2017-Q4

Company	Shares change	Shares owned end of quarter	Transaction type	Price range
Alphabet Inc. US02079K1079	+1.4M	11M	BUY	$2.03–$2.27
Alphabet Inc. US02079K3059	-83K	2.3M	SELL	$2.05–$2.29
AMETEK, Inc. US0311001004	-5.3K	683K	SELL	$56.33–$61.21
Berkshire Hathaway Inc. US0846707026	+8.6K	716K	BUY	$152.61–$170.04
CarMax, Inc. US1431301027	+98K	1M	BUY	$54.07–$65.35
The Walt Disney Company US2546871060	-85K	267K	SELL	$81.96–$94.94
HEICO Corporation US4228062083	-19K	719K	SELL
JPMorgan Chase & Co. US46625H1005	+21	15K	BUY	$80.72–$91.40
LKQ Corporation US5018892084	-183K	917K	SELL	$30.71–$34.96
Markel Corporation US5705351048	+270	31K	BUY	$891.28–$962.14
Mohawk Industries, Inc. US6081901042	-2.7K	104K	SELL	$212.61–$241.07
O'Reilly Automotive, Inc. US67103H1077	-7.2K	1.4M	SELL	$11.39–$14.11
The TJX Companies, Inc. US8725401090	-4.1K	4.3K	SELL	$28.44–$32.65
Union Pacific Corporation US9078181081	-2.2K	268K	SELL	$93.46–$114.12
Visa Inc. US92826C8394	-4.3K	335K	SELL	$89.56–$97.20
Wells Fargo & Company US9497461015	-198K	334K	SELL	$45.14–$51.93
Fortune Brands Home & Security, Inc. US34964C1062	-11K	360K	SELL	$46.13–$50.04