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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, Q4 2025

Institutional positions in Marketaxess Holdings Inc as of Dec 31, 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
487
+47 vs. Q3 2025
Shares held
36.5M
+1.81M (+5.2%) vs. Q3 2025
Total value
$6.62B
+$566.0M (+9.4%) vs. Q3 2025
New holders
118
155 more added
Sold out
71
171 more reduced

12 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2025: 487 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 heldQ4 2025: $6.62B
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, Q4 2025

Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q3 2025.

Institutions holding MKTX in Q4 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Bard Associates Inc126$22.8K0.01%+126New
Bank Julius Baer & Co. Ltd, Zurich125$22.6K0.00%00.0%Unchanged
Signaturefd, LLC116$21.0K0.00%−199−63.2%Reduced
CVA Family Office, LLC113$20.5K0.00%+7+6.6%Added
V-Square Quantitative Management LLC111$20.1K0.00%+111New
HM Payson & Co110$19.9K0.00%00.0%Unchanged
NFJ Investment Group, LLC106$19.2K0.00%−8−7.0%Reduced
Smartleaf Asset Management LLC100$18.3K0.00%−2−2.0%Reduced
Onefund, LLC99$17.9K0.01%00.0%Unchanged
Nomura Asset Management Co Ltd98$17.8K0.00%00.0%Unchanged
Private Trust Co NA96$17.4K0.00%−5−5.0%Reduced
Atlantic Trust, LLC95$17.2K0.00%+55+137.5%Added
CNB Bank92$16.7K0.01%00.0%Unchanged
GoalVest Advisory LLC90$16.3K0.00%+90New
Rockefeller Capital Management L.P.88$16.1K0.00%−53−37.6%Reduced
Boreal Capital Management LLC70$12.7K0.01%00.0%Unchanged
Leonteq Securities AG67$12.1K0.00%+6+9.8%Added
Whittier Trust Co of Nevada Inc64$11.6K0.00%00.0%Unchanged
MAI Capital Management63$11.4K0.00%+61+3,050.0%Added
Roble, Belko & Company, Inc55$10.0K0.00%00.0%Unchanged
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.56$10.0K0.00%00.0%Unchanged
International Assets Investment Management, LLC51$9.24K0.00%+51New
SBI Securities Co., Ltd.50$9.06K0.00%+3+6.4%Added
Parallel Advisors, LLC47$8.52K0.00%−321−87.2%Reduced
Huntington National Bank44$7.98K0.00%−135−75.4%Reduced
SageView Advisory Group, LLC44$7.98K0.00%+44New
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund44$7.97K0.00%+44New
Storebrand Asset Management AS43$7.79K0.00%00.0%Unchanged
Root Financial Partners, LLC42$7.61K0.00%+11+35.5%Added
Fideuram Asset Management (Ireland) dac33$7.13K0.00%+33New
West Branch Capital LLC34$6.16K0.00%00.0%Unchanged
Global Retirement Partners, LLC32$5.88K0.00%+9+39.1%Added
Parkside Financial Bank & Trust31$5.62K0.00%−1−3.1%Reduced
C M Bidwell & Associates Ltd29$5.26K0.00%00.0%Unchanged
Smithfield Trust Co28$5.00K0.00%00.0%Unchanged
Bogart Wealth, LLC28$4.99K0.00%+4+16.7%Added
TCTC Holdings, LLC26$4.71K0.00%00.0%Unchanged
High Note Wealth, LLC26$4.71K0.00%+26New
Geneos Wealth Management Inc.25$4.53K0.00%−55−68.8%Reduced
Investors Research Corp22$3.99K0.00%00.0%Unchanged
First Eagle Investment Management, LLC22$3.99K0.00%+22New
Sunbelt Securities, Inc.18$3.26K0.00%+18New
