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MarketAxess Holdings
MKTX

Overview Fund Activity

503 hedge funds and large institutions have $7.94B invested in MarketAxess Holdings in 2025 Q1 according to their latest regulatory filings, with 81 funds opening new positions, 200 increasing their positions, 173 reducing their positions, and 81 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
503
Holders Change
-9
Holders Change %
-1.76%
% of All Funds
6.83%
Holding in Top 10
4
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+100%
% of All Funds
0.05%
New
81
Increased
200
Reduced
173
Closed
81
Calls
$40.6M
Puts
$19.1M
Net Calls
+$21.5M
Net Calls Change
+$24.8M

Top Buyers

1
Millennium Management
Millennium Management
New York
+$103M
2
Citadel Advisors
Citadel Advisors
Florida
+$80.9M
3
Holocene Advisors
Holocene Advisors
New York
+$54.2M
4
American Century Companies
American Century Companies
Missouri
+$43.7M
5
BAM
Burgundy Asset Management
Ontario, Canada
+$34.2M

Top Sellers

1
BlackRock
BlackRock
New York
-$121M
2
Artisan Partners
Artisan Partners
Wisconsin
-$55.7M
3
GAM
GuardCap Asset Management
United Kingdom
-$52M
4
JPMorgan Chase & Co
JPMorgan Chase & Co
New York
-$40.1M
5
State Street
State Street
Massachusetts
-$35.5M
Name Holding Trade Value Shares
Change 		Shares
Change %
SFG
501
Stonebridge Financial Group
Pennsylvania
$216 +$216 +1 New
AF
502
Advisornet Financial
Minnesota
$216 +$216 +1 New
BHWM
503
Bay Harbor Wealth Management
Maryland
$216 +$216 +1 New
YDMI
504
Y.D. More Investments
Israel
$31 +$3 +6 +13%
Norges Bank
505
Norges Bank
Norway
– -$119M -526,874 Closed
Artisan Partners
506
Artisan Partners
Wisconsin
– -$55.7M -246,297 Closed
SIMG
507
Stephens Investment Management Group
Texas
– -$29.1M -128,937 Closed
Mitsubishi UFJ Trust & Banking
508
Mitsubishi UFJ Trust & Banking
Japan
– -$15M -66,569 Closed
2
509
2Xideas
Switzerland
– -$11.1M -48,974 Closed
ACL
510
Azora Capital LP
Florida
– -$9.89M -43,756 Closed
CCIA
511
Campbell & Co Investment Adviser
Maryland
– -$7.01M -31,007 Closed
Hudson Bay Capital Management
512
Hudson Bay Capital Management
Connecticut
– -$6.76M -29,897 Closed
AAF
513
Andra AP-fonden
Sweden
– -$5.92M -26,200 Closed
MSV
514
MN Services Vermogensbeheer
Netherlands
– -$3.3M -14,600 Closed
Axa
515
Axa
France
– -$3.28M -14,514 Closed
QT
516
Quantbot Technologies
New York
– -$3.21M -14,199 Closed
CF
517
Covea Finance
France
– -$3.1M -13,700 Closed
TC
518
Taika Capital
Florida
– -$2.69M -11,894 Closed
CP
519
Cumberland Partners
Ontario, Canada
– -$2.49M -11,000 Closed
CM
520
Crestline Management
Texas
– -$2M -8,851 Closed
FAF
521
Första AP-fonden
Sweden
– -$1.76M -7,800 Closed
CC
522
Centiva Capital
New York
– -$1.71M -7,569 Closed
PP
523
Prudential plc
United Kingdom
– -$1.71M -7,567 Closed
HIP
524
HUB Investment Partners
Texas
– -$1.7M -7,503 Closed
BCIM
525
British Columbia Investment Management
British Columbia, Canada
– -$1.63M -7,233 Closed
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