CHICAGO–(BUSINESS WIRE)–Fitch Ratings has affirmed the ‘BBB+’ Issuer Default Rating (IDR) of OneBeacon Insurance Group, Ltd.’s (NYSE: OB) (OneBeacon) holding company and the ‘A’ Insurer Financial Strength (IFS) rating of its operating subsidiaries. Fitch has also affirmed the ‘BBB+’ IDR of White Mountains Insurance Group, Ltd. (White Mountains). OneBeacon is 76.1% owned by White Mountains. All Rating Outlooks are Stable. A full list of rating actions follows at the end of this release. KEY RA
