Top 10 positions in Tom Gayner's 3-31-2020 portfolio ($5.3bb)

Stock      Port. Allocation (%)
1. $BRK.A / Berkshire Hathaway,  5.7%
2. $BRK.B / Berkshire Hathaway, 5.3%
3. $KMX / CarMax 5%
4. $BAM / Brookfield Asset Management 4.8%
5. $AMZN / https://t.co/PBPM12aieS 3.6%
6. ... https://t.co/6xUpshTs9l