Why insider trading matters?

Numerous studies have examined whether there is evidence that U.S. insiders systematically trade on private information despite the legal deterrence. The consensus appears to be that insider purchases (but not sales) tend to be followed by positive abnormal stock price performance, particularly for small growth stocks.

- Prof. B. Espen Eckbo, Dartmouth College
MARKEL CORP (MKL)
Sector: Financial Services; Industry: Insurance—Property & Casualty

Markel Corporation, a diverse financial holding company, markets and underwrites specialty insurance products in the United States, the United Kingdom, Canada, and internationally. The company's Reinsurance segment offers general liability, professional liability, workers' compensation, medical malpractice, and environmental impairment liability; property treaty products for catastrophe, per risk, and retrocessional exposures; and specialty treaty reinsurance products comprising structured and whole turnover credit, political risk, mortgage and contract, and commercial surety reinsurance programs. This segment also provides healthcare, consulting, and others types of services to businesses and consumers, including management and technology consulting, behavioral healthcare, and retail intelligence. The company's Other segment operates as an insurance and investment fund manager offering a range of investment products, including insurance-linked securities, catastrophe bonds, insurance swaps, and weather derivatives; and program services. Markel Corporation was founded in 1930 and is headquartered in Glen Allen, Virginia.


Trade Date Insider Title Buy/Sell #Shares Price Value Option
2012-05-16 KASEN STEWART M Director Buy 200 $444.00 $88,800 No
2012-03-19 MARKEL ANTHONY F Vice Chairman Sell 69 $422.39 $29,145 No
2012-03-14 Crowley F. Michael President & Co-COO Sell 550 $424.50 $233,477 No
2012-02-29 Whitt Richard R III President & Co-COO Sell 200 $409.51 $81,902 No
2011-12-06 MARKEL ANTHONY F Vice Chairman Sell 71 $401.10 $28,478 No
2011-12-02 Whitt Richard R III President & Co-COO Sell 100 $395.04 $39,504 No
2011-11-16 MARKEL STEVEN A Vice Chairman Sell 12,500 $396.60 $4,957,446 No
2011-09-28 MARKEL ANTHONY F Vice Chairman Sell 77 $366.05 $28,186 No
2011-09-06 WILSON DEBORA J Director Buy 131 $382.39 $50,093 No
2011-09-06 WILSON DEBORA J Director Buy 131 $382.39 $50,093 No
2011-09-01 EBY DOUGLAS C Director Sell 123 $392.16 $48,236 No
2011-08-11 Crowley F. Michael President & Co-COO Buy 250 $367.97 $91,992 No
2011-08-11 EBY DOUGLAS C Director Sell 100 $370.41 $37,041 No
2011-06-14 MARKEL ANTHONY F Vice Chairman Sell 71 $399.38 $28,356 No
2011-02-07 MARKEL ANTHONY F Vice Chairman Sell 68 $412.66 $28,061 No
2010-12-15 MARKEL ANTHONY F Vice Chairman Sell 2,492 $369.32 $920,346 No
2010-12-14 MARKEL ANTHONY F Vice Chairman Sell 2,029 $368.81 $748,313 No
2010-12-13 MARKEL ANTHONY F Vice Chairman Sell 2,000 $366.55 $733,098 No
2010-12-10 MARKEL ANTHONY F Vice Chairman Sell 1,405 $359.74 $505,430 No
2010-12-09 MARKEL ANTHONY F Vice Chairman Sell 1,484 $358.34 $531,774 No
2010-12-08 MARKEL ANTHONY F Vice Chairman Sell 1,700 $356.09 $605,355 No
2010-12-07 MARKEL ANTHONY F Vice Chairman Sell 913 $359.38 $328,114 No
2010-12-06 MARKEL ANTHONY F Vice Chairman Sell 1,016 $360.44 $366,207 No
2010-12-06 EBY DOUGLAS C Director Buy 27 $360.00 $9,720 No
2010-12-03 MARKEL ANTHONY F Vice Chairman Sell 1,352 $357.77 $483,707 No
2010-12-02 MARKEL ANTHONY F Vice Chairman Sell 2,010 $356.38 $716,329 No
2010-12-01 MARKEL ANTHONY F Vice Chairman Sell 2,881 $353.12 $1,017,353 No
2010-11-30 MARKEL ANTHONY F Vice Chairman Sell 1,768 $352.40 $623,045 No
2010-11-29 MARKEL ANTHONY F Vice Chairman Sell 1,725 $354.15 $610,907 No
2010-11-24 MARKEL ANTHONY F Vice Chairman Sell 1,100 $359.21 $395,126 No

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