HAMILTON, Bermuda, Nov. 6, 2024 /PRNewswire/ -- White Mountains Insurance Group, Ltd. (NYSE: WTM) reported book value per share of $1,795 and adjusted book value per share of $1,883 as of September 30, 2024.  Book value per share and adjusted book value per share increased 4% and 6% in the third quarter of 2024 and 9% and 11% in the first nine months of 2024, including dividends. As of July 1, 2024, White Mountains no longer consolidates BAM.  As of September 30, 2024, the BAM surplus notes were fair valued ...