manager	shares	port %	label
Murray Stahl - Horizon Kinetics Asset Management	2,134	<0.01%	Reduce	history
Warren Buffett - Berkshire Hathaway	4,986,588	0.17%		history
Valueact Capital - Valueact Holdings	785,119	1.4%	Reduce	history
Corvex Management	1,005,434	3.1%		history