HAMILTON, Bermuda, Aug. 7, 2024 /PRNewswire/ -- White Mountains Insurance Group, Ltd. (NYSE: WTM) reported book value per share of $1,722 and adjusted book value per share of $1,777 as of June 30, 2024. Book value per share and adjusted book value per share both decreased 1% in the second quarter of 2024 and increased 4% in the first six months of 2024, including dividends. Manning Rountree, CEO, commented, "ABVPS was down 1% in the quarter, due primarily to our investment in MediaAlpha. Excluding MediaAlph ...