Berkshire owns a collection of competitively advantaged businesses Berkshire Hathaway is a holding company that owns a diverse group of subsidiaries, most of which were hand selected by CEO Warren Buffett due to their sustainable economic moats and excellent leadership. The most consequential holdings are its insurance businesses, which generate investable capital in the form policy premiums that have not yet been paid out in claims. Investors can confidently buy Berkshire stock whenever Warren Buffett repu ...