.58% to close at 104.91. Of 4,538 US stocks that traded, 1,768 rose and 838 fell.

The S&P 500+0.58%closed at 104.91
How big a move#11,137of 24,799 trading days since 1928
$100 in the index since$7,344price only, to September 24, 2026
Stocks that rose1,768of 4,538; 838 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Signal Companies (SGN)+6.3%
Maxus Energy (MXS)+5.9%
Getty Oil (GET)+5.7%

Biggest falls among the 500 largest companies

Texaco (TX)-3.4%
Snap-On (SNA)-3.0%
Dome Mines (DM)-2.3%

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

‹ August 22, 1978 · Every August 23 · August 24, 1978 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.