The biggest immediate changes will be that different people will be in control of the company's stock portfolio, and Abel will have power over Berkshire's $344 billion cash hoard. However, portfolio managers Ted Weschler and Todd Combs have been managing more of Berkshire's investments as the years have progressed.

Berkshire Hathaway Inc. (NYSE:BRK-B) is one of the stocks Jim Cramer recently discussed. When a caller inquired about it, Cramer was quick to say: “Buy more, buy more. I’m just, I’m not buying this idea that this thing is Warren Buffett and nothing else.

Warren Buffett’s Berkshire Hathaway revealed a position in embattled healthcare giant UnitedHealth Group while showing smaller stakes in longtime holdings Apple and Bank of America, according to a regulatory filing Thursday.