Ownership Summary

Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
ValueAct Capital Management, L.P. 6,082,646 11.07 205,246 6/30/18
The Vanguard Group, Inc. 4,935,343 8.98 75,973 6/30/18
Fidelity Management & Research Company 2,457,065 4.47 796,842 6/30/18
BlackRock Institutional Trust Company, N.A. 2,244,697 4.09 -67,648 6/30/18
Wellington Management Company, LLP 2,011,838 3.66 338,230 6/30/18
State Street Global Advisors (US) 1,848,606 3.36 -28,241 6/30/18
Brave Warrior Advisors, LLC 1,730,900 3.15 6,950 6/30/18
JP Morgan Asset Management 1,510,417 2.75 841,867 6/30/18
Parnassus Investments 1,245,000 2.27 370,000 6/30/18
Arlington Value Capital, LLC 1,002,592 1.82 193,401 6/30/18

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
Vanguard Total Stock Market Index Fund 1,180,235 2.15 5,180 8/31/18
Vanguard Mid-Cap Index Fund 1,117,196 2.03 8,384 8/31/18
Parnassus Endeavor Fund 1,000,000 1.82 495,000 6/30/18
Vanguard 500 Index Fund 878,610 1.60 6,315 8/31/18
Fidelity Balanced Fund 747,600 1.36 53,800 7/31/18
Ivy Science and Technology Fund 672,818 1.22 306,300 6/30/18
SPDR S&P 500 ETF 528,639 0.96 -3,108 8/31/18
Caisse de depot et Placement du Quebec 528,111 0.96 138,419 12/31/17
Statens Pensjonsfond Utland 488,253 0.89 167,409 12/31/17
US Bank Vanguard Institutional 500 Index Trust 461,908 0.84 -3,771 8/31/18