Company · Ownership research

MARKETAXESS HOLDINGS INC MKTX

CIK 0001278021 · CUSIP 57060D108

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 57060D108 (MKTX), not CUSIP 57060D908 (MKTX), CUSIP 57060D958 (MKTX), and does not merge CUSIPs.

This page lists the top 20 of 160 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$162.07M 988,561 shares	0.01%	-6.21K(-0.60%)Reduced	SEC filing ↗ Nov 6, 2026	▾
02	GUARDCAP ASSET MANAGEMENT Ltd CIK 1732008 · View history	$82.59M 503,015 shares	5.64%	-33.31K(-6.20%)Reduced	SEC filing ↗ Nov 6, 2026	▾
03	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$69.89M 426,360 shares	0.01%	-171.53K(-28.70%)Reduced	SEC filing ↗ Nov 4, 2026	▾
04	CITIGROUP INC CIK 831001 · View history	$51.71M 315,444 shares	0.02%	+250.68K(+387.10%)Added	SEC filing ↗ Nov 4, 2026	▾
05	Bank of New York Mellon Corp CIK 1390777 · View history	$37.66M 229,749 shares	0.01%	-27.89K(-10.80%)Reduced	SEC filing ↗ Nov 5, 2026	▾
06	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$27.37M 166,972 shares	0.01%	-6.34K(-3.70%)Reduced	SEC filing ↗ Nov 2, 2026	▾
07	Amundi CIK 1330387 · View history	$19.71M 120,261 shares	0.00%	+90.85K(+308.90%)Added	SEC filing ↗ Nov 6, 2026	▾
08	ProShare Advisors LLC CIK 1357955 · View history	$14.72M 89,772 shares	0.02%	+89.77KNew	SEC filing ↗ Oct 29, 2026	▾
09	Alpha Omega Wealth Management LLC CIK 1665633 · View history	$10.01M 61,058 shares	1.51%	-395(-0.60%)Reduced	SEC filing ↗ Oct 23, 2026	▾
10	ABC ARBITRAGE SA CIK 2049221 · View history	$7.58M 46,236 shares	0.74%	+46.24KNew	SEC filing ↗ Oct 23, 2026	▾
11	New York Life Investment Management LLC CIK 1133639 · View history	$4.92M 30,027 shares	0.03%	+25.55K(+571.40%)Added	SEC filing ↗ Nov 4, 2026	▾
12	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC CIK 1632972 · View history	$4.49M 29,145 shares	0.01%	+1.81K(+6.60%)Added	SEC filing ↗ Oct 13, 2026	▾
13	NEW YORK STATE TEACHERS RETIREMENT SYSTEM CIK 314969 · View history	$4.46M 27,187 shares	0.01%	-100(-0.40%)Reduced	SEC filing ↗ Oct 22, 2026	▾
14	NUANCE INVESTMENTS, LLC CIK 1473182 · View history	$4.21M 25,690 shares	0.77%	+25.69KNew	SEC filing ↗ Nov 6, 2026	▾
15	Thrivent Financial for Lutherans CIK 314984 · View history	$3.68M 22,449 shares	0.01%	-7.22K(-24.30%)Reduced	SEC filing ↗ Nov 5, 2026	▾
16	COMMONWEALTH EQUITY SERVICES, LLC CIK 312272 · View history	$3.27M 19,942 shares	0.00%	+19.94KNew	SEC filing ↗ Nov 2, 2026	▾
17	Illinois Municipal Retirement Fund CIK 1541910 · View history	$2.99M 18,214 shares	0.03%	-3.77K(-17.20%)Reduced	SEC filing ↗ Nov 5, 2026	▾
18	Creative Planning CIK 1540235 · View history	$2.79M 17,024 shares	0.00%	-3.42K(-16.70%)Reduced	SEC filing ↗ Nov 2, 2026	▾
19	BAHL & GAYNOR INC CIK 872259 · View history	$2.70M 16,478 shares	0.01%	-15.20K(-48.00%)Reduced	SEC filing ↗ Nov 5, 2026	▾
20	ALPS ADVISORS INC CIK 1376113 · View history	$2.48M 15,104 shares	0.01%	-14.66K(-49.30%)Reduced	SEC filing ↗ Nov 3, 2026	▾

Showing 20 / 160 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

160

Cancelled or null records excluded

Disclosed shares

3,488,181

Not deduplicated across managers

Disclosed value

$571.33M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

MARKETAXESS HOLDINGS INC · Q3 2026

Explore all 160 reporting institutions.

This page includes 20 of 160 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.