The stock market on May 12, 1988
May 12, 1988, a Thursday. The S&P 500 rose 0.21% to close at 253.85. Of 6,227 US stocks that traded, 1,993 rose and 1,683 fell.
The S&P 500+0.21%closed at 253.85
How big a move#18,670of 24,799 trading days since 1928
$100 in the index since$3,035price only, to September 24, 2026
Stocks that rose1,993of 6,227; 1,683 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| KeySpan (KSE) | +6.3% |
| Louisiana Land & Exploration (LLX.) | +5.0% |
| Advanced Micro Devices (AMD) | +4.5% |
Biggest falls among the 500 largest companies
| Merrill Lynch (MER) | -4.7% |
| American Medical Int'l (AMI) | -3.6% |
| Becton Dickinson (BDX) | -3.0% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ May 11, 1988 · Every May 12 · May 13, 1988 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.