HAMILTON, Bermuda--(BUSINESS WIRE)--Aspen Insurance Holdings Limited (“Aspen”) (NYSE:AHL) reported today net income after tax of $49.0 million, or $0.62 per diluted share, and operating income after tax of $72.2 million, or $0.99 per diluted share, for the second quarter of 2015. Chris O’Kane, Chief Executive Officer, commented, “Through the first half of the year we continued to execute on our diversified Insurance and Reinsurance strategy, achieving a 10.6% annualized operating return on equi