The stock market on December 12, 1985
December 12, 1985, a Thursday. The S&P 500 rose 0.20% to close at 206.73. Of 5,749 US stocks that traded, 2,091 rose and 1,581 fell.
The S&P 500+0.20%closed at 206.73
How big a move#18,937of 24,799 trading days since 1928
$100 in the index since$3,727price only, to September 24, 2026
Stocks that rose2,091of 5,749; 1,581 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for4stocks
Biggest rises among the 500 largest companies
| Freeport-McMoran (FTX) | +14.1% |
| Puget Energy Inc (PSD) | +10.7% |
| Chesebrough Ponds (CBM) | +10.6% |
Biggest falls among the 500 largest companies
| RCA Corp (RCA) | -6.7% |
| Petrie Stores Liquidation Tr | -4.4% |
| Mca Inc. (MCA) | -4.4% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ December 11, 1985 · Every December 12 · December 13, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.