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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
Wells Fargo & Company5,295$959.7K0.00%−6,871−56.5%Reduced
Essential Partners LLC5,173$937.6K0.29%+3,209+163.4%Added
Legato Capital Management LLC5,168$936.7K0.08%+5,168New
Y-Intercept (Hong Kong) Ltd5,160$935.3K0.02%+5,160New
Gsa Capital Partners LLP5,137$931.0K0.08%+5,137New
Voya Investment Management LLC4,876$883.8K0.00%−914−15.8%Reduced
Universal- Beteiligungs- und Servicegesellschaft mbH4,840$877.3K0.00%−121−2.4%Reduced
Jefferies Financial Group Inc.4,758$862.4K0.01%−33,335−87.5%Reduced
Dark Forest Capital Management LP4,628$838.8K0.04%−5,045−52.2%Reduced
AIA Group Ltd4,573$828.9K0.01%−2,990−39.5%Reduced
Federation des caisses Desjardins du Quebec4,507$816.9K0.00%−887−16.4%Reduced
Ancora Advisors, LLC4,339$786.4K0.02%+817+23.2%Added
Brevan Howard Capital Management LP4,288$777.2K0.01%−29,654−87.4%Reduced
PDT Partners, LLC4,280$775.8K0.05%+4,280New
IFP Advisors, Inc4,266$773.2K0.02%+3,796+807.7%Added
Caerus Investment Advisors, LLC4,263$772.7K0.26%+2,299+117.1%Added
Mutual of America Capital Management LLC4,249$770.1K0.01%+64+1.5%Added
Hennion & Walsh Asset Management, Inc.4,249$770.1K0.03%+544+14.7%Added
TD Asset Management Inc4,188$759.1K0.00%−91,852−95.6%Reduced
Capstone Investment Advisors, LLC4,182$758.0K0.01%+2,949+239.2%Added
Odyssean, LLC4,157$753.5K0.54%+4,157New
Purpose Unlimited Inc.4,054$734.8K0.03%+4,054New
JustInvest LLC3,986$722.5K0.01%+271+7.3%Added
Nisa Investment Advisors, LLC3,937$713.6K0.00%+138+3.6%Added
Public Employees Retirement Association of Colorado3,908$708.0K0.00%00.0%Unchanged
Sivia Capital Partners, LLC3,881$703.4K0.14%+3,881New
LPL Financial LLC3,874$702.2K0.00%−1,910−33.0%Reduced
Fox Run Management, L.L.C.3,816$691.6K0.11%−4,888−56.2%Reduced
Chicago Partners Investment Group LLC3,891$667.4K0.02%+2,579+196.6%Added
US Bancorp3,586$650.0K0.00%−517−12.6%Reduced
RNC Capital Management LLC3,583$649.4K0.03%−2,182−37.8%Reduced
CIBC Private Wealth Group, LLC3,515$637.0K0.00%−878−20.0%Reduced
New York Life Investment Management LLC3,455$626.2K0.01%−291−7.8%Reduced
Advisor Group Holdings, Inc.3,442$624.3K0.00%−2,382−40.9%Reduced
Panagora Asset Management Inc3,430$621.7K0.00%+3,430New
Jackson Thornton Asset Management, LLC3,330$604.1K0.06%+717+27.4%Added
Parcion Private Wealth LLC3,330$603.6K0.04%+3,330New
New Age Alpha Advisors, LLC3,315$600.8K0.03%+3,315New
Jacobs Levy Equity Management, Inc3,314$600.7K0.00%+3,314New
Keybank National Association3,241$587.4K0.00%−551−14.5%Reduced
Lido Advisors, LLC3,058$553.8K0.00%+642+26.6%Added
Larson Financial Group LLC3,044$551.6K0.02%+265+9.5%Added
Wiley Bros.-Aintree Capital, LLC3,207$548.6K0.00%−410−11.3%Reduced
MYDA Advisors LLC3,000$543.8K0.15%+1,485+98.0%Added
Inspire Advisors, LLC2,990$542.0K0.05%−37−1.2%Reduced
RMB Capital Management, LLC2,990$541.9K0.01%+2,990New
Bessemer Group Inc2,976$540.0K0.00%+2,941+8,402.9%Added
Formidable Asset Management, LLC2,963$537.0K0.08%00.0%Unchanged
