More on Aspen Insurance results

• Q1 operating income per share of $1.39 vs. $1.66 one year ago.
• Book value per share of $46.02 up 2% from the start of the year. Today's close was $48.21.
• Total gross written premiums of $919.2M up 7.4% Y/Y.
• Insurance gross written premiums of $434.4M up 13.3% Y/Y. Combined ratio of 93.5% improves from 95.1%. This year's combined ratio includes 1.7 percentage points of pretax catastrophe losses, the same as last year.
• Reinsurance gross written premiums of $484.8M up 2.7% Y/Y. Combined ratio of 76.7% vs. 72.6% a year ago. This year's ratio included 3.1 percentage points of pretax catastrophe losses vs. 2.1 a year ago.
• Total return on investment portfolio of 1.1% for the quarter. Book yield of 2.56% down nine basis points from the start of the year.
• Operating ROE is expected to be 11% in 2015.
• Earnings call tomorrow at 8 ET
• Previously: Aspen Insurance Holdings beats by $0.01, misses on revenue (April 22)
• AHL flat after hours