The stock market on September 8, 1986
September 8, 1986, a Monday. The S&P 500 fell 0.93% to close at 248.14. Of 5,938 US stocks that traded, 1,162 rose and 2,716 fell.
The S&P 500-0.93%closed at 248.14
How big a move#6,674of 24,799 trading days since 1928
$100 in the index since$3,105price only, to September 24, 2026
Stocks that rose1,162of 5,938; 2,716 fell
Biggest companyInternational Business Machines Corporationby market value that day
Biggest rises among the 500 largest companies
| Con-way (CNF) | +4.9% |
| American Homes 4 Rent (AMH) | +4.4% |
| Square "d" (SQD) | +4.0% |
Biggest falls among the 500 largest companies
| I M S International Inc (IMSI.) | -8.0% |
| Marion Merrell Dow Inc (MKC) | -7.9% |
| Genentech Inc (DNA) | -7.7% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
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Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.