manager	shares	port %	label
Ron Baron - Bamco Inc. (Baron Capital)	479,738	0.06%	Add	history
Murray Stahl - Horizon Kinetics Asset Management	30,336	0.03%	Reduce	history
Corvex Management	318,350	0.85%	New	history
Ruane, Cunniff & Goldfarb	695,720	0.95%	Reduce	history