Underfolio

Every trading day › 1977

The stock market on September 16, 1977

September 16, 1977, a Friday. The S&P 500 fell 0.33% to close at 96.48. Of 4,653 US stocks that traded, 1,115 rose and 1,213 fell.

The S&P 500-0.33%closed at 96.48
How big a move#15,826of 24,799 trading days since 1928
$100 in the index since$7,985price only, to September 24, 2026
Stocks that rose1,115of 4,653; 1,213 fell
Biggest companyAT&T Corporationby market value that day

Biggest rises among the 500 largest companies

Norfolk Southern (NSC)+4.5%
Heinz (HNZ)+3.5%
MeadWestvaco (W)+2.9%

Biggest falls among the 500 largest companies

Phelps Dodge (PD)-3.9%
Reynolds Metals (RLM)-3.7%
Mallinckrodt Inc -old (MALL.)-3.5%

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

‹ September 15, 1977 · Every September 16 · September 19, 1977 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.