Ford's dual-class stock structure, for instance, allows the Ford family to control 40% of shareholder voting power with only about 4% of the total equity in the company. Berkshire Hathaway Inc., which has
Warren Buffett as a majority shareholder, offers a B share with 1/30th the interest of its A-class shares, but 1/200th of the voting power. Echostar Communications demonstrates the extreme power that can be had through dual-class shares: founder and CEO Charlie Ergen has about 5% of the company's stock, but his super-voting class-A shares give him a whopping 90% of the vote.