OMAHA, Neb.--(BUSINESS WIRE)--Berkshire Hathaway Inc. (BRK.A; BRK.B) – Berkshire’s operating results for the second quarter and first six months of 2015 are summarized in the following paragraphs. However, we urge investors and reporters to read our 10-Q, which has been posted at www.berkshirehathaway.com. The limited information that follows in this press release is not adequate for making an informed investment judgment. Earnings of Berkshire Hathaway Inc. and its consolidated subsidiaries fo