Underfolio

Every trading day › 1971

The stock market on April 16, 1971

April 16, 1971, a Friday. The S&P 500 fell 0.03% to close at 103.49. Of 2,308 US stocks that traded, 912 rose and 952 fell.

The S&P 500-0.03%closed at 103.49
How big a move#23,886of 24,799 trading days since 1928
$100 in the index since$7,444price only, to September 24, 2026
Stocks that rose912of 2,308; 952 fell
Biggest companyInternational Business Machines Corporationby market value that day

Biggest rises among the 500 largest companies

Whittaker Corp (WKR)+7.8%
Reynolds Metals (RLM)+7.6%
Arlen Corp (ARRD)+6.9%

Biggest falls among the 500 largest companies

Ampex Corp (APX)-6.7%
Hca Hosp Cp Of Amer -cl A (HCA)-5.2%
Flagstar Corp-4.8%

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

‹ April 15, 1971 · Every April 16 · April 19, 1971 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.