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Marketaxess Holdings Inc

MKTX
Exchange
Nasdaq
Industry
Security Brokers, Dealers & Flotation Companies
SEC CIK
0001278021

In the last 90 days, Marketaxess Holdings Inc insiders filed 0 open-market purchases and 4 sales; 397 institutions reported holding it in 13F filings for Q2 2026, worth $4.44B in total; no superinvestor holds it.

13F holders, Q2 2025

Institutional positions in Marketaxess Holdings Inc as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
531
+27 vs. Q1 2025
Shares held
36.9M
−208.8K (−0.6%) vs. Q1 2025
Total value
$8.24B
+$209.3M (+2.6%) vs. Q1 2025
New holders
85
229 more added
Sold out
58
159 more reduced

7 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting MKTX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2025: 531 institutions
Q1 2021: 589 institutionsQ2 2021: 551 institutionsQ3 2021: 508 institutionsQ4 2021: 505 institutionsQ1 2022: 506 institutionsQ2 2022: 505 institutionsQ3 2022: 479 institutionsQ4 2022: 500 institutionsQ1 2023: 540 institutionsQ2 2023: 514 institutionsQ3 2023: 485 institutionsQ4 2023: 506 institutionsQ1 2024: 463 institutionsQ2 2024: 468 institutionsQ3 2024: 511 institutionsQ4 2024: 519 institutionsQ1 2025: 511 institutionsQ2 2025: 531 institutionsQ3 2025: 452 institutionsQ4 2025: 487 institutionsQ1 2026: 452 institutionsQ2 2026: 397 institutions
Value heldQ2 2025: $8.24B
Q1 2021: $17.7BQ2 2021: $16.8BQ3 2021: $15.3BQ4 2021: $15.0BQ1 2022: $12.4BQ2 2022: $9.28BQ3 2022: $8.19BQ4 2022: $10.3BQ1 2023: $14.5BQ2 2023: $9.88BQ3 2023: $7.98BQ4 2023: $10.9BQ1 2024: $8.14BQ2 2024: $7.48BQ3 2024: $9.42BQ4 2024: $8.51BQ1 2025: $8.05BQ2 2025: $8.24BQ3 2025: $6.21BQ4 2025: $6.62BQ1 2026: $6.31BQ2 2026: $4.44B
Institutions holding MKTX and their total value by quarter
QuarterHoldersValue
Q2 2026397$4.44B
Q1 2026452$6.31B
Q4 2025487$6.62B
Q3 2025452$6.21B
Q2 2025531$8.24B
Q1 2025511$8.05B
Q4 2024519$8.51B
Q3 2024511$9.42B
Q2 2024468$7.48B
Q1 2024463$8.14B
Q4 2023506$10.9B
Q3 2023485$7.98B
Q2 2023514$9.88B
Q1 2023540$14.5B
Q4 2022500$10.3B
Q3 2022479$8.19B
Q2 2022505$9.28B
Q1 2022506$12.4B
Q4 2021505$15.0B
Q3 2021508$15.3B
Q2 2021551$16.8B
Q1 2021589$17.7B

Institutions, Q2 2025

Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q1 2025.

