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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, Q3 2021

Institutional positions in Marketaxess Holdings Inc as of Sep 30, 2021. 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
508
−37 vs. Q2 2021
Shares held
36.5M
+431.1K (+1.2%) vs. Q2 2021
Total value
$15.3B
−$1.35B (−8.1%) vs. Q2 2021
New holders
30
195 more added
Sold out
67
197 more reduced

6 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2021: 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 holdersQ3 2021: 508 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 heldQ3 2021: $15.3B
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, Q3 2021

Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q2 2021.

Institutions holding MKTX in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Hancock Whitney Corp1,503$632.0K0.02%−421−21.9%Reduced
Rockefeller Capital Management L.P.1,555$653.0K0.00%+6+0.4%Added
Accretive Wealth Partners, LLC1,597$672.0K0.47%+108+7.3%Added
E. Ohman J:or Asset Management AB1,600$673.1K0.02%00.0%Unchanged
OPSEU Pension Plan Trust Fund1,656$678.0K0.17%−93−5.3%Reduced
Amica Retiree Medical Trust1,629$685.0K0.62%−122−7.0%Reduced
Fortis Capital Management LLC1,674$704.0K0.41%+492+41.6%Added
Vestcor Inc1,696$713.0K0.03%−76−4.3%Reduced
Arcadia Investment Management Corp1,699$715.0K0.13%−2,981−63.7%Reduced
Northwestern Mutual Investment Management Company, LLC1,726$726.0K0.01%+1+0.1%Added
Thrivent Financial for Lutherans1,729$727.0K0.00%−3,103−64.2%Reduced
Jacobs Levy Equity Management, Inc1,732$729.0K0.00%−1,507−46.5%Reduced
Vestmark Advisory Solutions, Inc.1,811$762.0K0.05%+263+17.0%Added
Horizon Investments, LLC1,821$765.0K0.02%−998−35.4%Reduced
Regions Financial Corp1,848$777.0K0.01%−156−7.8%Reduced
Penobscot Investment Management Company, Inc.1,860$782.0K0.12%−160−7.9%Reduced
Panagora Asset Management Inc1,863$784.0K0.00%−246−11.7%Reduced
Geneva Capital Management LLC1,888$794.0K0.01%+532+39.2%Added
Lazard Asset Management LLC1,895$796.0K0.00%−177−8.5%Reduced
X-Square Capital, LLC1,907$801.0K0.41%−154−7.5%Reduced
Canandaigua National Corp1,917$806.0K0.13%+17+0.9%Added
American Portfolios Advisors1,921$808.1K0.03%+1,915+31,916.7%Added
People's United Financial, Inc.1,951$821.0K0.02%−698−26.3%Reduced
Edgestream Partners, L.P.1,970$829.0K0.05%−8,667−81.5%Reduced
Baker Tilly Wealth Management, LLC1,974$830.0K0.11%+210+11.9%Added
AlphaCrest Capital Management LLC1,975$831.0K0.04%−1,451−42.4%Reduced
Marshall Financial Group LLC1,997$840.0K0.43%+143+7.7%Added
Leverage Partners Absolute Return Fund SPC2,000$841.0K0.81%−50−2.4%Reduced
Alamar Capital Management, LLC2,130$896.0K0.69%+259+13.8%Added
Pearl River Capital, LLC2,146$903.0K0.25%−661−23.5%Reduced
Illinois Municipal Retirement Fund2,162$910.0K0.03%00.0%Unchanged
GW&K Investment Management, LLC2,171$913.0K0.01%−13−0.6%Reduced
Candriam Luxembourg S.C.A.2,176$915.0K0.01%00.0%Unchanged
Nordea Investment Management AB2,156$922.0K0.00%00.0%Unchanged
Herold Advisors, Inc.2,202$926.0K0.36%+2,202New
Fred Alger Management, LLC2,231$939.0K0.00%−4−0.2%Reduced
Kentucky Retirement Systems2,274$957.0K0.05%+62+2.8%Added
Toroso Investments, LLC2,275$960.0K0.04%+1,633+254.4%Added
Cim Investment Mangement Inc2,297$966.0K0.30%−13−0.6%Reduced
Quantbot Technologies LP2,322$976.0K0.07%+1,625+233.1%Added
Anchor Investment Management, LLC2,320$976.0K0.14%+974+72.4%Added
Connor, Clark & Lunn Investment Management Ltd.2,387$1.00M0.01%−5,689−70.4%Reduced
