Fact checked by Vikki VelasquezWarren Buffett’s Berkshire Hathaway Inc. (BRK.A, BRK.B) is the single largest private holder of U.S. Treasury bills, surpassing even the Federal Reserve’s own holdings.

Berkshire Hathaway (NYSE: BRK.A) (NYSE: BRK.B) and its chief executive officer, legendary investor Warren Buffett, continued to shun stocks in Q2. Buffett has long been considered one of the world's best investors, but he's been selling a lot more stocks than buying recently.

Berkshire Hathaway has resumed acquiring shares of Warren Buffett's favorite media stock. Other insider buyers are focused on three biotech stocks.