Institutions holding MKTX in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Norris Perne & French LLP36,939$8.25M0.57%+195+0.5%Added
State Board of Administration of Florida Retirement System36,876$8.24M0.01%+2,024+5.8%Added
Wasatch Advisors Inc36,532$8.16M0.04%−651,516−94.7%Reduced
California State Teachers Retirement System35,971$8.03M0.01%00.0%Unchanged
First Citizens Bank & Trust Co35,700$7.97M0.14%+11,029+44.7%Added
Adage Capital Partners GP, L.L.C.34,350$7.67M0.01%+9,900+40.5%Added
Twinbeech Capital LP34,216$7.64M0.17%+34,216New
Envestnet Portfolio Solutions, Inc.34,020$7.60M0.03%+10,594+45.2%Added
National Bank of Canada33,702$7.53M0.01%+4,010+13.5%Added
Intech Investment Management LLC33,543$7.49M0.07%+26,465+373.9%Added
Bank of Montreal33,050$7.38M0.00%−123,265−78.9%Reduced
Schonfeld Strategic Advisors LLC32,867$7.34M0.06%−13,805−29.6%Reduced
Aquatic Capital Management LLC32,447$7.25M0.15%+6,483+25.0%Added
Interval Partners, LP32,114$7.17M0.16%+10,838+50.9%Added
Magnetar Financial LLC31,881$7.12M0.03%+23,674+288.5%Added
SG Americas Securities, LLC31,787$7.10M0.03%+23,577+287.2%Added
Congress Wealth Management LLC31,389$7.01M0.07%−6,907−18.0%Reduced
Prana Capital Management, LP30,815$6.88M0.25%−13,596−30.6%Reduced
Susquehanna International Group, LLP30,150$6.73M0.01%+12,488+70.7%Added
Teacher Retirement System of Texas29,558$6.60M0.03%+314+1.1%Added
New York State Teachers Retirement System29,493$6.59M0.01%−30.0%Reduced
Hantz Financial Services, Inc.29,239$6.53M0.11%−3,767−11.4%Reduced
Manufacturers Life Insurance Company, The28,897$6.45M0.01%−803−2.7%Reduced
Cerity Partners LLC28,041$6.26M0.01%+19,211+217.6%Added
Guardian Capital LP26,300$5.87M0.21%00.0%Unchanged
Stifel Financial Corp25,523$5.70M0.01%+18,164+246.8%Added
Toronto Dominion Bank25,465$5.69M0.01%+5,508+27.6%Added
Caisse de Depot Et Placement du Quebec25,267$5.64M0.01%+15,867+168.8%Added
Lombard Odier Asset Management (Europe) Ltd24,750$5.53M0.40%+24,750New
Grandeur Peak Global Advisors, LLC24,546$5.48M0.66%−4,075−14.2%Reduced
Geneva Capital Management LLC23,969$5.35M0.09%+5,282+28.3%Added
Flossbach Von Storch AG23,000$5.14M0.02%00.0%Unchanged
Ensign Peak Advisors, Inc22,802$5.09M0.01%+4,860+27.1%Added
Natixis Advisors, L.P.21,575$4.82M0.01%+3,396+18.7%Added
New York State Common Retirement Fund21,319$4.76M0.01%00.0%Unchanged
LPL Financial LLC20,121$4.49M0.00%+11,247+126.7%Added
Wells Fargo & Company20,021$4.47M0.00%−10,029−33.4%Reduced
Chevy Chase Trust Holdings, Inc.19,809$4.42M0.01%+34+0.2%Added
Nordea Investment Management AB19,734$4.33M0.00%+2,784+16.4%Added
Cinctive Capital Management LP19,275$4.30M0.24%+4,756+32.8%Added
Atom Investors LP19,261$4.30M0.38%+19,261New
CWM, LLC19,112$4.27M0.02%+14,792+342.4%Added
Brevan Howard Capital Management LP18,725$4.18M0.05%+14,266+319.9%Added
Squarepoint Ops LLC18,367$4.10M0.01%−53,771−74.5%Reduced
Alberta Investment Management Corp18,300$4.09M0.03%+2,000+12.3%Added
D.A. Davidson & Co.18,250$4.08M0.03%+267+1.5%Added
Treasurer of the State of North Carolina17,025$3.80M0.01%+120+0.7%Added
Alamar Capital Management, LLC16,752$3.74M2.03%−262−1.5%Reduced
Ameriprise Financial Inc16,518$3.69M0.00%+3,229+24.3%Added
