Updated: May 19, 2026

George Manning Rountree

WTMWHITE MOUNTAINS INSURANCE GROUP LTDSEC CIK: 0001457475
Estimated Net Worth
$69.6 Million16.5%vs Last Year
Last Updated: May 19, 2026 11:37 PM EST

Transaction Summary

Total Transactions36
Buy-Sell Ratio1.00
Buy Transactions17
Sell Transactions17

Transaction Volume

Total Volume$28.49M
Net Volume-$28.49M
Buy Volume$0
Sell Volume$28.49M

Trade Analysis

AVG Trade Size$791.36K
Largest Trade$10.25M
Most Active MonthFeb
Most Active Year2025

Trading Sentiment

OverallBearish
Recent TradeSelling
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

George Manning Rountree has an estimated net worth of $69.6 Million. This is based on reported shares across multiple companies, which include WHITE MOUNTAINS INSURANCE GROUP LTD, and OneBeacon Insurance Group, Ltd..



2018 was George Manning Rountree's most active year for acquiring shares with 3 total transactions. George Manning Rountree's most active month to acquire stocks was the month of January. 2015 was George Manning Rountree's most active year for disposing of shares, totalling 21 transactions. George Manning Rountree's most active month to dispose stocks was the month of August. 2009 saw George Manning Rountree paying a total of $0.00 for 3,600 shares, this is the most they've acquired in one year. In 2025 George Manning Rountree cashed out on 6,067 shares for a total of $12,325,379.02, their largest year based on trade value.

Holdings & Transactions

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