May 2 (Reuters) - Intact Financial Corp IFC.TO
* Onebeacon Insurance Group Ltd says book value per share of $10.91, reflecting an increase of 2.8% for Q1 of 2017, including dividends
* Onebeacon Insurance Group Ltd says net written premiums were $256.9 million in Q1 of 2017, a decrease of 8.3% from Q1 of 2016 Source text for Eikon: ID:nPn89m3JGa Further company coverage: IFC.TO