Jackson Square Partners, LLC16,274$3.63M1.34%−81,441−83.3%Reduced
Great West Life Assurance Co16,110$3.60M0.01%+5,089+46.2%Added
Healthcare of Ontario Pension Plan Trust Fund15,896$3.55M0.01%+9,246+139.0%Added
LRT Capital Management, LLC15,895$3.55M2.10%+4,249+36.5%Added
Lighthouse Investment Partners, LLC15,843$3.54M0.15%+13,911+720.0%Added
Quantinno Capital Management LP15,436$3.45M0.01%+6,458+71.9%Added
Thrivent Financial for Lutherans15,153$3.38M0.01%−40.0%Reduced
Winton Group Ltd14,508$3.24M0.17%+14,508New
Agf Management Ltd14,314$3.20M0.01%+181+1.3%Added
Police & Firemen's Retirement System of New Jersey13,942$3.11M0.03%+532+4.0%Added
Wealth Enhancement Advisory Services, LLC14,336$3.11M0.01%+10,986+327.9%Added
Gotham Asset Management, LLC13,214$2.95M0.02%+11,694+769.3%Added
Zurcher Kantonalbank (Zurich Cantonalbank)13,161$2.94M0.01%+2,928+28.6%Added
Fred Alger Management, LLC13,098$2.93M0.01%+13,098New
State of New Jersey Common Pension Fund D12,789$2.86M0.01%−524−3.9%Reduced
Sanctuary Advisors, LLC12,527$2.80M0.02%+848+7.3%Added
Rafferty Asset Management, LLC12,469$2.78M0.01%+107+0.9%Added
Toroso Investments, LLC12,441$2.78M0.02%+480+4.0%Added
Public Employees Retirement System of Ohio12,440$2.78M0.01%−847−6.4%Reduced
Russell Investments Group, Ltd.11,999$2.68M0.00%−5,189−30.2%Reduced
Jump Financial, LLC11,108$2.48M0.03%+2,492+28.9%Added
Voya Investment Management LLC11,008$2.46M0.00%+237+2.2%Added
Mariner, LLC10,990$2.45M0.00%+6,581+149.3%Added
Arizona State Retirement System10,988$2.45M0.01%+182+1.7%Added
Quadrature Capital Ltd10,986$2.45M0.04%+10,986New
Coldstream Capital Management Inc10,956$2.45M0.04%+255+2.4%Added
Y-Intercept (Hong Kong) Ltd10,848$2.42M0.06%+4,402+68.3%Added
State of Michigan Retirement System10,193$2.28M0.01%00.0%Unchanged
Universal- Beteiligungs- und Servicegesellschaft mbH10,068$2.25M0.00%+1,619+19.2%Added
MetLife Investment Management9,538$2.13M0.01%−240−2.5%Reduced
Handelsbanken Fonder AB9,344$2.09M0.01%−1,300−12.2%Reduced
Elevate Capital Advisors, LLC9,249$2.07M1.65%+4,763+106.2%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys9,198$2.05M0.01%+576+6.7%Added
Czech National Bank9,164$2.05M0.02%+504+5.8%Added
Pine Valley Investments Ltd Liability Co9,149$2.04M0.12%−18−0.2%Reduced
New York Life Investment Management LLC8,921$1.99M0.02%−31−0.3%Reduced
Oppenheimer Asset Management Inc.8,810$1.97M0.02%−10,397−54.1%Reduced
Truist Financial Corp8,638$1.93M0.00%+222+2.6%Added
State of Tennessee, Treasury Department8,632$1.93M0.01%−194−2.2%Reduced
Lecap Asset Management Ltd8,458$1.89M0.67%+2,964+53.9%Added
First Trust Advisors LP8,435$1.88M0.00%−23,529−73.6%Reduced
ProShare Advisors LLC8,284$1.85M0.00%−3,226−28.0%Reduced
AIA Group Ltd8,261$1.85M0.04%−3,235−28.1%Reduced
Retirement Systems of Alabama8,046$1.80M0.01%−56−0.7%Reduced
Graham Capital Management, L.P.8,038$1.80M0.05%+5,545+222.4%Added
Stiles Financial Services Inc8,006$1.79M0.62%+337+4.4%Added
CIBC World Markets Inc.8,004$1.79M0.00%−928−10.4%Reduced
Pictet Asset Management Holding SA7,904$1.76M0.00%−1,071−11.9%Reduced
KLP Kapitalforvaltning AS7,800$1.74M0.01%+500+6.8%Added
Ashford Capital Management Inc7,771$1.74M0.20%−59−0.8%Reduced
UniSuper Management Pty Ltd7,751$1.73M0.01%00.0%Unchanged