| Date | Open | Close | Volume |
| 2010-03-02 | 38.36 | 40.25 | 1573800 |
| 2010-03-01 | 36.05 | 38.27 | 1582400 |
| 2010-02-26 | 35.95 | 36.01 | 559800 |
| 2010-02-25 | 35.56 | 36.04 | 439700 |
| 2010-02-24 | 35.77 | 35.71 | 420000 |
| 2010-02-23 | 36.72 | 35.86 | 1225400 |
| 2010-02-22 | 37.67 | 36.67 | 1858500 |
| 2010-02-19 | 37.47 | 37.62 | 516700 |
| 2010-02-18 | 37.30 | 37.50 | 794900 |
| 2010-02-17 | 37.26 | 37.27 | 468600 |
| 2010-02-16 | 37.60 | 37.27 | 825300 |
| 2010-02-12 | 36.48 | 37.21 | 516000 |
| 2010-02-11 | 36.18 | 36.90 | 375400 |
| 2010-02-10 | 36.41 | 36.39 | 492500 |
| 2010-02-09 | 36.98 | 36.47 | 530300 |
| 2010-02-08 | 37.57 | 36.45 | 838200 |
| 2010-02-05 | 35.44 | 37.10 | 1564200 |
| 2010-02-04 | 36.33 | 35.48 | 767300 |
| 2010-02-03 | 35.79 | 36.68 | 508200 |
| 2010-02-02 | 34.42 | 35.70 | 1378400 |
| 2010-02-01 | 33.36 | 33.82 | 244700 |
| 2010-01-29 | 33.22 | 33.29 | 689900 |
| 2010-01-28 | 33.01 | 33.05 | 419100 |
| 2010-01-27 | 33.62 | 33.12 | 968100 |
| 2010-01-26 | 34.49 | 33.67 | 867700 |
| 2010-01-25 | 34.48 | 34.49 | 566600 |
| 2010-01-22 | 35.55 | 34.34 | 538800 |
| 2010-01-21 | 36.56 | 35.54 | 487400 |
| 2010-01-20 | 37.20 | 36.40 | 403200 |
| 2010-01-19 | 36.72 | 37.34 | 495100 |
| 2010-01-15 | 38.11 | 36.55 | 691500 |
| 2010-01-14 | 38.14 | 37.98 | 257400 |
Other Companies: 02-30-2007 | TRC Companies Inc. | 06-17-2007
SCM Microsystems Inc. | 03-23-2009 | Gabelli Equity Trust, Inc.