Power Financial Corp. today reported higher second-quarter profit due to growth in its main insurance and mutual-fund company holdings.

Power Financial posted net income of $573 million, or 79¢ a basic share, for the three months ended June 30. That was up from $478 million, or 65¢ a share, in the same 2006 period.

The company said revenue in the quarter was $5.26 billion, down from $7.23 billion due largely to a change in the fair value of investment assets following a change in accounting procedures.

Power Financial controls insurance company Great-West Lifeco Inc. and mutual fund manager, IGM Financial Inc.

Great-West’s earnings rose 17% for the quarter, while IGM’s profit increased 14.4%.