Underfolio

Every trading day › 1973

The stock market on September 17, 1973

September 17, 1973, a Monday. The S&P 500 fell 0.28% to close at 104.15. Of 5,005 US stocks that traded, 1,645 rose and 1,155 fell.

The S&P 500-0.28%closed at 104.15
How big a move#17,050of 24,799 trading days since 1928
$100 in the index since$7,397price only, to September 24, 2026
Stocks that rose1,645of 5,005; 1,155 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock

Biggest rises among the 500 largest companies

Marinduque Mng & Indl -cl B+11.6%
H.F. Ahmanson (AHM)+10.2%
Mallinckrodt Inc -old (MALL.)+9.2%

Biggest falls among the 500 largest companies

International Business Machines Corporation (IBM)-8.7%
Dome Petroleum Ltd (DMP)-7.7%
Pacific Petroleums Ltd (PP)-6.7%

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

‹ September 14, 1973 · Every September 17 · September 18, 1973 ›

Ask the Lab what came after a day like this

History, not advice. How these numbers are made.