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MarketAxess Holdings
MKTX

Overview Fund Activity

516 hedge funds and large institutions have $8.21B invested in MarketAxess Holdings in 2025 Q2 according to their latest regulatory filings, with 85 funds opening new positions, 226 increasing their positions, 153 reducing their positions, and 57 closing their positions.

Holders
516
Holders Change
+13
Holders Change %
+2.58%
% of All Funds
6.93%
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
226
Reduced
153
Closed
57
Calls
$56.5M
Puts
$3.67M
Net Calls
+$52.8M
Net Calls Change
+$31.3M

Top Buyers

1
AQR Capital Management
1
AQR Capital Management
Connecticut
$167M
2
Norges Bank
2
Norges Bank
Norway
$115M
3
American Century Companies
3
American Century Companies
Missouri
$109M
4
Arrowstreet Capital
4
Arrowstreet Capital
Massachusetts
$55.8M
5
Royal Bank of Canada
5
Royal Bank of Canada
Ontario, Canada
$43.9M

Top Sellers

1
WA
1
Wasatch Advisors
Utah
$8.16M
2
Macquarie Group
2
Macquarie Group
Australia
$288K
3
Marshall Wace
3
Marshall Wace
United Kingdom
$0
4
Millennium Management
4
Millennium Management
New York
$96.5M
5
VanEck Associates
5
VanEck Associates
New York
$409M
Name Market Value Shares Shares
Change 		Shares
Change %
State Board of Administration of Florida Retirement System
101
State Board of Administration of Florida Retirement System
Florida
$8.24M 36,876 +2,024 +6%
WA
102
Wasatch Advisors
Utah
$8.16M 36,532 -651,516 -95%
California State Teachers Retirement System (CalSTRS)
103
California State Teachers Retirement System (CalSTRS)
California
$8.03M 35,971 – –
FCBT
104
First Citizens Bank & Trust
North Carolina
$7.97M 35,700 +11,029 +45%
Adage Capital Partners
105
Adage Capital Partners
Massachusetts
$7.67M 34,350 +9,900 +40%
TC
106
TwinBeech Capital
New York
$7.64M 34,216 +34,216 New
Envestnet Portfolio Solutions
107
Envestnet Portfolio Solutions
Illinois
$7.6M 34,020 +10,594 +45%
National Bank of Canada
108
National Bank of Canada
Quebec, Canada
$7.53M 33,702 +4,010 +14%
IIM
109
INTECH Investment Management
Florida
$7.49M 33,543 +26,465 +374%
Bank of Montreal
110
Bank of Montreal
Ontario, Canada
$7.38M 33,050 -123,265 -79%
SSA
111
Schonfeld Strategic Advisors
New York
$7.34M 32,867 -13,805 -30%
ACM
112
Aquatic Capital Management
Illinois
$7.25M 32,447 +6,483 +25%
IP
113
Interval Partners
New York
$7.17M 32,114 +10,838 +51%
MF
114
Magnetar Financial
Illinois
$7.12M 31,881 +23,674 +288%
SG Americas Securities
115
SG Americas Securities
New York
$7.1M 31,787 +23,577 +287%
CWM
116
Congress Wealth Management
Massachusetts
$7.01M 31,389 -6,907 -18%
PCM
117
Prana Capital Management
Connecticut
$6.88M 30,815 -13,596 -31%
Teacher Retirement System of Texas
118
Teacher Retirement System of Texas
Texas
$6.6M 29,558 +314 +1%
New York State Teachers Retirement System (NYSTRS)
119
New York State Teachers Retirement System (NYSTRS)
New York
$6.59M 29,493 -3 -0%
HFS
120
Hantz Financial Services
Michigan
$6.53M 29,239 -3,767 -11%
Manulife (Manufacturers Life Insurance)
121
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$6.45M 28,897 -803 -3%
Cerity Partners
122
Cerity Partners
New York
$6.26M 28,041 +19,211 +218%
GC
123
Guardian Capital
Ontario, Canada
$5.87M 26,300 – –
Stifel Financial
124
Stifel Financial
Missouri
$5.7M 25,523 +18,164 +247%
Toronto Dominion Bank
125
Toronto Dominion Bank
Ontario, Canada
$5.69M 25,465 +5,508 +28%
3 4
5
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