|Traded as||NYSE: WTM|
Russell 1000 Component
White Mountains Insurance Group (NYSE: WTM) is a diversified insurance and related financial services holding company based in Hamilton, Bermuda. Redomiciled from Delaware, United States, on October 25, 1999, the company conducts most of its business through its insurance subsidiaries and other affiliates.
White Mountain Insurance Group began in the early 1980s by Jack Byrne, the man recruited by American Express to turn around troubled property and casualty insurer Fireman's Fund. When Byrne took Fireman's Fund public in 1985, it was the largest IPO in American history, and the insurer was sold to Allianz six years later. Upon completion of the Fireman's Fund sale in 1991, the remaining holding company and residual assets formed the starting point for the future White Mountains.
In August 2019, the company reported reported book value per share of $987.