Potential Buffett heir on what may be the start of his Berkshire stake

Warren Buffett, 87, has run Berkshire since 1965 and has not signalled any plans to leave soon

Greg Abel, considered by many investors the top contender to succeed Warren Buffett as Berkshire Hathaway’s chief executive officer, reported owning about $2.1 million of the conglomerate’s stock.

Abel, who along with Ajit Jain was named a Berkshire vice-chairman and director last week, disclosed his stake a day after Jain reported a $109 million ownership stake.

The stakes were disclosed in regulatory filings.

Abel, 55, who has run the Berkshire Hathaway Energy unit, was appointed vice-chairman to oversee non-insurance operations such as the BNSF railroad, Dairy Queen ice cream, Fruit of the Loom underwear and NetJets planes.

Jain, 66, Berkshire’s top reinsurance executive and