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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
Mirae Asset Global Investments Co., Ltd.4,805$1.07M0.00%+177+3.8%Added
Mercer Global Advisors Inc4,907$1.10M0.00%+2,735+125.9%Added
Nisa Investment Advisors, LLC4,942$1.10M0.00%+297+6.4%Added
DekaBank Deutsche Girozentrale5,080$1.10M0.00%+51+1.0%Added
Quest Partners LLC4,952$1.11M0.11%+520+11.7%Added
Ontario Teachers Pension Plan Board5,007$1.12M0.02%+1,559+45.2%Added
Fox Run Management, L.L.C.5,018$1.12M0.19%+3,923+358.3%Added
Moore Capital Management, LP5,079$1.13M0.02%+3,573+237.3%Added
Neuberger Berman Group LLC5,090$1.14M0.00%+1,543+43.5%Added
Comerica Bank5,169$1.15M0.00%−12−0.2%Reduced
Merit Financial Group, LLC5,221$1.17M0.01%+3,591+220.3%Added
Advisor Group Holdings, Inc.5,307$1.18M0.00%+170+3.3%Added
Victory Capital Management Inc5,400$1.21M0.00%−12,000−69.0%Reduced
Oddo BHF Asset Management SAS5,458$1.22M0.05%−384−6.6%Reduced
Callahan Advisors, LLC5,500$1.23M0.11%00.0%Unchanged
Pallas Capital Advisors LLC5,629$1.26M0.05%+4,134+276.5%Added
Captrust Financial Advisors5,981$1.34M0.00%+3,797+173.9%Added
Utah Retirement Systems6,039$1.35M0.01%−83−1.4%Reduced
Horizon Investments, LLC6,079$1.36M0.02%+5,530+1,007.3%Added
US Bancorp6,303$1.41M0.00%−1,754−21.8%Reduced
Bangor Savings Bank6,303$1.41M0.13%−71−1.1%Reduced
Northwest & Ethical Investments L.P.6,313$1.41M0.03%+214+3.5%Added
Keybank National Association6,458$1.44M0.01%−950−12.8%Reduced
Boston Private Wealth LLC6,737$1.50M0.08%+921+15.8%Added
Point72 Hong Kong Ltd6,762$1.51M0.10%+6,762New
Jefferies Financial Group Inc.7,000$1.56M0.03%−26,797−79.3%Reduced
Danske Bank A/S7,113$1.59M0.00%+6,713+1,678.3%Added
Scientech Research LLC7,267$1.62M0.40%+4,467+159.5%Added
Dark Forest Capital Management LP7,522$1.68M0.07%−1,633−17.8%Reduced
Amalgamated Bank7,561$1.69M0.01%+285+3.9%Added
Public Sector Pension Investment Board7,714$1.72M0.01%−2,380−23.6%Reduced
UniSuper Management Pty Ltd7,751$1.73M0.01%00.0%Unchanged
Ashford Capital Management Inc7,771$1.74M0.20%−59−0.8%Reduced
KLP Kapitalforvaltning AS7,800$1.74M0.01%+500+6.8%Added
Pictet Asset Management Holding SA7,904$1.76M0.00%−1,071−11.9%Reduced
CIBC World Markets Inc.8,004$1.79M0.00%−928−10.4%Reduced
Stiles Financial Services Inc8,006$1.79M0.62%+337+4.4%Added
Graham Capital Management, L.P.8,038$1.80M0.05%+5,545+222.4%Added
Retirement Systems of Alabama8,046$1.80M0.01%−56−0.7%Reduced
AIA Group Ltd8,261$1.85M0.04%−3,235−28.1%Reduced
ProShare Advisors LLC8,284$1.85M0.00%−3,226−28.0%Reduced
First Trust Advisors LP8,435$1.88M0.00%−23,529−73.6%Reduced
Lecap Asset Management Ltd8,458$1.89M0.67%+2,964+53.9%Added
State of Tennessee, Treasury Department8,632$1.93M0.01%−194−2.2%Reduced
Truist Financial Corp8,638$1.93M0.00%+222+2.6%Added
Oppenheimer Asset Management Inc.8,810$1.97M0.02%−10,397−54.1%Reduced
New York Life Investment Management LLC8,921$1.99M0.02%−31−0.3%Reduced
Pine Valley Investments Ltd Liability Co9,149$2.04M0.12%−18−0.2%Reduced
Czech National Bank9,164$2.05M0.02%+504+5.8%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys9,198$2.05M0.01%+576+6.7%Added