Keating Financial Advisory Services, Inc.17$3.08K0.00%+17New
Farmers & Merchants Investments Inc15$2.72K0.00%+10+200.0%Added
MV Capital Management, Inc.15$2.72K0.00%+12+400.0%Added
SRS Capital Advisors, Inc.12$2.17K0.00%−4,483−99.7%Reduced
MTM Investment Management, LLC12$2.17K0.00%00.0%Unchanged
Dogwood Wealth Management LLC11$1.99K0.00%+2+22.2%Added
Tucker Asset Management LLC11$1.99K0.00%+11New
Macquarie Group Ltd10$1.81K0.00%−140−93.3%Reduced
Transamerica Financial Advisors, Inc.9$1.67K0.00%+8+800.0%Added
Manchester Capital Management LLC9$1.63K0.00%00.0%Unchanged
South State Corp.9$1.63K0.00%+8+800.0%Added
Marquette Asset Management, LLC9$1.63K0.00%+9New
Financial Consulate, Inc9$1.63K0.00%+9New
Basecamp Wealth Advisors LLC9$1.63K0.00%+9New
Cape Investment Advisory, Inc.8$1.45K0.00%00.0%Unchanged
Central Trust Co7$1.27K0.00%00.0%Unchanged
ORG Partners LLC7$1.27K0.00%+7New
Zions Bancorporation, National Association6$1.09K0.00%−6−50.0%Reduced
Rossby Financial, LCC6$1.09K0.00%−1−14.3%Reduced
Spire Wealth Management6$1.09K0.00%00.0%Unchanged
Cromwell Holdings LLC6$1.09K0.00%+2+50.0%Added
JFS Wealth Advisors, LLC6$1.09K0.00%+6New
UMA Financial Services, Inc.6$1.09K0.00%+6New
Ankerstar Wealth, LLC6$1.09K0.00%+6New
Optima Capital LLC6$1.09K0.00%+6New
Avion Wealth6$1.00K0.00%+4+200.0%Added
Raffa Wealth Management, LLC5$9060.00%00.0%Unchanged
Sachetta, LLC3$5440.00%00.0%Unchanged
Wealth Watch Advisors, INC3$5440.00%00.0%Unchanged
Cullen/Frost Bankers, Inc.3$5440.00%+3New
Bell Investment Advisors, Inc3$5440.00%+3New
Gilpin Wealth Management, LLC3$5440.00%+3New
Cornerstone Planning Group LLC3$5060.00%−2−40.0%Reduced
Dunhill Financial, LLC2$3950.00%+1+100.0%Added
DiNuzzo Private Wealth, Inc.2$3630.00%−3−60.0%Reduced
Rialto Wealth Management, LLC2$3630.00%−1−33.3%Reduced
HFM Investment Advisors, LLC2$3630.00%+1+100.0%Added
Abound Wealth Management2$3630.00%+2New
ZRC Wealth Management, LLC2$3630.00%+2New
Annis Gardner Whiting Capital Advisors, LLC1$1820.00%+1New
Fortitude Family Office, LLC1$1810.00%−5−83.3%Reduced
Harbour Investments, Inc.1$1810.00%00.0%Unchanged
Bay Harbor Wealth Management, LLC1$1810.00%00.0%Unchanged
Creative Financial Designs Inc1$1810.00%+1New
Hughes Financial Services, LLC1$1810.00%+1New
Point72 Asset Management, L.P.0$00.00%−163,900−100.0%Sold out
Freestone Grove Partners LP0$00.00%−75,388−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−64,825−100.0%Sold out
Engineers Gate Manager LP0$00.00%−42,002−100.0%Sold out
Prospector Partners LLC0$00.00%−37,965−100.0%Sold out
Natixis0$00.00%−35,026−100.0%Sold out
Weiss Asset Management LP0$00.00%−34,404−100.0%Sold out
First Citizens Bank & Trust Co0$00.00%−34,267−100.0%Sold out
Alps Advisors Inc0$00.00%−32,267−100.0%Sold out
Envestnet Portfolio Solutions, Inc.0$00.00%−31,477−100.0%Sold out
Grandeur Peak Global Advisors, LLC0$00.00%−20,408−100.0%Sold out
Elo Mutual Pension Insurance Co0$00.00%−18,164−100.0%Sold out
ExodusPoint Capital Management, LP0$00.00%−16,925−100.0%Sold out