Ownership Summary

Top Holders Shares Held % O/S Share Change Filing Date
The Vanguard Group, Inc. 11,654,734 10.30 262,916 12/31/18
BlackRock Institutional Trust Company, N.A. 5,653,793 5.00 266,130 12/31/18
State Street Global Advisors (US) 4,402,364 3.89 280,272 12/31/18
Jackson Square Partners, LLC 4,390,758 3.88 399,682 12/31/18
Citadel LLC 3,789,783 3.35 1,870,476 12/31/18
Fidelity Management & Research Company 3,740,099 3.31 277,285 12/31/18
Invesco Advisers, Inc. 3,437,356 3.04 924,761 12/31/18
Allianz Global Investors U.S. LLC 2,281,245 2.02 132,837 12/31/18
JP Morgan Asset Management 1,914,631 1.69 97,854 12/31/18
Macquarie Investment Management 1,783,505 1.58 -150,599 12/31/18
Fund Shares Held % O/S Share Change Filing Date
Vanguard Total Stock Market Index Fund 3,048,511 2.69 9,826 2/28/19
Vanguard Mid-Cap Index Fund 2,708,149 2.39 -16,762 2/28/19
Vanguard 500 Index Fund 2,173,846 1.92 14,785 2/28/19
Vanguard U.S. Growth Fund 1,289,225 1.14 175,431 12/31/18
SPDR S&P 500 ETF 1,262,504 1.12 -28,288 2/28/19
US Bank Vanguard Institutional 500 Index Trust 1,082,531 0.96 3,363 2/28/19
Invesco QQQ Trust 994,836 0.88 -9,415 2/28/19
Invesco American Franchise Fund 930,594 0.82 -- 1/31/19
Statens Pensjonsfond Utland 922,709 0.82 255,479 12/31/17
Delaware U.S. Growth Fund 865,553 0.76 13,065 12/31/18

* Insider values reflect direct beneficial ownership.

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