Marketaxess Holdings Inc (MKTX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

37,109,000Shares Outstanding

36,595,278Shares held by institutions

$5,096,624,367Value of institutional holdings

98.62%Institutional ownership %

-7.57%Shares Changed QoQ

468No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Marketaxess Holdings Inc (NASDAQ:MKTX) appears in 467 institutional 13F filings for the quarter ending December 2025.

They owned 98.1% of outstanding stock in December 2025, down from 111.1% the prior quarter.
Their total shares held in MKTX decreased -7.61% quarter over quarter, and separately, investors owning Marketaxess Holdings decreased 8.25% from a year ago.
Among the 467 funds, 256 bought more Marketaxess Holdings shares, 169 sold down, and 42 held their ground.
Combined, these investors held 36.42Mn shares in MKTX for December 2025, down by 3.0Mn shares quarter on quarter, and down 2.44Mn shares year over year.
As of December 31, 2025, the biggest holder of Marketaxess Holdings is Assenagon Asset Management S.A. at 104.8K shares, representing 0.28% of shares outstanding.
The most significant purchases of MKTX for the quarter ending December 2025 came from WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (56.17K), Assenagon Asset Management S.A. (41.57K), Alpha Omega Wealth Management LLC (3.58K), IFP Advisors, Inc (3.48K), Diversified Trust Co (3.28K).
Leading sellers of Marketaxess Holdings shares for the quarter ending December 2025 were SG Americas Securities, LLC (5.4K), Oak Thistle LLC (2.52K), Pallas Capital Advisors LLC (2.49K), NorthCrest Asset Manangement, LLC (2.13K), EVOLVE PRIVATE WEALTH, LLC (2.04K).
Marketaxess Holdings's 10 largest shareholders as of December 2025 include Assenagon Asset Management S.A. (104.8K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (56.17K), State of Alaska, Department of Revenue (18.39K), Louisiana State Employees Retirement System (16.5K), Merit Financial Group, LLC (13.71K), EXCHANGE TRADED CONCEPTS, LLC (13.03K), Pallas Capital Advisors LLC (11.13K), Alpha Omega Wealth Management LLC (10.9K), YOUSIF CAPITAL MANAGEMENT, LLC (10.12K), Krilogy Financial LLC (7.88K) per Business Quant data.

468 Institutional Holders

36,595,278 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	3,839,889	-14,423	-0.37%	$695,979,882.00
BlackRock, Inc.	31 Dec, 2025	3,746,472	1,896,063	102.47%	$679,048,052.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	3,175,425	944,830	42.36%	$575,545,786.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,558,097	1,607,009	168.97%	$463,655,158.00
FMR LLC	31 Dec, 2025	2,004,625	-139,296	-6.50%	$363,338,135.00
North Reef Capital Management LP	31 Dec, 2025	1,609,330	697,972	76.59%	$291,691,062.00
State Street Corp	31 Dec, 2025	1,248,314	-72,343	-5.48%	$226,256,913.00
VAN ECK ASSOCIATES CORP	31 Dec, 2025	1,214,967	-733,666	-37.65%	$220,212.00
GUARDCAP ASSET MANAGEMENT Ltd	31 Dec, 2025	1,153,578	-207,686	-15.26%	$208,976,430.00
Bank Of Montreal /Can/	31 Dec, 2025	951,024	932,687	5,086.37%	$172,373,029.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	833,067	2,071	0.25%	$151,018,471.00
CITADEL ADVISORS LLC	31 Dec, 2025	625,208	315,122	101.62%	$113,318,950.00
Neuberger Berman Group LLC	31 Dec, 2025	549,639	547,573	26,504.02%	$99,622,069.00
Jpmorgan Chase & Co	31 Dec, 2025	545,364	-350,486	-39.12%	$98,847,267.00
Findlay Park Partners LLP	31 Dec, 2025	536,400	-108,300	-16.80%	$97,222,500.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	533,527	169,143	46.42%	$96,701,769.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	526,981	5,852	1.12%	$95,517,982.00
NORGES BANK	31 Dec, 2025	503,855	503,855	0.00%	$91,323,719.00
Morgan Stanley	31 Dec, 2025	424,877	-124,146	-22.61%	$77,009,309.00
BNP PARIBAS FINANCIAL MARKETS	31 Dec, 2025	375,735	-110,371	-22.71%	$68,101,969.00

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