| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Aletheia Research & Management, Inc. | 2,428,092 | 1.43 | $95,108,363 | 30-Sep-09 | | Invesco Ltd. | 2,387,503 | 1.41 | $93,518,492 | 30-Sep-09 | | FRONTIER CAPITAL MANAGEMENT COMPANY INC | 1,421,513 | .84 | $55,680,664 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,258,441 | .74 | $49,293,133 | 30-Sep-09 | | American Century Companies, Inc. | 1,057,408 | .62 | $41,418,671 | 30-Sep-09 | | GOLDMAN SACHS GROUP INC | 963,868 | .57 | $37,754,709 | 30-Sep-09 | | SCOUT CAPITAL MANAGEMENT LLC | 946,641 | .56 | $37,079,927 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 917,624 | .54 | $35,943,332 | 30-Sep-09 | | CANNELL (PETER B.) & COMPANY INC | 895,905 | .53 | $35,092,598 | 30-Sep-09 | | THORNBURG INVESTMENT MANAGEMENT INC. | 788,114 | .46 | $30,870,425 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | AIM ENERGY FUND | 923,000 | .54 | $36,153,910 | 30-Sep-09 | | GOLDMAN SACHS GROWTH OPPORTUNITIES FUND | 699,686 | .41 | $19,416,286 | 30-Jun-09 | | KEELEY SMALL CAP VALUE FUND, INC. | 600,000 | .35 | $23,502,000 | 30-Sep-09 | | FIDELITY MID-CAP STOCK FUND | 500,000 | .29 | $19,585,000 | 30-Sep-09 | | AMERICAN CENTURY VISTA | 483,000 | .28 | $18,919,110 | 30-Sep-09 | | THORNBURG CORE GROWTH FUND | 460,500 | .27 | $12,778,875 | 30-Jun-09 | | VANGUARD MORGAN GROWTH FUND | 455,900 | .27 | $12,651,225 | 30-Jun-09 | | AIM DYNAMICS FUND | 438,017 | .26 | $17,157,125 | 30-Sep-09 | | AIM CAPITAL DEVELOPMENT FUND | 435,833 | .26 | $17,071,578 | 30-Sep-09 | | Wells Fargo Advantage Growth Fd | 360,000 | .21 | $14,101,200 | 30-Sep-09 |
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*
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Value shown is computed using the security's price on the report date given.
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