The stock market on April 9, 1985
April 9, 1985, a Tuesday. The S&P 500 rose 0.10% to close at 178.21. Of 5,718 US stocks that traded, 1,520 rose and 1,754 fell.
The S&P 500+0.10%closed at 178.21
How big a move#21,795of 24,799 trading days since 1928
$100 in the index since$4,323price only, to September 24, 2026
Stocks that rose1,520of 5,718; 1,754 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Tandem Computers Inc (TDM.) | +11.0% |
| Maxus Energy (MXS) | +6.5% |
| Signal Companies (SGN) | +5.9% |
Biggest falls among the 500 largest companies
| CVS Health (CVS) | -3.7% |
| E-systems Inc. (ESY) | -3.7% |
| Ltv Corp (LTVCQ) | -3.5% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ April 8, 1985 · Every April 9 · April 10, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.