Ownership Summary

Top Holders	Shares Held	% O/S	Share Change	Filing Date
The Vanguard Group, Inc.	11,725,391	10.36	70,657	3/31/19
BlackRock Institutional Trust Company, N.A.	5,501,232	4.86	-152,561	3/31/19
State Street Global Advisors (US)	4,866,164	4.30	463,800	3/31/19
Jackson Square Partners, LLC	4,246,819	3.75	-143,939	3/31/19
Fidelity Management & Research Company	3,628,026	3.21	-112,073	3/31/19
JP Morgan Asset Management	2,885,560	2.55	970,929	3/31/19
Invesco Advisers, Inc.	2,386,318	2.11	-1,051,038	3/31/19
Citadel LLC	2,362,266	2.09	-1,427,517	3/31/19
T. Rowe Price Associates, Inc.	2,183,842	1.93	1,050,604	3/31/19
Ivy Investment Management Company	2,041,268	1.80	742,713	3/31/19

Fund	Shares Held	% O/S	Share Change	Filing Date
Vanguard Total Stock Market Index Fund	3,108,494	2.75	293	6/30/19
Vanguard Mid-Cap Index Fund	2,741,523	2.42	25,658	6/30/19
Vanguard 500 Index Fund	2,215,354	1.96	12,009	6/30/19
Vanguard U.S. Growth Fund	1,289,225	1.14	--	3/31/19
SPDR S&P 500 ETF	1,229,796	1.09	18,224	6/30/19
Allianz Income And Growth	1,200,400	1.06	--	3/31/19
MFS Growth Fund	1,095,900	0.97	1,095,900	5/31/19
US Bank Vanguard Institutional 500 Index Trust	1,050,805	0.93	-13,249	6/30/19
Statens Pensjonsfond Utland	1,014,358	0.90	91,649	12/31/18
Invesco QQQ Trust	1,014,089	0.90	21,898	6/30/19

* Insider values reflect direct beneficial ownership.