manager	shares	port %	label
John Rogers - Ariel Investments	4,937,725	2.1%	Add	history
Ron Baron - Bamco Inc. (Baron Capital)	1,942,253	0.22%	Reduce	history
Thomas Gayner - Markel Group	1,327,000	0.52%		history
Vulcan Value Partners	7,495,229	4.6%	Reduce	history