Plenty of discourse has been swirling around Berkshire Hathaway's recent investment in energy giant ExxonMobil (XOM 0.23%). For the second quarter in a row, Warren Buffett added a Big Oil name to his portfolio, but both ExxonMobil and Suncor (SU 0.43%) are just pieces to his energy empire. In this segment, we rank the top four energy companies in Berkshire's immense portfolio.
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This segment is from Tuesday's edition of "Digging for Value," in which sector analysts Joel South and Taylor Muckerman discuss energy and materials news with host Alison Southwick. The twice-weekly show can be viewed on Tuesdays and Thursdays. It can also be found on Twitter, along with our extended coverage of the energy and materials sectors @TMFEnergy.
