The stock market on August 29, 1985
August 29, 1985, a Thursday. The S&P 500 rose 0.05% to close at 188.93. Of 5,713 US stocks that traded, 1,777 rose and 1,532 fell.
The S&P 500+0.05%closed at 188.93
How big a move#23,272of 24,799 trading days since 1928
$100 in the index since$4,078price only, to September 24, 2026
Stocks that rose1,777of 5,713; 1,532 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Midcon Corp (MCN) | +7.8% |
| Grumman Corp. (GQ) | +5.3% |
| RCA Corp (RCA) | +5.0% |
Biggest falls among the 500 largest companies
| Intergraph Corp (INGR.) | -6.2% |
| Homestake Mining (HM) | -4.1% |
| Deluxe Corporation (DLX) | -2.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 28, 1985 · Every August 29 · August 30, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.