Underfolio

Every trading day › 1977

The stock market on June 20, 1977

June 20, 1977, a Monday. The S&P 500 rose 0.45% to close at 100.42. Of 4,680 US stocks that traded, 1,385 rose and 987 fell.

The S&P 500+0.45%closed at 100.42
How big a move#13,376of 24,799 trading days since 1928
$100 in the index since$7,672price only, to September 24, 2026
Stocks that rose1,385of 4,680; 987 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

RadioShack (TAN)+12.8%
Data General Corp (DGN.)+5.6%
Overseas Shipholding Group, Inc. (OSG)+5.4%

Biggest falls among the 500 largest companies

Warner Communications (WCI)-3.5%
Ual Corp. (UAL)-3.4%
Caliber System (CBB)-3.1%

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

‹ June 17, 1977 · Every June 20 · June 21, 1977 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.