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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 2021

Institutional positions in Marketaxess Holdings Inc as of Jun 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
551
−34 vs. Q1 2021
Shares held
36.2M
+1.35M (+3.9%) vs. Q1 2021
Total value
$16.8B
−$588.4M (−3.4%) vs. Q1 2021
New holders
49
194 more added
Sold out
83
223 more reduced

4 institutions that held it in Q1 2021 haven't filed for Q2 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2021: 551 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 2021: $16.8B
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 2021

Shares, value and share of portfolio for each institution holding Marketaxess Holdings Inc; share changes are against Q1 2021.

Institutions holding MKTX in Q2 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Bank of Nova Scotia6,716$3.11M0.01%−1,214−15.3%Reduced
Guggenheim Capital LLC6,703$3.11M0.02%+1,238+22.7%Added
Hartford Investment Management Co6,677$3.10M0.08%+574+9.4%Added
Banque Cantonale Vaudoise6,600$3.06M0.14%+3,500+112.9%Added
Atria Investments LLC6,504$3.02M0.06%+184+2.9%Added
Metropolitan Life Insurance Co6,339$2.94M0.04%−171−2.6%Reduced
Marks Group Wealth Management, Inc6,345$2.93M0.40%+2,166+51.8%Added
Texas Permanent School Fund6,310$2.92M0.03%−36−0.6%Reduced
Taikang Asset Management (Hong Kong) Co Ltd6,290$2.92M0.45%+1,783+39.6%Added
Blair William & Co6,225$2.89M0.01%−230−3.6%Reduced
Worldquant Millennium Advisors LLC6,016$2.79M0.06%+6,016New
Mackay Shields LLC5,965$2.77M0.03%−335−5.3%Reduced
Public Sector Pension Investment Board5,959$2.76M0.02%+2,179+57.6%Added
Xponance, Inc.5,915$2.74M0.05%+451+8.3%Added
SEI Investments Co6,156$2.74M0.01%−2,515−29.0%Reduced
Seeyond5,844$2.71M0.25%+26+0.4%Added
Handelsbanken Fonder AB5,744$2.66M0.01%−1,200−17.3%Reduced
GAM Holding AG5,688$2.64M0.12%−23−0.4%Reduced
Brown Capital Management LLC5,560$2.58M0.02%+1,136+25.7%Added
Crossmark Global Holdings, Inc.5,528$2.56M0.06%−830−13.1%Reduced
Banco Bilbao Vizcaya Argentaria, S.A.5,309$2.46M0.04%−2,340−30.6%Reduced
Fifth Third Bancorp5,160$2.39M0.01%−20,846−80.2%Reduced
IFM Investors Pty Ltd5,159$2.39M0.05%+1,254+32.1%Added
Horizon Kinetics Asset Management LLC5,154$2.39M0.05%+154+3.1%Added
SG Americas Securities, LLC5,044$2.34M0.01%+1,310+35.1%Added
Mutual of America Capital Management LLC4,957$2.30M0.02%+64+1.3%Added
Thrivent Financial for Lutherans4,832$2.24M0.00%+20.0%Added
Skylands Capital, LLC4,800$2.23M0.26%+650+15.7%Added
Commonwealth of Pennsylvania Public School Empls Retrmt Sys4,759$2.21M0.02%+7+0.1%Added
Hedeker Wealth, LLC4,700$2.18M0.68%+734+18.5%Added
Arcadia Investment Management Corp4,680$2.17M0.41%−90−1.9%Reduced
Security Asset Management4,649$2.15M0.85%+20.0%Added
Paragon Advisors, LLC4,595$2.13M1.00%+223+5.1%Added
Royce & Associates LP4,581$2.12M0.01%00.0%Unchanged
Robeco Institutional Asset Management B.V.4,428$2.05M0.00%−62,873−93.4%Reduced
Cetera Investment Advisers4,414$2.05M0.03%+1,968+80.5%Added
Terry L. Blaker4,308$2.00M0.13%+262+6.5%Added
The PNC Financial Services Group, Inc.4,224$1.96M0.00%−716−14.5%Reduced
Van Eck Associates Corp4,095$1.90M0.00%+540+15.2%Added
Nissay Asset Management Corp4,042$1.87M0.02%−217−5.1%Reduced
Raymond James Financial Services Advisors, Inc.4,010$1.86M0.00%−51−1.3%Reduced
Duality Advisers, LP3,937$1.82M0.16%+2,704+219.3%Added
