The stock market on September 12, 2011
September 12, 2011, a Monday. The S&P 500 rose 0.70% to close at 1162.27. Of 4,020 US stocks that traded, 2,214 rose and 1,579 fell.
The S&P 500+0.70%closed at 1162.27
How big a move#9,327of 24,799 trading days since 1928
$100 in the index since$663price only, to September 24, 2026
Stocks that rose2,214of 4,020; 1,579 fell
Biggest companyAppleby market value that day
Biggest rises among the 500 largest companies
| Micron Technology (MU) | +5.3% |
| Autodesk, Inc. (ADSK) | +5.2% |
| Marvell Technology Group Ltd. (MRVL) | +5.1% |
Biggest falls among the 500 largest companies
| Alpha Natural Resources (ANR) | -3.6% |
| Valhi, Inc. (VHI) | -3.6% |
| Kosmos Energy Ltd. (KOS) | -3.6% |
Stock moves count dividends; the index is price only. Market values after 2024 are estimates.
‹ September 9, 2011 · Every September 12 · September 13, 2011 ›
Ask the Lab what came after a day like thisHistory, not advice. How these numbers are made.