The stock market on October 12, 2017
October 12, 2017, a Thursday. The S&P 500 fell 0.17% to close at 2550.93. Of 3,754 US stocks that traded, 1,453 rose and 2,079 fell.
The S&P 500-0.17%closed at 2550.93
How big a move#19,921of 24,799 trading days since 1928
$100 in the index since$302price only, to September 24, 2026
Stocks that rose1,453of 3,754; 2,079 fell
Biggest companyAppleby market value that day
Last day of trading for1stock
Biggest rises among the 500 largest companies
| Twitter (TWTR) | +4.1% |
| Computer Sciences (DXC) | +4.0% |
| Snap Inc. (SNAP) | +3.6% |
Biggest falls among the 500 largest companies
| MercadoLibre, Inc. (MELI) | -10.3% |
| Ulta Beauty (ULTA) | -8.5% |
| PG&E Corp. (PCG) | -6.7% |
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.