Louisiana State Employees Retirement System2,400$1.01M0.02%00.0%Unchanged
The PNC Financial Services Group, Inc.2,406$1.01M0.00%−1,818−43.0%Reduced
Pacer Advisors, Inc.2,411$1.01M0.01%+114+5.0%Added
JustInvest LLC2,433$1.02M0.09%−205−7.8%Reduced
New Mexico Educational Retirement Board2,450$1.03M0.04%−100−3.9%Reduced
Proequities, Inc.2,472$1.04M0.06%+86+3.6%Added
Flagship Harbor Advisors, LLC2,243$1.04M0.11%00.0%Unchanged
Mason Capital Management LLC2,500$1.05M0.49%+1,750+233.3%Added
Sumitomo Mitsui DS Asset Management Company, Ltd2,590$1.09M0.03%−33−1.3%Reduced
Tributary Capital Management, LLC2,640$1.11M0.09%+1,000+61.0%Added
Parallax Volatility Advisers, L.P.2,747$1.16M0.01%+1,920+232.2%Added
Davidson Capital Management Inc.2,767$1.16M0.59%+97+3.6%Added
Campbell Newman Asset Management Inc2,798$1.18M0.12%+149+5.6%Added
Mackenzie Financial Corp2,847$1.20M0.00%−385−11.9%Reduced
Maryland State Retirement & Pension System2,820$1.21M0.03%00.0%Unchanged
Natixis2,885$1.21M0.00%+344+13.5%Added
Wealthfront Advisers LLC2,921$1.23M0.01%+90+3.2%Added
Simplex Trading, LLC2,829$1.31M0.05%−100−3.4%Reduced
Peloton Wealth Strategists3,145$1.32M0.54%+3,145New
Federation des caisses Desjardins du Quebec3,189$1.34M0.01%00.0%Unchanged
ING Groep NV3,190$1.34M0.02%+70+2.2%Added
DekaBank Deutsche Girozentrale3,234$1.37M0.00%+66+2.1%Added
Bradley Mark J.3,261$1.37M0.94%−30−0.9%Reduced
Securian Asset Management, Inc3,319$1.40M0.03%00.0%Unchanged
Congress Asset Management Co3,394$1.43M0.01%+160+4.9%Added
Optimal Asset Management, Inc.3,455$1.45M0.18%+23+0.7%Added
CIBC Asset Management Inc3,456$1.45M0.01%−4,201−54.9%Reduced
Raymond James Financial Services Advisors, Inc.3,513$1.48M0.00%−497−12.4%Reduced
Hartford Investment Management Co3,527$1.48M0.04%−3,150−47.2%Reduced
Jane Street Group, LLC3,761$1.58M0.00%+207+5.8%Added
Cavalier Investments, LLC3,762$1.58M0.50%+1,183+45.9%Added
First Washington CORP3,778$1.59M0.58%00.0%Unchanged
Paragon Advisors, LLC3,794$1.60M0.77%−801−17.4%Reduced
Vident Investment Advisory, LLC3,827$1.61M0.05%+752+24.5%Added
Bridgeway Capital Management, LLC3,910$1.65M0.03%00.0%Unchanged
LPL Financial LLC4,018$1.69M0.00%+2,951+276.6%Added
Skylands Capital, LLC4,150$1.75M0.22%−650−13.5%Reduced
Nissay Asset Management Corp4,172$1.75M0.01%+130+3.2%Added
Voloridge Investment Management, LLC4,223$1.78M0.01%−8,121−65.8%Reduced
Cetera Investment Advisers4,312$1.81M0.03%−102−2.3%Reduced
Mirae Asset Global Investments Co., Ltd.4,326$1.82M0.00%+499+13.0%Added
Seeyond4,345$1.83M0.18%−1,499−25.7%Reduced
Terry L. Blaker4,385$1.84M0.12%+77+1.8%Added
Van Eck Associates Corp4,481$1.89M0.00%+386+9.4%Added
Royce & Associates LP4,581$1.93M0.01%00.0%Unchanged
Security Asset Management4,684$1.97M0.80%+35+0.8%Added
SG Americas Securities, LLC4,694$1.98M0.01%−350−6.9%Reduced
Commonwealth of Pennsylvania Public School Empls Retrmt Sys4,762$2.00M0.02%+3+0.1%Added
Mutual of America Capital Management LLC4,987$2.10M0.02%+30+0.6%Added
Vontobel Holding Ltd.5,101$2.15M0.02%+4,223+481.0%Added
Horizon Kinetics Asset Management LLC5,154$2.17M0.05%00.0%Unchanged
IFM Investors Pty Ltd5,159$2.17M0.04%00.0%Unchanged
Fifth Third Bancorp5,197$2.19M0.01%+37+0.7%Added
Shell Asset Management Co5,209$2.19M0.05%+1,348+34.9%Added
MML Investors Services, LLC5,231$2.20M0.02%−3,075−37.0%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.5,327$2.24M0.04%+18+0.3%Added
D. E. Shaw & Co., Inc.5,335$2.25M0.00%+5,335New
Crossmark Global Holdings, Inc.5,358$2.25M0.05%−170−3.1%Reduced