The stock market on September 20, 1989
September 20, 1989, a Wednesday. The S&P 500 fell 0.02% to close at 346.47. Of 5,892 US stocks that traded, 1,628 rose and 1,859 fell.
The S&P 500-0.02%closed at 346.47
How big a move#24,010of 24,799 trading days since 1928
$100 in the index since$2,224price only, to September 24, 2026
Stocks that rose1,628of 5,892; 1,859 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for5stocks
Biggest rises among the 500 largest companies
| Homestake Mining (HM) | +5.0% |
| Bank One Corp. (ONE) | +4.6% |
| Chemical Banking Corporation (CMB) | +4.3% |
Biggest falls among the 500 largest companies
| U.S. Bancorp (USB) | -4.7% |
| Turner Broadcasting (TBS.B) | -4.3% |
| Square "d" (SQD) | -4.0% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 19, 1989 · Every September 20 · September 21, 1989 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.