MARKETAXESS HOLDINGS INC (MKTX) Institutional Ownership and Insiders Activity
MARKETAXESS HOLDINGS INC (MKTX) is widely held by institutional investors, with 382 firms reporting positions valued at approximately $4.46B based on SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is the largest disclosed holder, reporting approximately $453.94M in MKTX holdings in its latest filing.
Recent insider activity includes 6 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
382
Total Reported Value
$4.46B
Largest Holder
Blackrock, Inc.
Largest Position
$453.94M
Insider Transactions (90d)
6
Latest Filing Quarter
Q2 2026
New Institutional Positions
57
Funds Exiting Positions
120
Top Institutional Owners
View allInvestorReported Balance
- Blackrock, Inc.$453.94M
- Primecap Management Co/Ca/$397.77M
- North Reef Capital Management Lp$385.30M
- Vanguard Portfolio Management Llc$238.36M
- Aqr Capital Management Llc$222.76M
MKTX News
All news- Corebridge Financial Inc Q2 2026 Stock Holdings Analysis: Concentrated Position in MKTX
Aug 9, 2026 · valut.ai
Related MKTX Institutional Insights:
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- MKTX Top Institutional Shareholders
- MKTX Institutional Ownership Changes
- Financial Services Sector Institutional Ownership
- Financial Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Financial Services Stocks By Institutional Investors
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- MKTX Insider Trading & SEC Form 4 Activity
- MKTX Articles
- Top Institutional Investor Stock Rankings