Ownership Summary
Top Holders
Shares Held % O/S Share Change Filing Date
Arco Capital Corporation Ltd. 2,716,795 6.3 100,000 01/19/08
New Generation Advisors Inc. 1,646,623 3.8 0 03/31/08
Barclays Global Investors N.A. 1,355,038 3.1 -226,228 12/31/07
Security Global Investors LLC 1,066,300 2.5 -53,500 12/31/07
State Street Global Advisors (US) 768,264 1.8 -83,399 12/31/07
Wells Capital Management Inc. 558,117 1.3 -811,400 12/31/07
Harris Investment Management Inc. 521,000 1.2 521,000 03/31/08
State Teachers Retirement System of Ohio 475,100 1.1 -6,100 03/31/08
Credit Suisse Securities (USA) LLC 463,790 1.1 108,806 12/31/07
TIAA-CREF 425,670 1.0 3,870 12/31/07
Ownership data based on most recent publicly available data according to Thomson Financial.