The stock market on May 18, 1984
May 18, 1984, a Friday. The S&P 500 fell 0.50% to close at 155.78. Of 5,757 US stocks that traded, 1,063 rose and 2,173 fell.
The S&P 500-0.50%closed at 155.78
How big a move#12,364of 24,799 trading days since 1928
$100 in the index since$4,946price only, to September 24, 2026
Stocks that rose1,063of 5,757; 2,173 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for3stocks
Biggest rises among the 500 largest companies
| Nielsen (A.C.) Co -cl A (NIELA) | +44.2% |
| Interfirst Corp (IFC) | +6.5% |
| Financial Corp Of America | +3.2% |
Biggest falls among the 500 largest companies
| KeySpan (KSE) | -7.0% |
| Searle G D & (SRL) | -5.6% |
| CNA Financial Corporation (CNA) | -5.0% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ May 17, 1984 · Every May 18 · May 21, 1984 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.