White Mountains Stock Rockets +10% on $1.75B Bamboo Deal – What Investors Need to Know
White Mountains shares surged 10.6% to $1,841.34 on Oct. 3, 2025, after announcing a $1.75 billion sale of a 77% stake in Bamboo Ide8 to CVC Capital Partners. The deal will bring WTM about $840 million in cash and boost book value per share by $310. WTM will retain roughly 15% of Bamboo. The move contrasts with a recent 2.7% drop in the S&P Insurance Index.
