The stock market on August 23, 1985
August 23, 1985, a Friday. The S&P 500 fell 0.10% to close at 187.17. Of 5,713 US stocks that traded, 1,658 rose and 1,652 fell.
The S&P 500-0.10%closed at 187.17
How big a move#21,788of 24,799 trading days since 1928
$100 in the index since$4,116price only, to September 24, 2026
Stocks that rose1,658of 5,713; 1,652 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for4stocks
Biggest rises among the 500 largest companies
| Gould Inc (GLD) | +6.0% |
| Rhone-Poulenc Rorer (RPR) | +5.7% |
| Mca Inc. (MCA) | +5.3% |
Biggest falls among the 500 largest companies
| Tektronix (TEK) | -7.6% |
| Intergraph Corp (INGR.) | -5.2% |
| Intl. Flavors & Frag. (IFF) | -3.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 22, 1985 · Every August 23 · August 26, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.