There is a long list of 486 institutional holders of MKTX within the last two holding periods in our database of 13F filers, so we've sorted through to present to you just the top 50 institutional holders of MKTX by largest to smallest position reported in the institutional investor's latest 13F filing. In the institutional-holders-of-MKTX table below, the initial column indicates the name of each top institutional holder of MKTX, with a link to that fund's top holdings. The next columns indicate the amount of MKTX stock held by each of the institutional holders of MKTX, followed by the MKTX position size held by the institution, and finally the date of the quarterly 13F filing period the holdings data represents for that institution.

Holder	Amount	Position Size ($ in 1000's)	As of
Vanguard Group Inc.	4,526,422	$1,325,563	12/31/2023
MKTX	4,526,422	$1,325,563	12/31/2023
BlackRock Inc.	3,178,566	$930,843	12/31/2023
MKTX	3,178,566	$930,843	12/31/2023
GUARDCAP ASSET MANAGEMENT Ltd	1,861,077	$545,016	12/31/2023
MKTX	1,861,077	$545,016	12/31/2023
Royal Bank of Canada	1,770,203	$518,403	12/31/2023
MKTX	1,770,203	$518,403	12/31/2023
State Street Corp	1,699,125	$497,589	12/31/2023
MKTX	1,699,125	$497,589	12/31/2023
Van ECK Associates Corp	1,367,613	$400,506	12/31/2023
MKTX	1,367,613	$400,506	12/31/2023
T. Rowe Price Investment Management Inc.	1,228,330	$359,717	12/31/2023
MKTX	1,228,330	$359,717	12/31/2023
Primecap Management Co. CA	1,122,560	$328,742	12/31/2023
MKTX	1,122,560	$328,742	12/31/2023
Macquarie Group Ltd.	1,017,758	$298,051	12/31/2023
MKTX	1,017,758	$298,051	12/31/2023
Geode Capital Management LLC	892,419	$260,699	12/31/2023
MKTX	892,419	$260,699	12/31/2023
Price T Rowe Associates Inc. MD	868,831	$254,438	12/31/2023
MKTX	868,831	$254,438	12/31/2023
FMR LLC	790,524	$231,505	12/31/2023
MKTX	790,524	$231,505	12/31/2023
Ownership Capital B.V.	770,632	$225,680	12/31/2023
MKTX	770,632	$225,680	12/31/2023
Kayne Anderson Rudnick Investment Management LLC	658,991	$192,986	12/31/2023
MKTX	658,991	$192,986	12/31/2023
Invesco Ltd.	585,732	$171,532	12/31/2023
MKTX	585,732	$171,532	12/31/2023
Wasatch Advisors Inc.	716,689	$157,134	03/31/2024
MKTX	716,689	$157,134	03/31/2024
Baillie Gifford & Co.	511,007	$149,648	12/31/2023
MKTX	511,007	$149,648	12/31/2023
Artisan Partners Limited Partnership	479,133	$140,314	12/31/2023
MKTX	479,133	$140,314	12/31/2023
Norges Bank	438,911	$128,535	12/31/2023
MKTX	438,911	$128,535	12/31/2023
Eagle Asset Management Inc.	435,991	$127,680	12/31/2023
MKTX	435,991	$127,680	12/31/2023
Jackson Square Partners LLC	425,361	$124,567	12/31/2023
MKTX	425,361	$124,567	12/31/2023
Allianz Asset Management GmbH	368,439	$107,897	12/31/2023
MKTX	368,439	$107,897	12/31/2023
Northern Trust Corp	368,363	$107,875	12/31/2023
MKTX	368,363	$107,875	12/31/2023
Charles Schwab Investment Management Inc.	354,411	$103,789	12/31/2023
MKTX	354,411	$103,789	12/31/2023
Citadel Advisors LLC		$99,248	12/31/2023
MKTX	345,803	$101,268	12/31/2023
Put	32,000	$9,371	12/31/2023
Call	25,100	$7,351	12/31/2023
JPMorgan Chase & Co.	326,392	$95,584	12/31/2023
MKTX	326,392	$95,584	12/31/2023
Bank of New York Mellon Corp	425,718	$93,339	03/31/2024
MKTX	425,718	$93,339	03/31/2024
Morgan Stanley	294,605	$86,276	12/31/2023
MKTX	294,605	$86,276	12/31/2023
Legal & General Group Plc	285,809	$83,699	12/31/2023
MKTX	285,809	$83,699	12/31/2023
Neuberger Berman Group LLC	282,653	$82,775	12/31/2023
MKTX	282,653	$82,775	12/31/2023
Teacher Retirement System of Texas	272,870	$79,910	12/31/2023
MKTX	272,870	$79,910	12/31/2023
Marshall Wace LLP	255,948	$74,954	12/31/2023
MKTX	255,948	$74,954	12/31/2023
APG Asset Management N.V.	254,697	$74,588	12/31/2023
MKTX	254,697	$74,588	12/31/2023
UBS Asset Management Americas Inc.	239,200	$70,050	12/31/2023
MKTX	239,200	$70,050	12/31/2023
Baird Financial Group Inc.	228,480	$66,910	12/31/2023
MKTX	228,480	$66,910	12/31/2023
Stephens Investment Management Group LLC	214,886	$62,929	12/31/2023
MKTX	214,886	$62,929	12/31/2023
Dimensional Fund Advisors LP	202,234	$59,229	12/31/2023
MKTX	202,234	$59,229	12/31/2023
Tandem Investment Advisors Inc.	195,676	$57,304	12/31/2023
MKTX	195,676	$57,304	12/31/2023
Sei Investments Co.	181,652	$53,196	12/31/2023
MKTX	181,652	$53,196	12/31/2023
Burgundy Asset Management Ltd.	176,144	$51,584	12/31/2023
MKTX	176,144	$51,584	12/31/2023
Nuveen Asset Management LLC	171,184	$50,131	12/31/2023
MKTX	171,184	$50,131	12/31/2023
Deutsche Bank AG	170,200	$49,843	12/31/2023
MKTX	170,200	$49,843	12/31/2023
Van Berkom & Associates Inc.	165,439	$48,449	12/31/2023
MKTX	165,439	$48,449	12/31/2023
Balyasny Asset Management LLC	159,580	$46,733	12/31/2023
MKTX	159,580	$46,733	12/31/2023
Wells Fargo & Company MN	156,334	$45,783	12/31/2023
MKTX	156,334	$45,783	12/31/2023
NFJ Investment Group LLC	153,347	$44,908	12/31/2023
MKTX	153,347	$44,908	12/31/2023
Raymond James & Associates	201,412	$44,160	03/31/2024
MKTX	201,412	$44,160	03/31/2024
Fiera Capital Corp	140,238	$41,069	12/31/2023
MKTX	140,238	$41,069	12/31/2023
Barclays PLC	139,884	$40,964	12/31/2023
MKTX	139,884	$40,964	12/31/2023
Bank of America Corp DE	138,375	$40,523	12/31/2023
MKTX	138,375	$40,523	12/31/2023

See All: Funds Holding MKTX
See Details: Top 10 Hedge Funds Holding MKTX
Also See: MKTX Insider Buying
Also See: MKTX Holdings Changes
Analysts Forecast: Marketaxess Holdings Price Target

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