GREENWICH, Conn.--(BUSINESS WIRE)--W. R. Berkley Corporation (NYSE: WRB) will release its second quarter 2015 earnings after the market closes on Monday, July 27, 2015. A copy of the earnings release will be available on the Company’s website at www.wrberkley.com. The Company has scheduled its quarterly conference call with analysts and investors to discuss its earnings and other information on Monday, July 27, 2015 at 5:00 p.m. eastern time. A live audio webcast of the conference call may be a