Investment gains and stronger U.S. group disability results helped Unum Group Corp. increase profits during the second quarter.

Here is a summary of the latest insurance industry earnings news:

Unum Group Corp., Chattanooga, Tenn.

2 Q 2008 Results

NET INCOME: $240 million

REVENUE: $2.8 billion

NET REALIZED CAPITAL CHANGE: $26 million gain

2 Q 2007 Results

NET INCOME: $154 million

REVENUE: $2.7 billion

NET REALIZED CAPITAL CHANGE: $10 million gain

- Results include a $16 million after-tax net gain “resulting from changes in the fair value of embedded derivatives associated with certain modified coinsurance arrangements,” Unum says.

- Unum US is reporting $176 million in operating income, up from $92 million in operating income for the second quarter of 2007.

- U.S. group disability operating income increased to $46 million, up from an operating loss of $15 million. Unum notes that, excluding special charges, U.S. group disability operations would have reported $51 million in operating income for the second quarter of 2007. But the ratio of benefits costs to premiums fell to 90.5%, from 92.7%, Unum says.

- The Colonial Life worksite sales unit increased operating income 5.1%, to $68 million, and sales 3.3%, to $81 million. The number of new accounts increased 13%, but the dollar value of growth was slow because the average new case size declined, Unum says.

Prudential Financial Inc., Newark, N.J.

2 Q 2008 Results

NET INCOME: $590 million

REVENUE: $7.7 billion

REALIZED INVESTMENT CHANGE: $486 million loss

FINANCIAL SERVICES NET INCOME: $575 million

2 Q 2007 Results

NET INCOME: $846 million

REVENUE: $8.4 billion

REALIZED INVESTMENT CHANGE: $34 million gain

FINANCIAL SERVICES NET INCOME: $835 million

- Financial services unit results, which excludes results from Prudential’s closed-block business, include $123 million in losses on trading account assets supporting insurance liabilities, compared with $108 million in trading account asset losses for the second quarter of 2007.

- Individual life sales increased to $132 million, from $121 million.

- Net annuity sales increased to $518 million, from $464 million.

- Annualized premiums from new group disability cases fell to $17 million, from $26 million, but group life sales increased to $30 million, from $26 million.

American Equity Investment Life Holding Company, West Des Moines, Iowa

2 Q 2008 Results

NET INCOME: $4.7 million

REVENUE: $113 million

NET INVESTMENT INCOME: $202 million

REALIZED INVESTMENT CHANGE: $282 million loss

DERIVATIVES FAIR VALUE CHANGE: $73 million loss

2 Q 2007 Results

NET INCOME: $21 million

REVENUE: $289 million

NET INVESTMENT INCOME: $176 million

REALIZED INVESTMENT CHANGE: $282 million loss

DERIVATIVES FAIR VALUE CHANGE: $99 million gain

- Annuity sales increased 4%, to $648 million