MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

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

InstitutionSharesValue ($000)
VANGUARD GROUP INC1,171,904$2,519,183
BlackRock, Inc.711,291$1,529,026
PRINCIPAL FINANCIAL GROUP INC533,135$1,146,141
Select Equity Group, L.P.427,882$919,797
Davis Selected Advisers415,160$892,496
MORGAN STANLEY392,164$843,021
STATE STREET CORP304,913$655,456
Boston Partners262,151$563,463
GEODE CAPITAL MANAGEMENT, LLC224,964$482,189
DAVENPORT & Co LLC209,999$452,365
VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V.204,861$440,379
BAILLIE GIFFORD & CO188,437$405,074
NORGES BANK147,737$317,583
BANK OF AMERICA CORP /DE/147,280$316,600
DIMENSIONAL FUND ADVISORS LP130,557$280,680
WELLINGTON MANAGEMENT GROUP LLP111,896$240,537
T. Rowe Price Investment Management, Inc.102,045$219
Bank Julius Baer & Co. Ltd, Zurich97,923$211,172
FENIMORE ASSET MANAGEMENT INC88,266$189,741
Madison Avenue Partners, LP87,889$188,931
NORTHERN TRUST CORP84,619$181,901
Douglass Winthrop Advisors, LLC81,938$176,138
JANA Partners Management, LP81,219$174,592
FORT WASHINGTON INVESTMENT ADVISORS INC /OH/79,713$171,355
BARR E S & CO77,974$167,617
UBS ASSET MANAGEMENT AMERICAS INC77,650$166,920
CHECK CAPITAL MANAGEMENT INC/CA77,313$166,196
Polar Capital Holdings Plc77,000$165,523
JENNISON ASSOCIATES LLC73,199$157,352
Epoch Investment Partners, Inc.70,442$151,426
SCHARF INVESTMENTS, LLC69,203$148,794
Legal & General Group Plc68,957$148,233
RAYMOND JAMES FINANCIAL INC67,721$145,576
CHARLES SCHWAB INVESTMENT MANAGEMENT INC67,388$144,861
HighTower Advisors, LLC65,702$141,236
WELLS FARGO & COMPANY/MN58,129$124,957
Graham Holdings Co Master Retirement Trust58,008$125
TD Asset Management Inc56,075$120,542
Graham Holdings Co55,430$119
Davis Asset Management, L.P.50,000$107,483
GOLDMAN SACHS GROUP INC47,386$101,862
AVENIR CORP46,372$99,684
Giverny Capital Inc.43,978$94,537
ROYAL BANK OF CANADA42,051$90,396
ENVESTNET ASSET MANAGEMENT INC41,662$89,558
STEGINSKY CAPITAL LLC40,990$88
Bank of New York Mellon Corp39,062$83,970
Quilter Plc36,322$78,080
THOMPSON SIEGEL & WALMSLEY LLC35,364$76
Swiss National Bank34,670$74,528
DF DENT & CO INC34,334$73,806
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM33,509$72,033
ANCHOR CAPITAL ADVISORS LLC32,922$70,771
COOKE & BIELER LP32,047$68,890
UBS Group AG31,691$68,125
DEUTSCHE BANK AG\30,157$64,827
Sumitomo Mitsui Trust Holdings, Inc.28,995$62,329
Sather Financial Group Inc27,478$59,068
Greenbrier Partners Capital Management, LLC26,578$57
Amundi26,189$56,297
Capco Asset Management, LLC26,094$56,093
RENAISSANCE TECHNOLOGIES LLC26,031$55,958
CAPTRUST FINANCIAL ADVISORS24,737$53,175
FIRST TRUST ADVISORS LP23,482$50,478
Marathon Asset Management Ltd22,986$49,412
GREENLEA LANE CAPITAL MANAGEMENT, LLC22,905$49,238
Mitsubishi UFJ Trust & Banking Corp21,879$47,032
BECK MACK & OLIVER LLC21,601$46,435
Russell Investments Group, Ltd.20,733$44,641
Broad Run Investment Management, LLC20,525$44,122
Lafayette Investments, Inc.20,393$43,838
COUNTRY TRUST BANK20,284$43,604
National Pension Service20,003$42,999
Invesco Ltd.19,158$41,183
MARSHALL WACE, LLP18,997$40,837
Mraz, Amerine & Associates, Inc.18,938$40,710
Qube Research & Technologies Ltd18,633$40,054
HSBC HOLDINGS PLC18,554$39,900
JANE STREET GROUP, LLC18,410$39,575
AMERICAN CENTURY COMPANIES INC18,342$39,429
PINNACLE ASSOCIATES LTD18,236$39,200
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM18,233$39,195
Nuveen, LLC17,926$38,535
Lincoln Capital LLC17,402$37,408
BARCLAYS PLC15,985$34,362
CAISSE DE DEPOT ET PLACEMENT DU QUEBEC15,637$33,614
Citadel Investment Advisory, Inc.15,619$34
AQR CAPITAL MANAGEMENT LLC15,603$33,540
RHUMBLINE ADVISERS15,367$33,034
Toroso Investments, LLC15,335$32,965
JANUS HENDERSON GROUP PLC14,903$32,054
JPMORGAN CHASE & CO14,858$31,940
Poehling Capital Management, INC.13,222$28,423
STANSBERRY ASSET MANAGEMENT, LLC12,495$26,860
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.12,484$26,595
FMR LLC12,334$26,514
DANSKE BANK A/S12,253$26,340
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM12,237$26,305
MILLENNIUM MANAGEMENT LLC12,150$26,118
APG Asset Management N.V.11,507$21,062
803 other institutions982,781$1,942,873
Total (903 institutions)9,769,143$20,109,663