MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

Note: Option positions (PUT/CALL) are excluded.

Q2 2014

Shares 1,026 Value ($000) $669 Avg Close $630.07 Range $593.76 - $655.75

Q1 2014

Shares 1,390 Value ($000) $829 Avg Close $569.59 Range $527.17 - $596.87

Q4 2013

Shares 6,500 Value ($000) $3,772 Avg Close $542.65 Range $511.06 - $582.59

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	1,026	$669	$630.07	$593.76 - $655.75
Q1 2014	1,390	$829	$569.59	$527.17 - $596.87
Q4 2013	6,500	$3,772	$542.65	$511.06 - $582.59