The stock market on September 21, 2015
September 21, 2015, a Monday. The S&P 500 rose 0.46% to close at 1966.97. Of 3,971 US stocks that traded, 1,972 rose and 1,816 fell.
The S&P 500+0.46%closed at 1966.97
How big a move#13,252of 24,799 trading days since 1928
$100 in the index since$392price only, to September 24, 2026
Stocks that rose1,972of 3,971; 1,816 fell
Biggest companyAppleby market value that day
Last day of trading for2stocks
Biggest rises among the 500 largest companies
| Westlake Chemical (WLK) | +6.9% |
| Alaska Air Group (ALK) | +4.3% |
| PayPal Holdings, Inc. (PYPL) | +4.0% |
Biggest falls among the 500 largest companies
| Alnylam Pharmaceuticals, Inc. (ALNY) | -8.7% |
| BioMarin Pharmaceutical Inc. (BMRN) | -6.6% |
| Incyte Corporation (INCY) | -5.8% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 18, 2015 · Every September 21 · September 22, 2015 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.