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MarketAxess Holdings
MKTX

Overview Fund Activity

522 hedge funds and large institutions have $8.24B invested in MarketAxess Holdings in 2025 Q2 according to their latest regulatory filings, with 85 funds opening new positions, 227 increasing their positions, 157 reducing their positions, and 57 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
522
Holders Change
+19
Holders Change %
+3.78%
% of All Funds
7%
Holding in Top 10
3
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-25%
% of All Funds
0.04%
New
85
Increased
227
Reduced
157
Closed
57
Calls
$65.9M
Puts
$8.94M
Net Calls
+$56.9M
Net Calls Change
+$35.4M

Top Buyers

1
AQR Capital Management
AQR Capital Management
Connecticut
+$139M
2
American Century Companies
American Century Companies
Missouri
+$59.2M
3
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$36M
4
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$35M
5
Fidelity Investments
Fidelity Investments
Massachusetts
+$31.8M

Top Sellers

1
WA
Wasatch Advisors
Utah
-$146M
2
Macquarie Group
Macquarie Group
Australia
-$137M
3
Marshall Wace
Marshall Wace
United Kingdom
-$77.5M
4
Millennium Management
Millennium Management
New York
-$41.7M
5
VanEck Associates
VanEck Associates
New York
-$39.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
Connor, Clark & Lunn Investment Management (CC&L)
51
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$26.4M +$3.8M +17,013 +17%
RC
52
RDST Capital
Washington
$24.3M +$16.7M +74,780 +218%
Bank of Nova Scotia
53
Bank of Nova Scotia
Ontario, Canada
$24.2M +$20.4M +91,419 +536%
Prudential Financial
54
Prudential Financial
New Jersey
$21.9M +$17.5M +78,336 +393%
Jane Street
55
Jane Street
New York
$21.6M +$504K +2,256 +2%
Tudor Investment Corp
56
Tudor Investment Corp
Connecticut
$20.8M +$20.8M +93,154 New
Man Group
57
Man Group
United Kingdom
$20.3M +$10.2M +45,870 +102%
Qube Research & Technologies (QRT)
58
Qube Research & Technologies (QRT)
United Kingdom
$20.1M +$14.6M +65,281 +266%
BNP Paribas Financial Markets
59
BNP Paribas Financial Markets
France
$19.1M +$916K +4,103 +5%
WHG
60
Westwood Holdings Group
Texas
$18.6M -$924K -4,139 -5%
Schroder Investment Management Group
61
Schroder Investment Management Group
United Kingdom
$18.5M -$6.45M -28,899 -26%
Canada Pension Plan Investment Board
62
Canada Pension Plan Investment Board
Ontario, Canada
$18.2M +$6.61M +29,600 +57%
RhumbLine Advisers
63
RhumbLine Advisers
Massachusetts
$17.2M +$570K +2,550 +3%
Legal & General Group
64
Legal & General Group
United Kingdom
$17.2M +$2.11M +9,468 +14%
Holocene Advisors
65
Holocene Advisors
New York
$17.1M -$38.9M -174,068 -69%
Robeco Institutional Asset Management
66
Robeco Institutional Asset Management
Netherlands
$16.8M +$3.5M +15,685 +26%
GF
67
Goodman Financial
Texas
$16.4M +$136K +610 +0.8%
Swiss National Bank
68
Swiss National Bank
Switzerland
$16.1M -$246K -1,100 -2%
Voloridge Investment Management
69
Voloridge Investment Management
Florida
$15.4M +$11.1M +49,542 +254%
SEI Investments
70
SEI Investments
Pennsylvania
$14.1M -$14.4M -64,456 -50%
Public Employees Retirement Association of Colorado
71
Public Employees Retirement Association of Colorado
Colorado
$14.1M -$15K -67 -0.1%
Envestnet Asset Management
72
Envestnet Asset Management
Illinois
$13.8M +$791K +3,541 +6%
IC
73
IEQ Capital
California
$13.8M +$11.2M +49,978 +429%
Verition Fund Management
74
Verition Fund Management
Connecticut
$13.7M +$10.7M +47,762 +349%
WAM
75
Wilson Asset Management
Australia
$13.5M – – –
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