The stock market on September 21, 1988
September 21, 1988, a Wednesday. The S&P 500 rose 0.16% to close at 270.16. Of 6,156 US stocks that traded, 1,763 rose and 1,768 fell.
The S&P 500+0.16%closed at 270.16
How big a move#20,214of 24,799 trading days since 1928
$100 in the index since$2,852price only, to September 24, 2026
Stocks that rose1,763of 6,156; 1,768 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Oracle (ORCL) | +8.1% |
| Rhone-Poulenc Rorer (RPR) | +7.7% |
| Viad Corp (VVI) | +6.0% |
Biggest falls among the 500 largest companies
| Navistar International (NAV) | -4.8% |
| Amerada Hess (AHC) | -3.5% |
| Baker Hughes (BKR) | -2.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 20, 1988 · Every September 21 · September 22, 1988 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.