HighTower Advisors, LLC2,907$526.9K0.00%+1,752+151.7%Added
Warren Averett Asset Management, LLC2,900$525.6K0.00%+2,900New
Aviva PLC2,881$522.2K0.00%+271+10.4%Added
Qsemble Capital Management, LP2,858$518.0K0.04%−5,061−63.9%Reduced
HSBC Holdings PLC2,844$517.2K0.00%−1,795,922−99.8%Reduced
Lighthouse Investment Partners, LLC2,835$513.8K0.02%+2,835New
EverSource Wealth Advisors, LLC2,826$512.2K0.02%+2,183+339.5%Added
Axq Capital, LP2,813$509.9K0.11%+242+9.4%Added
Waddell & Associates, LLC2,772$502.4K0.03%+2,772New
Nia Impact Advisors, LLC2,665$482.9K0.16%−775−22.5%Reduced
Rothschild Investment LLC2,622$475.2K0.03%+886+51.0%Added
denkapparat Operations GmbH2,574$466.5K0.25%+2,574New
HB Wealth Management, LLC2,564$464.7K0.00%+2,564New
waypoint wealth counsel2,540$460.4K0.17%+2,540New
GWM Advisors LLC2,526$458.0K0.00%+1,288+104.0%Added
Transcend Wealth Collective, LLC2,519$456.6K0.04%+2,519New
Envestnet Asset Management Inc2,447$443.5K0.00%−20,851−89.5%Reduced
Citizens Financial Group Inc2,439$442.0K0.01%+260+11.9%Added
Financial Advisory Corp2,424$439.0K0.12%+80+3.4%Added
Assetmark, Inc2,409$436.6K0.00%−272−10.1%Reduced
Clearstead Advisors, LLC2,382$431.8K0.01%+1,940+438.9%Added
Diversified Trust Co2,377$430.8K0.01%+2,377New
Amica Mutual Insurance Co2,352$426.0K0.04%+401+20.6%Added
Evoke Wealth, LLC2,346$425.1K0.01%+2,346New
Reynders McVeigh Capital Management, LLC2,290$415.0K0.02%−500−17.9%Reduced
CIBC Asset Management Inc2,283$413.8K0.00%−1,210−34.6%Reduced
Sentinus, LLC2,276$412.5K0.04%+2,276New
Unique Wealth Strategies, LLC2,274$412.2K0.16%+376+19.8%Added
Profund Advisors LLC2,266$410.7K0.01%+2,266New
Fifth Third Bancorp2,246$407.1K0.00%−1,077−32.4%Reduced
Fieldview Capital Management, LLC2,185$396.0K0.07%+2,185New
Sterling Capital Management LLC2,156$390.8K0.01%−98−4.3%Reduced
Sym Financial Corp2,149$389.5K0.04%+2,149New
Perigon Wealth Management, LLC2,100$380.6K0.01%+2,100New
Kaufman Rossin Wealth, LLC2,074$375.9K0.20%+2,074New
Capital Performance Advisors LLP2,055$372.5K0.03%+2,055New
X-Square Capital, LLC2,027$367.0K0.12%+154+8.2%Added
Ashford Capital Management Inc2,000$362.5K0.04%00.0%Unchanged
Groupama Asset Managment1,995$361.6K0.01%−206−9.4%Reduced
RMR Wealth Builders1,958$354.9K0.03%−126−6.0%Reduced
Horizon Kinetics Asset Management LLC1,950$353.4K0.00%00.0%Unchanged
Knollwood Investment Advisory, LLC1,934$350.5K0.03%00.0%Unchanged
Xponance, Inc.1,931$350.0K0.00%+47+2.5%Added
Utah Retirement Systems1,927$349.3K0.00%00.0%Unchanged
O'Shaughnessy Asset Management, LLC1,908$345.8K0.00%+529+38.4%Added
Dundas Partners LLP1,902$344.7K0.02%−337−15.1%Reduced
Sequoia Financial Advisors, LLC1,877$340.2K0.00%−270−12.6%Reduced
Jones Financial Companies LLLP1,848$334.9K0.00%+172+10.3%Added
Banque Pictet & Cie SA1,820$329.9K0.00%+175+10.6%Added
The PNC Financial Services Group, Inc.1,818$329.5K0.00%−1,631−47.3%Reduced
Allegiance Financial Group Advisory Services LLC1,818$329.5K0.07%+1,818New
Pathstone Holdings, LLC1,757$318.5K0.00%−339−16.2%Reduced