NYSE: WTM

White Mountains Insurance Group Ltd Stock Ownership - Who owns White Mountains Insurance Group?

White Mountains Insurance Group (NYSE: WTM) is owned by 90.10% institutional shareholders, 56.40% White Mountains Insurance Group insiders, and 0.00% retail investors. John Joseph Byrne is the largest individual White Mountains Insurance Group shareholder, owning 789,535.00 shares representing 30.66% of the company. John Joseph Byrne's White Mountains Insurance Group shares are currently valued at $1.35B.

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