It’s the copyright for the entire website. There’s a letter to shareholders written March 14, 1978 - https://www.berkshirehathaway.com/letters/1977.html https:/

It’s the copyright for the entire website. There’s a letter to shareholders written March 14, 1978 - https://www.berkshirehathaway.com/letters/1977.html https://www.berkshirehathaway.com/letters/1977.html