Underfolio

Every trading day › 1978

The stock market on March 17, 1978

March 17, 1978, a Friday. The S&P 500 rose 0.77% to close at 90.20. Of 4,577 US stocks that traded, 1,695 rose and 764 fell.

The S&P 500+0.77%closed at 90.20
How big a move#8,365of 24,799 trading days since 1928
$100 in the index since$8,541price only, to September 24, 2026
Stocks that rose1,695of 4,577; 764 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

Hercules (HPC)+9.5%
Delta Air Lines (DAL)+6.4%
Koppers (KOP)+5.5%

Biggest falls among the 500 largest companies

Houston Oil & Minerals (HOI)-7.9%
CSX Corporation (CSX)-3.2%
Aquitaine Co Canada Ltd (AQC)-3.1%

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

‹ March 16, 1978 · Every March 17 · March 20, 1978 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.