The stock market on August 12, 1985
August 12, 1985, a Monday. The S&P 500 fell 0.37% to close at 187.63. Of 5,715 US stocks that traded, 1,258 rose and 2,067 fell.
The S&P 500-0.37%closed at 187.63
How big a move#15,070of 24,799 trading days since 1928
$100 in the index since$4,106price only, to September 24, 2026
Stocks that rose1,258of 5,715; 2,067 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| United Energy Resources | +10.4% |
| Grumman Corp. (GQ) | +10.0% |
| Pan Am Corp | +6.2% |
Biggest falls among the 500 largest companies
| Providian Corp (PVN) | -4.0% |
| Advanced Micro Devices (AMD) | -3.9% |
| Union Carbide | -3.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 9, 1985 · Every August 12 · August 13, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.