The other way around: he said you should only buy BRK.B if it's trading at a discount. The A shares are convertible to B (though not vice-versa), so if A is tr

The other way around: he said you should only buy BRK.B if it's trading at a discount. The A shares are convertible to B (though not vice-versa), so if A is trading at a discount it will be quickly arbed away.