White Mountains Insurance Group Ltd

WTMNYSE
$2053.15
-22.84-1.1%
At close: Sep 10, 5:00 PM EST
$2057.00
-18.99-0.91%
Pre-Market: 4:12 AM EST

White Mountains Insurance Ownership & Insider Activity

White Mountains Insurance (WTM) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 18.9% of shares outstanding. Institutional investors hold 63.6%.

Shares Outstanding

2.387M

Shares Float

2.313M

Insider Shares Owned

450.092K

Insider % Owned

18.9%

Institutional Shares Held

1.519M

Institutional % Held

63.6%

Ownership Breakdown

Net Insider Activity by Month

White Mountains Insurance Insider Transactions (Last 6 Months)

No insider filings in the last 6 months.

Congressional Trading Activity

See all government trades
DateMemberPartyChamberActionAmount
Jun 23, 2025French HillRHousePurchase$50,001 - $100,000