manager	shares	port %	label
John Rogers - Ariel Investments	5,088,397	2.2%	Add	history
Ron Baron - Bamco Inc. (Baron Capital)	1,867,253	0.21%	Reduce	history
Thomas Gayner - Markel Group	1,327,000	0.51%		history
Vulcan Value Partners	6,787,368	4.9%	Reduce	history