Publicly-traded US stocks owned by Warren Buffet's trading Company, Berkshire Hathaway, are reported to the Securities and Exchange commission, according to CNBC. Not only is Buffet the largest shareholder of Berkshire Hathaway, but he is also the CEO.
The holdings of Berkshire Hathaway are essentially the direct holdings of Warren Buffet, as the overwhelming majority of his projected wealth is directly tied to the value of his Berkshire Hathaway stock holdings. Additionally, Warren Buffet is directly responsible for the management of the Berkshire Hathaway portfolio. This includes the decision to add or remove specific stocks from the portfolio as well as determining the specific number of stocks that Berkshire Hathaway buys or sells.