Bridgeway Capital Management, LLC3,910$1.81M0.03%−50−1.3%Reduced
Shell Asset Management Co3,861$1.79M0.03%−407−9.5%Reduced
Mirae Asset Global Investments Co., Ltd.3,827$1.77M0.00%+859+28.9%Added
First Washington CORP3,778$1.75M0.65%00.0%Unchanged
CIBC World Markets Inc.3,759$1.74M0.01%+1,748+86.9%Added
Jane Street Group, LLC3,554$1.65M0.00%+2,675+304.3%Added
Optimal Asset Management, Inc.3,432$1.59M0.19%00.0%Unchanged
AlphaCrest Capital Management LLC3,426$1.59M0.07%−250−6.8%Reduced
Fiera Capital Corp3,371$1.56M0.00%+2,011+147.9%Added
Paloma Partners Management Co3,324$1.54M0.04%−839−20.2%Reduced
Securian Asset Management, Inc3,319$1.54M0.03%−100−2.9%Reduced
First Trust Advisors LP3,316$1.54M0.00%−17,451−84.0%Reduced
Bradley Mark J.3,291$1.53M1.02%−275−7.7%Reduced
Catalyst Capital Advisors LLC3,280$1.52M0.08%00.0%Unchanged
Jacobs Levy Equity Management, Inc3,239$1.50M0.01%+1,715+112.5%Added
Banco Santander, S.A.3,237$1.50M0.01%00.0%Unchanged
Congress Asset Management Co3,234$1.50M0.01%+18+0.6%Added
Mackenzie Financial Corp3,232$1.50M0.00%−1,591−33.0%Reduced
DekaBank Deutsche Girozentrale3,168$1.48M0.00%−243−7.1%Reduced
Federation des caisses Desjardins du Quebec3,189$1.48M0.01%+123+4.0%Added
ING Groep NV3,120$1.45M0.02%+3,120New
Vident Investment Advisory, LLC3,075$1.43M0.04%−602−16.4%Reduced
Aigen Investment Management, LP3,053$1.42M0.25%+3,053New
Tower Research Capital LLC (TRC)2,931$1.36M0.04%+246+9.2%Added
Simplex Trading, LLC2,929$1.36M0.05%+781+36.4%Added
HighTower Advisors, LLC2,879$1.33M0.00%−33−1.1%Reduced
Maryland State Retirement & Pension System2,820$1.33M0.04%00.0%Unchanged
Wealthfront Advisers LLC2,831$1.31M0.01%−1,110−28.2%Reduced
Horizon Investments, LLC2,819$1.30M0.04%+2,139+314.6%Added
Pearl River Capital, LLC2,807$1.30M0.36%+2,807New
Davidson Capital Management Inc.2,670$1.24M0.60%+473+21.5%Added
People's United Financial, Inc.2,649$1.23M0.03%−810−23.4%Reduced
Campbell Newman Asset Management Inc2,649$1.23M0.12%+138+5.5%Added
JustInvest LLC2,638$1.22M0.13%+2,638New
Sumitomo Mitsui DS Asset Management Company, Ltd2,623$1.22M0.03%−15−0.6%Reduced
Cavalier Investments, LLC2,579$1.20M0.43%00.0%Unchanged
New Mexico Educational Retirement Board2,550$1.18M0.04%+100+4.1%Added
Natixis2,541$1.18M0.01%+3+0.1%Added
SRN Advisors, LLC2,505$1.16M0.40%−158−5.9%Reduced
Louisiana State Employees Retirement System2,400$1.11M0.03%00.0%Unchanged
Proequities, Inc.2,386$1.11M0.07%+226+10.5%Added
Cim Investment Mangement Inc2,310$1.07M0.33%+946+69.4%Added
Pacer Advisors, Inc.2,297$1.06M0.02%+18+0.8%Added
Sentry Investment Management LLC2,286$1.06M0.27%+1,916+517.8%Added
Flagship Harbor Advisors, LLC2,243$1.04M0.11%−104−4.4%Reduced
Fred Alger Management, LLC2,235$1.04M0.00%−3,511−61.1%Reduced
XTX Topco Ltd2,228$1.03M0.35%+1,623+268.3%Added
Kentucky Retirement Systems2,212$1.02M0.05%−124−5.3%Reduced
GW&K Investment Management, LLC2,184$1.01M0.01%−78−3.4%Reduced
AGF Investments LLC2,180$1.01M0.10%+149+7.3%Added
Candriam Luxembourg S.C.A.2,176$1.01M0.01%+2,176New
Illinois Municipal Retirement Fund2,162$1.00M0.04%−10,004−82.2%Reduced
Nordea Investment Management AB2,156$1.00M0.00%−24−1.1%Reduced
Panagora Asset Management Inc2,109$978.0K0.01%−52,949−96.2%Reduced
Magnetar Financial LLC2,100$974.0K0.01%+2,100New
Citizens Financial Group Inc2,080$964.0K0.04%+2,080New
Algert Global LLC2,074$961.0K0.32%+2,074New
Lazard Asset Management LLC2,072$960.0K0.00%−1,831−46.9%Reduced