MARKETAXESS HLDGS INC

Ticker: MKTX CUSIP: 57060D108 Class: COM

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

InstitutionSharesValue ($000)
VANGUARD GROUP INC3,839,889$695,980
BlackRock, Inc.3,746,472$679,048
PRIMECAP MANAGEMENT CO/CA/3,175,425$575,546
AQR CAPITAL MANAGEMENT LLC2,558,097$463,655
FMR LLC2,004,625$363,338
North Reef Capital Management LP1,609,330$291,691
STATE STREET CORP1,248,314$226,257
VAN ECK ASSOCIATES CORP1,214,967$220
GUARDCAP ASSET MANAGEMENT Ltd1,153,578$208,976
BANK OF MONTREAL /CAN/951,024$172,373
GEODE CAPITAL MANAGEMENT, LLC833,067$151,018
CITADEL ADVISORS LLC625,208$113,319
NEUBERGER BERMAN GROUP LLC549,639$99,622
JPMORGAN CHASE & CO545,364$98,847
Findlay Park Partners LLP536,400$97,223
TWO SIGMA INVESTMENTS, LP533,527$96,702
DIMENSIONAL FUND ADVISORS LP526,981$95,518
NORGES BANK503,855$91,324
MORGAN STANLEY424,877$77,009
BNP PARIBAS ARBITRAGE, SA375,735$68,102
CHARLES SCHWAB INVESTMENT MANAGEMENT INC318,386$57,707
RDST Capital LLC310,697$56,314
MILLENNIUM MANAGEMENT LLC301,665$54,677
Bank of New York Mellon Corp298,728$54,144
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP288,742$52,334
NORTHERN TRUST CORP234,306$42,468
Holocene Advisors, LP214,855$38,942
HRT FINANCIAL LP214,101$39
BANK OF AMERICA CORP /DE/199,231$36,111
BNP Paribas Investment Partners S.A.190,483$35
IEQ CAPITAL, LLC189,326$34,315
PRINCIPAL FINANCIAL GROUP INC178,073$32,276
RENAISSANCE TECHNOLOGIES LLC176,000$31,900
GOLDMAN SACHS GROUP INC172,598$31,283
TWO SIGMA ADVISERS, LP171,600$31,103
Connor, Clark & Lunn Investment Management Ltd.170,565$30,915
Walleye Capital LLC168,688$30,575
JANUS HENDERSON GROUP PLC168,447$30,534
Nuveen, LLC134,524$24,382
Public Sector Pension Investment Board128,700$23,327
Invesco Ltd.114,619$20,775
RAYMOND JAMES FINANCIAL INC113,465$20,565
UBS ASSET MANAGEMENT AMERICAS INC108,428$19,653
T. Rowe Price Investment Management, Inc.104,666$19
COOKE & BIELER LP104,100$18,868
Champlain Investment Partners, LLC103,311$18,725
UBS Group AG101,955$18,479
Schonfeld Strategic Advisors LLC100,235$18,168
Legal & General Group Plc97,269$17,630
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM97,186$17,615
VICTORY CAPITAL MANAGEMENT INC93,670$16,978
FLOSSBACH VON STORCH AG93,100$16,874
RHUMBLINE ADVISERS88,192$15,985
AMERIPRISE FINANCIAL INC83,362$15,109
Cerity Partners LLC81,965$14,856
Gillson Capital LP80,563$15
VOLORIDGE INVESTMENT MANAGEMENT, LLC80,135$14,524
Interval Partners, LP76,423$13,852
Goodman Financial Corp76,294$13,828
CWM, LLC75,665$14
Swiss National Bank73,700$13,358
Squarepoint Ops LLC71,658$12,988
Assenagon Asset Management S.A.63,228$11,460
ALGERT GLOBAL LLC59,310$11
Mariner, LLC59,260$10,748
CANADA PENSION PLAN INVESTMENT BOARD50,600$9,171
BW Gestao de Investimentos Ltda.49,500$8,972
ICICI Prudential Asset Management Co Ltd49,289$8,934
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC46,537$8,449
FIRST TRUST ADVISORS LP42,955$7,786
Quantinno Capital Management LP41,229$7,473
Prana Capital Management, LP39,971$7,245
WILSON ASSET MANAGEMENT (INTERNATIONAL) PTY LTD39,461$7,152
Quadrature Capital Ltd39,174$7,100
BAILLIE GIFFORD & CO39,115$7,090
Trexquant Investment LP38,572$6,991
WINTON GROUP Ltd36,364$6,591
TEACHER RETIREMENT SYSTEM OF TEXAS36,140$6,550
D. E. Shaw & Co., Inc.36,099$6,543
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM36,041$6,532
NEW YORK STATE TEACHERS RETIREMENT SYSTEM35,487$6
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM35,210$6,382
GREAT WEST LIFE ASSURANCE CO /CAN/35,041$6
PRUDENTIAL FINANCIAL INC34,363$6,228
PRICE T ROWE ASSOCIATES INC /MD/33,975$6
SUSQUEHANNA INTERNATIONAL GROUP, LLP33,473$6,067
STATE OF WISCONSIN INVESTMENT BOARD33,390$6,052
STIFEL FINANCIAL CORP33,224$6,022
BALYASNY ASSET MANAGEMENT L.P.32,695$5,926
PICTON MAHONEY ASSET MANAGEMENT32,396$5,872
Thrivent Financial for Lutherans31,873$6
CITIGROUP INC31,396$5,691
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND30,694$5,563
GW&K Investment Management, LLC30,579$6
VAN DEN BERG MANAGEMENT I, INC30,399$5,510
ROYAL BANK OF CANADA30,307$5,494
MERCER GLOBAL ADVISORS INC /ADV29,599$5,365
Man Group plc29,373$5,324
FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A.29,307$5,312
Robertson Opportunity Capital, LLC28,830$5,225
375 other institutions1,741,071$287,620
Total (475 institutions)36,391,577$6,186,509