The stock market on August 27, 1985
August 27, 1985, a Tuesday. The S&P 500 rose 0.42% to close at 188.10. Of 5,712 US stocks that traded, 1,841 rose and 1,541 fell.
The S&P 500+0.42%closed at 188.10
How big a move#13,911of 24,799 trading days since 1928
$100 in the index since$4,096price only, to September 24, 2026
Stocks that rose1,841of 5,712; 1,541 fell
Biggest companyInternational Business Machines Corporationby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Mesa Inc (MXP.) | +6.6% |
| Warner Communications (WCI) | +5.0% |
| Raytheon (RTN) | +5.0% |
Biggest falls among the 500 largest companies
| KeySpan (KSE) | -9.0% |
| American Airlines Group (AMR) | -4.5% |
| Revlon Inc -old | -3.5% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ August 26, 1985 · Every August 27 · August 28, 1985 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.