White Mountains Insurance Group Ltd. swung to a second-quarter profit and said it expects strong performance for the foreseeable future.

The Bermuda-based company administered from Hanover, New Hampshire, posted second-quarter net income of $84.4 million, or $4.77 a share, compared with a loss from continuing operations last year of $13.6 million, or $1.68 a share.

Its second-quarter revenue was $941.1 million, compared with $1.01 billion last year.

"With insurance markets remaining disciplined, we expect strong performance to continue for the foreseeable future," the company said in a statement.

Book value was $281 a share.

The company's chief executive officer, Ray Barrette, said: "We are building shareholder value at a good clip in every one of our businesses: insurance, reinsurance and investments. With insurance markets remaining disciplined, we expect strong performance to continue for the foreseeable future."