Updated: May 18, 2026

Michael Oreilly

MKLMARKEL GROUP INC.SEC CIK: 0001192729
Estimated Net Worth
$16 Million
Last Updated: May 18, 2026 03:54 PM EST

Transaction Summary

Total Transactions82
Buy-Sell Ratio0.74
Buy Transactions34
Sell Transactions46

Transaction Volume

Total Volume$63.33M
Net Volume-$41.34M
Buy Volume$11M
Sell Volume$52.34M

Trade Analysis

AVG Trade Size$772.35K
Largest Trade$7.91M
Most Active MonthMay
Most Active Year2007

Trading Sentiment

OverallBearish
Recent TradeBuying
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

Michael Oreilly has an estimated net worth of $16 Million. This is based on reported shares across multiple companies, which include MARKEL GROUP INC., CHUBB CORP, and ALTERRA CAPITAL HOLDINGS Ltd.



2005 was Michael Oreilly's most active year for acquiring shares with 13 total transactions. Michael Oreilly's most active month to acquire stocks was the month of April. 2007 was Michael Oreilly's most active year for disposing of shares, totalling 108 transactions. Michael Oreilly's most active month to dispose stocks was the month of January. 2007 saw Michael Oreilly paying a total of $11,176,764.07 for 272,946 shares, this is the most they've acquired in one year. In 2004 Michael Oreilly cashed out on 317,191.5 shares for a total of $20,176,918.93, their largest year based on trade value.

Holdings & Transactions

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