Ownership Summary

Ownership Summary

Top Holders

Holder Shares Held % O/S Share Change Filing Date
ValueAct Capital Management, L.P. 5,207,646 9.83 -875,000 12/31/18
The Vanguard Group, Inc. 5,049,876 9.53 71,995 12/31/18
Fidelity Management & Research Company 2,969,814 5.60 557,980 12/31/18
BlackRock Institutional Trust Company, N.A. 2,323,816 4.38 98,136 12/31/18
State Street Global Advisors (US) 1,936,708 3.65 -24,133 12/31/18
Brave Warrior Advisors, LLC 1,742,653 3.29 10,130 12/31/18
Arlington Value Capital, LLC 1,476,049 2.79 387,070 12/31/18
Boston Partners 1,286,032 2.43 269,436 12/31/18
Parnassus Investments 1,251,925 2.36 6,925 12/31/18
Anderson (Bruce K) 842,998 1.59 993 6/25/18

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
Vanguard Total Stock Market Index Fund 1,241,186 2.34 8,346 2/28/19
Vanguard Mid-Cap Index Fund 1,101,326 2.08 -6,244 2/28/19
Parnassus Endeavor Fund 1,000,000 1.89 -- 12/31/18
Vanguard 500 Index Fund 894,724 1.69 7,714 2/28/19
Fidelity Balanced Fund 781,900 1.48 5,800 1/31/19
Ivy Science and Technology Fund 638,718 1.21 -34,100 12/31/18
Caisse de depot et Placement du Quebec 528,111 1.00 138,419 12/31/17
SPDR S&P 500 ETF 526,231 0.99 -11,648 2/28/19
Statens Pensjonsfond Utland 488,253 0.92 167,409 12/31/17
US Bank Vanguard Institutional 500 Index Trust 444,216 0.84 190 2/28/19