Book value, a measure of assets minus liabilities, declined to $91.17 a share on June 30 from $98.16 as of March 31. Insurers including MetLife Inc. and American International Group Inc. have reported that their bond portfolios lost value in the period as interest rates climbed.
MetLife, the largest U.S. life insurer, reported second- quarter profit last week that beat analyst estimates as results improved in Asia. The New-York based firm has advanced about 2.6 percent since Dec. 31.