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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 %
NPF
101
Norris Perne & French
Michigan
$8.25M +$43.6K +195 +0.5%
State Board of Administration of Florida Retirement System
102
State Board of Administration of Florida Retirement System
Florida
$8.24M +$452K +2,024 +6%
WA
103
Wasatch Advisors
Utah
$8.16M -$146M -651,516 -95%
California State Teachers Retirement System (CalSTRS)
104
California State Teachers Retirement System (CalSTRS)
California
$8.03M – – –
FCBT
105
First Citizens Bank & Trust
North Carolina
$7.97M +$2.46M +11,029 +45%
Adage Capital Partners
106
Adage Capital Partners
Massachusetts
$7.67M +$2.21M +9,900 +40%
TC
107
TwinBeech Capital
New York
$7.64M +$7.64M +34,216 New
Envestnet Portfolio Solutions
108
Envestnet Portfolio Solutions
Illinois
$7.6M +$2.37M +10,594 +45%
National Bank of Canada
109
National Bank of Canada
Quebec, Canada
$7.53M +$896K +4,010 +14%
IIM
110
INTECH Investment Management
Florida
$7.49M +$5.91M +26,465 +374%
Bank of Montreal
111
Bank of Montreal
Ontario, Canada
$7.38M -$27.5M -123,265 -79%
SSA
112
Schonfeld Strategic Advisors
New York
$7.34M -$3.08M -13,805 -30%
ACM
113
Aquatic Capital Management
Illinois
$7.25M +$1.45M +6,483 +25%
IP
114
Interval Partners
New York
$7.17M +$2.42M +10,838 +51%
MF
115
Magnetar Financial
Illinois
$7.12M +$5.29M +23,674 +288%
SG Americas Securities
116
SG Americas Securities
New York
$7.1M +$5.27M +23,577 +287%
CWM
117
Congress Wealth Management
Massachusetts
$7.01M -$1.54M -6,907 -18%
PCM
118
Prana Capital Management
Connecticut
$6.88M -$3.04M -13,596 -31%
Susquehanna International Group
119
Susquehanna International Group
Pennsylvania
$6.73M +$2.79M +12,488 +71%
Teacher Retirement System of Texas
120
Teacher Retirement System of Texas
Texas
$6.6M +$70.1K +314 +1%
New York State Teachers Retirement System (NYSTRS)
121
New York State Teachers Retirement System (NYSTRS)
New York
$6.59M -$670 -3 -0%
HFS
122
Hantz Financial Services
Michigan
$6.53M -$841K -3,767 -11%
Manulife (Manufacturers Life Insurance)
123
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$6.45M -$179K -803 -3%
Cerity Partners
124
Cerity Partners
New York
$6.26M +$4.29M +19,211 +218%
GC
125
Guardian Capital
Ontario, Canada
$5.87M – – –
3 4
5
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