Question 1

Who owns MKTX?

Accepted Answer

MARKETAXESS HLDGS INC (MKTX) is held by 193 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Question 2

Are institutions buying or selling MKTX?

Accepted Answer

In Q1 2026, 117 institutions opened or increased positions in MARKETAXESS HLDGS INC while 92 reduced or exited — a net buying quarter.

Question 3

What is the Smart Money Verdict on MKTX?

Accepted Answer

HoldingsIntel scores MARKETAXESS HLDGS INC across four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) — with 4 of the 4 carrying data for MKTX. In Q1 2026, the institutional leg showed net inflows: 117 buying versus 92 selling.

Question 4

How many hedge funds hold MKTX?

Accepted Answer

193 institutional investors report holding MARKETAXESS HLDGS INC (MKTX) as of Q1 2026, based on SEC 13F filings.

Question 5

Is institutional money flowing into MKTX?

Accepted Answer

As of Q1 2026, tracked institutions in MARKETAXESS HLDGS INC show 117 buyers versus 92 sellers — net inflows.

Question 6

Are Congress members and hedge funds both buying MKTX?

Accepted Answer

Yes — in the latest quarter, 1 members of Congress and 117 institutional investors bought MARKETAXESS HLDGS INC. HoldingsIntel cross-checks STOCK Act disclosures against 13F filings to surface these overlaps.

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	4.1M(+8.8%)	$672.3M	0.0%	-19.22%	34
PRIMECAP MANAGEMENT CO/CA/	Increased	3.3M(+5.4%)	$552.2M	0.4%	-22.12%	40
AQR CAPITAL MANAGEMENT LLC	Increased	2.7M(+4.9%)	$442.8M	0.2%	-15.63%	39
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	2.2M	$357M	0.0%	-16.05%	43
VAVANGUARD CAPITAL MANAGEMENT LLC	New	1.6M	$265.5M	0.0%	-16.05%	43
FMR LLC	Decreased	1.5M(-24.2%)	$250.7M	0.0%	-26.63%	0
STATE STREET CORP	Increased	1.3M(+2.6%)	$211.3M	0.0%	-41.25%	31
MILLENNIUM MANAGEMENT LLC	Increased	1.1M(+260.4%)	$179.4M	0.1%	-16.90%	49
BANK OF MONTREAL /CAN/	Increased	1M(+7.3%)	$168.4M	0.1%	-11.61%	33
Neuberger Berman Group LLC	Increased	966,029(+75.8%)	$159.4M	0.1%	-13.25%	55
GEODE CAPITAL MANAGEMENT, LLC	Increased	862,987(+3.6%)	$142.4M	0.0%	-35.70%	31
DIMENSIONAL FUND ADVISORS LP	Increased	581,484(+10.3%)	$95.9M	0.0%	-38.47%	33
TWO SIGMA INVESTMENTS, LP	Decreased	524,024(-1.8%)	$86.5M	0.1%	-17.29%	0
GOLDMAN SACHS GROUP INC	Increased	509,043(+194.9%)	$84M	0.0%	-18.53%	48
MORGAN STANLEY	Increased	490,537(+15.4%)	$80.9M	0.0%	-19.30%	34
Findlay Park Partners LLP	Decreased	480,600(-10.4%)	$79.3M	1.1%	-34.47%	0
JPMORGAN CHASE & CO	Decreased	432,826(-20.6%)	$71.3M	0.0%	-23.47%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	338,507(+6.3%)	$55.8M	0.0%	-32.92%	31
Walleye Capital LLC	Increased	332,723(+97.2%)	$54.9M	0.2%	-14.29%	56
BNP PARIBAS FINANCIAL MARKETS	Decreased	319,302(-15.0%)	$52.7M	0.0%	-13.73%	0

MARKETAXESS HLDGS INC

Smart Money Verdict

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MARKETAXESS HLDGS INC

Smart Money Verdict

Who's Trading

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