Ownership Summary

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Top Holders
 Shares Held% O/SShare ChangeFiling Date
Wellington Management Company, LLP11,732,9967.31,585,35109/30/15
Capital World Investors9,655,7786.0-856,39109/30/15
The Vanguard Group, Inc.9,042,5035.6140,15509/30/15
Viking Global Investors LP8,962,1865.62,298,89910/20/15
State Street Global Advisors (US)8,342,0305.2310,80109/30/15
SPO Partners & Co.7,296,5644.5-54,32509/30/15
T. Rowe Price Associates, Inc.6,481,9484.0-4,173,26009/30/15
BlackRock Institutional Trust Company, N.A.6,382,2794.034,93009/30/15
Fidelity Management & Research Company4,475,5492.8351,63109/30/15
The Baupost Group, L.L.C.4,137,0002.672,00009/30/15
Ownership data based on most recent publicly available data according to Thomson Reuters.

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