The stock market on September 30, 1988
September 30, 1988, a Friday. The S&P 500 fell 0.25% to close at 271.91. Of 6,143 US stocks that traded, 2,158 rose and 1,519 fell.
The S&P 500-0.25%closed at 271.91
How big a move#17,740of 24,799 trading days since 1928
$100 in the index since$2,833price only, to September 24, 2026
Stocks that rose2,158of 6,143; 1,519 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for5stocks
Biggest rises among the 500 largest companies
| Dover (DOV) | +5.6% |
| Ethyl (NEU) | +4.7% |
| Broadwing Inc (BRW) | +4.5% |
Biggest falls among the 500 largest companies
| Genentech Inc (DNA) | -7.0% |
| Transitional Hospitals Cp (THY) | -6.7% |
| Fluor (FLR) | -5.1% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 29, 1988 · Every September 30 · October 3, 1988 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.