The stock market on April 21, 1988
April 21, 1988, a Thursday. The S&P 500 rose 0.11% to close at 256.42. Of 6,245 US stocks that traded, 1,706 rose and 2,040 fell.
The S&P 500+0.11%closed at 256.42
How big a move#21,471of 24,799 trading days since 1928
$100 in the index since$3,004price only, to September 24, 2026
Stocks that rose1,706of 6,245; 2,040 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| RadioShack (TAN) | +6.1% |
| Waste Management Inc-Old (WMX) | +5.4% |
| Illinova Corp (ILN) | +4.9% |
Biggest falls among the 500 largest companies
| Texas Instruments (TXN) | -5.6% |
| Pharmacia (PNU) | -4.3% |
| Navistar International (NAV) | -4.0% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ April 20, 1988 · Every April 21 · April 22, 1988 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.