MARKETAXESS HLDGS INC

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MKTX·57060D108·US·Common Stock·Financial Services - Capital Markets-13D/G

MKTX (MARKETAXESS HLDGS INC) is held by 191 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($453.9M), PRIMECAP MANAGEMENT CO/CA/ ($397.8M), VANGUARD PORTFOLIO MANAGEMENT LLC ($238.4M). Net institutional sentiment: Mixed.

191

Holders

(17 Elite)

$3.5B

Total Value

45% (196)

Consensus

89 buying - 107 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)68

Insider (Form 4)73

Activist (13D/13G)55

Congressional (STOCK Act)31

Holder Quality

55

★★★★★

Elite

55

★★★★

Strong

63

★★★

Solid

21

★★

Below

72

★

Weak

Held by 191 funds

17 elite

Who's Trading

Source dates: Price Sep 21, 2026 · Insiders Sep 11, 2026 · Activists Aug 14, 2026 · Congress none

InsiderPSPintoff ScottSell $16KSep 10, 2026

InsiderCJCruger William Frank Jr.Sell $1.0MSep 10, 2026

ActivistNRNorth Reef Capital Management LP9.6%Aug 14, 2026

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Top Holders

Top Holders (191)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	4M(-1.9%)	$453.9M	0.0%	-16.56%	0
PRIMECAP MANAGEMENT CO/CA/	Increased	3.5M(+4.7%)	$397.8M	0.2%	-17.79%	39
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Decreased	2.1M(-2.9%)	$238.4M	0.0%	+0.06%	0
AQR CAPITAL MANAGEMENT LLC	Decreased	2M(-25.9%)	$222.8M	0.1%	-13.29%	0
VAVANGUARD CAPITAL MANAGEMENT LLC	Decreased	1.5M(-3.9%)	$175.5M	0.0%	+0.06%	0
FMR LLC	Decreased	1.4M(-7.5%)	$159.5M	0.0%	-25.46%	0
STATE STREET CORP	Increased	1.3M(+0.1%)	$145.4M	0.0%	-39.92%	30
Neuberger Berman Group LLC	Increased	1.2M(+27.3%)	$139.6M	0.1%	+2.51%	38
GOLDMAN SACHS GROUP INC	Increased	1M(+102.6%)	$117M	0.0%	+12.46%	49
BANK OF MONTREAL /CAN/	Decreased	1M(-0.3%)	$115.4M	0.0%	-8.31%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	994,772(+15.3%)	$112.9M	0.0%	-36.74%	35
DIMENSIONAL FUND ADVISORS LP	Increased	597,894(+2.8%)	$67.8M	0.0%	-35.94%	30
TWO SIGMA INVESTMENTS, LP	Increased	543,890(+3.8%)	$61.7M	0.0%	-13.94%	31
CITADEL ADVISORS LLC	Increased	481,689(+486.3%)	$54.7M	0.0%	+27.71%	47
JPMORGAN CHASE & CO	Increased	438,001(+1.2%)	$48.3M	0.0%	-15.17%	30
MORGAN STANLEY	Decreased	422,864(-13.8%)	$48M	0.0%	-16.18%	0
LOS ANGELES CAPITAL MANAGEMENT LLC	Increased	392,065(+3992.1%)	$44.5M	0.2%	+41.42%	56
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Decreased	330,815(-2.3%)	$37.5M	0.0%	-31.15%	0
BANK OF AMERICA CORP /DE/	Increased	303,517(+15.0%)	$34.4M	0.0%	-12.50%	33
UBS Group AG	Increased	278,745(+2.4%)	$31.6M	0.0%	-12.12%	30

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Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer