Underfolio

Every trading day › 1971

The stock market on April 15, 1971

April 15, 1971, a Thursday. The S&P 500 rose 0.15% to close at 103.52. Of 2,308 US stocks that traded, 944 rose and 972 fell.

The S&P 500+0.15%closed at 103.52
How big a move#20,585of 24,799 trading days since 1928
$100 in the index since$7,442price only, to September 24, 2026
Stocks that rose944of 2,308; 972 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Whittaker Corp (WKR)+7.3%
Uniroyal Inc (R)+6.9%
Petrie Stores Liquidation Tr+5.4%

Biggest falls among the 500 largest companies

Intl. Flavors & Frag. (IFF)-5.6%
H&R Block (HRB)-4.8%
American Standard (TT)-4.5%

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

‹ April 14, 1971 · Every April 15 · April 16, 1971 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.