Elevate Capital Advisors, LLC9,249$2.07M1.65%+4,763+106.2%Added
Handelsbanken Fonder AB9,344$2.09M0.01%−1,300−12.2%Reduced
MetLife Investment Management9,538$2.13M0.01%−240−2.5%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH10,068$2.25M0.00%+1,619+19.2%Added
State of Michigan Retirement System10,193$2.28M0.01%00.0%Unchanged
Y-Intercept (Hong Kong) Ltd10,848$2.42M0.06%+4,402+68.3%Added
Coldstream Capital Management Inc10,956$2.45M0.04%+255+2.4%Added
Quadrature Capital Ltd10,986$2.45M0.04%+10,986New
Arizona State Retirement System10,988$2.45M0.01%+182+1.7%Added
Mariner, LLC10,990$2.45M0.00%+6,581+149.3%Added
Voya Investment Management LLC11,008$2.46M0.00%+237+2.2%Added
Jump Financial, LLC11,108$2.48M0.03%+2,492+28.9%Added
Russell Investments Group, Ltd.11,999$2.68M0.00%−5,189−30.2%Reduced
Public Employees Retirement System of Ohio12,440$2.78M0.01%−847−6.4%Reduced
Toroso Investments, LLC12,441$2.78M0.02%+480+4.0%Added
Rafferty Asset Management, LLC12,469$2.78M0.01%+107+0.9%Added
Sanctuary Advisors, LLC12,527$2.80M0.02%+848+7.3%Added
State of New Jersey Common Pension Fund D12,789$2.86M0.01%−524−3.9%Reduced
Fred Alger Management, LLC13,098$2.93M0.01%+13,098New
Zurcher Kantonalbank (Zurich Cantonalbank)13,161$2.94M0.01%+2,928+28.6%Added
Gotham Asset Management, LLC13,214$2.95M0.02%+11,694+769.3%Added
Wealth Enhancement Advisory Services, LLC14,336$3.11M0.01%+10,986+327.9%Added
Police & Firemen's Retirement System of New Jersey13,942$3.11M0.03%+532+4.0%Added
Agf Management Ltd14,314$3.20M0.01%+181+1.3%Added
Winton Group Ltd14,508$3.24M0.17%+14,508New
Thrivent Financial for Lutherans15,153$3.38M0.01%−40.0%Reduced
Quantinno Capital Management LP15,436$3.45M0.01%+6,458+71.9%Added
Lighthouse Investment Partners, LLC15,843$3.54M0.15%+13,911+720.0%Added
LRT Capital Management, LLC15,895$3.55M2.10%+4,249+36.5%Added
Healthcare of Ontario Pension Plan Trust Fund15,896$3.55M0.01%+9,246+139.0%Added
Great West Life Assurance Co16,110$3.60M0.01%+5,089+46.2%Added
Jackson Square Partners, LLC16,274$3.63M1.34%−81,441−83.3%Reduced
Ameriprise Financial Inc16,518$3.69M0.00%+3,229+24.3%Added
Alamar Capital Management, LLC16,752$3.74M2.03%−262−1.5%Reduced
Treasurer of the State of North Carolina17,025$3.80M0.01%+120+0.7%Added
D.A. Davidson & Co.18,250$4.08M0.03%+267+1.5%Added
Alberta Investment Management Corp18,300$4.09M0.03%+2,000+12.3%Added
Squarepoint Ops LLC18,367$4.10M0.01%−53,771−74.5%Reduced
Brevan Howard Capital Management LP18,725$4.18M0.05%+14,266+319.9%Added
CWM, LLC19,112$4.27M0.02%+14,792+342.4%Added
Atom Investors LP19,261$4.30M0.38%+19,261New
Cinctive Capital Management LP19,275$4.30M0.24%+4,756+32.8%Added
Nordea Investment Management AB19,734$4.33M0.00%+2,784+16.4%Added
Chevy Chase Trust Holdings, Inc.19,809$4.42M0.01%+34+0.2%Added
Wells Fargo & Company20,021$4.47M0.00%−10,029−33.4%Reduced
LPL Financial LLC20,121$4.49M0.00%+11,247+126.7%Added
New York State Common Retirement Fund21,319$4.76M0.01%00.0%Unchanged
Natixis Advisors, L.P.21,575$4.82M0.01%+3,396+18.7%Added
Ensign Peak Advisors, Inc22,802$5.09M0.01%+4,860+27.1%Added
Flossbach Von Storch AG23,000$5.14M0.02%00.0%Unchanged