Marketaxess Holdings Inc (MKTX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

273,511Shares held by institutions

$44,967,944Value of institutional holdings

99.19%Institutional ownership %

-0.09%Shares Changed QoQ

523No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Marketaxess Holdings Inc (NASDAQ:MKTX) has 467 institutional investors with active 13F positions as of December 2025.

Their combined ownership stood at 98.1% of outstanding shares in December 2025, down from 111.1% in September 2025.
Their total shares held in MKTX decreased -7.61% from the prior quarter, while the number of investors in Marketaxess Holdings decreased 8.25% year over year.
During the quarter, 256 of these 467 funds increased positions in MKTX, 169 reduced exposure, and 42 held steady.
In total, institutional investors held 36.42Mn shares in Marketaxess Holdings as of December 2025, down by 3.0Mn shares quarter on quarter, and down 2.44Mn shares year over year.
VANGUARD GROUP INC holds the largest position in MKTX at 3.84Mn shares as of December 31, 2025, or 10.35% of shares outstanding.
The biggest buyers of Marketaxess Holdings for the quarter ending December 2025 included BlackRock, Inc. (1.9Mn), AQR CAPITAL MANAGEMENT LLC (1.61Mn), PRIMECAP MANAGEMENT CO/CA/ (944.83K), Bank Of Montreal /Can/ (932.69K), North Reef Capital Management LP (697.97K).
Leading sellers of Marketaxess Holdings shares for the quarter ending December 2025 were Lombard Odier Asset Management (Europe) Ltd (4.59Mn), HSBC HOLDINGS PLC (1.8Mn), T. Rowe Price Investment Management, Inc. (1.15Mn), VAN ECK ASSOCIATES CORP (733.67K), Jpmorgan Chase & Co (350.49K).
Per Business Quant, the top 10 investors in MKTX for the quarter ending December 2025 include VANGUARD GROUP INC (3.84Mn), BlackRock, Inc. (3.75Mn), PRIMECAP MANAGEMENT CO/CA/ (3.18Mn), AQR CAPITAL MANAGEMENT LLC (2.56Mn), FMR LLC (2.0Mn), North Reef Capital Management LP (1.61Mn), State Street Corp (1.25Mn), VAN ECK ASSOCIATES CORP (1.21Mn), GUARDCAP ASSET MANAGEMENT Ltd (1.15Mn), Bank Of Montreal /Can/ (951.02K).

468 Institutional Holders

273,511 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	1,896,063	102.47%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-14,423	-0.37%	$0.00
North Reef Capital Management LP	31 Dec, 2025	697,972	76.59%	$0.00
Barclays Plc	31 Dec, 2025	-148,030	-84.14%	$0.00
PRIMECAP MANAGEMENT CO/CA/	31 Dec, 2025	944,830	42.36%	$0.00
GUARDCAP ASSET MANAGEMENT Ltd	31 Dec, 2025	-207,686	-15.26%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	-1,793,078	-99.68%	$0.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	1,607,009	168.97%	$0.00
RDST Capital LLC	31 Dec, 2025	-252,397	-44.82%	$0.00
Purpose Unlimited Inc.	31 Dec, 2025	4,054	0.00%	$0.00
FMR LLC	31 Dec, 2025	-139,296	-6.50%	$0.00
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	-1,149,824	-83.89%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	35	24.82%	$0.00
State Street Corp	31 Dec, 2025	-72,343	-5.48%	$0.00
Holocene Advisors, LP	31 Dec, 2025	-65,590	-23.39%	$0.00
VAN ECK ASSOCIATES CORP	31 Dec, 2025	-733,666	-37.65%	$0.00
IEQ CAPITAL, LLC	31 Dec, 2025	156,664	479.65%	$0.00
Bank Of Montreal /Can/	31 Dec, 2025	932,687	5,086.37%	$0.00
Walleye Capital LLC	31 Dec, 2025	153,407	1,003.91%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,071	0.25%	$0.00

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