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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 %
Vanguard Group
1
Vanguard Group
Pennsylvania
$974M 4,359,372 -47,764 -1%
BlackRock
2
BlackRock
New York
$592M 2,649,886 +44,490 +2%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$521M 2,332,146 +142,230 +6%
T. Rowe Price Investment Management
4
T. Rowe Price Investment Management
Maryland
$521M 2,331,988 +8,973 +0.4%
VanEck Associates
5
VanEck Associates
New York
$409M 1,829,597 -176,319 -9%
State Street
6
State Street
Massachusetts
$342M 1,532,696 +67,290 +5%
GAM
7
GuardCap Asset Management
United Kingdom
$335M 1,498,358 -24,648 -2%
Primecap Management
8
Primecap Management
California
$299M 1,339,292 -22,220 -2%
Geode Capital Management
9
Geode Capital Management
Massachusetts
$254M 1,141,198 +6,448 +0.6%
Invesco
10
Invesco
Georgia
$191M 853,213 -50,990 -6%
AQR Capital Management
11
AQR Capital Management
Connecticut
$167M 758,462 +628,954 +486%
FPP
12
Findlay Park Partners
United Kingdom
$147M 656,300 -23,700 -3%
Norges Bank
13
Norges Bank
Norway
$115M 513,089 +513,089 New
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$114M 511,422 +40,662 +9%
American Century Companies
15
American Century Companies
Missouri
$109M 487,197 +264,855 +119%
Millennium Management
16
Millennium Management
New York
$96.5M 432,182 -186,740 -30%
Morgan Stanley
17
Morgan Stanley
New York
$94.9M 424,807 +110,258 +35%
NRCM
18
North Reef Capital Management
California
$93.8M 420,000 +60,000 +17%
JPMorgan Chase & Co
19
JPMorgan Chase & Co
New York
$93.6M 419,044 -26,245 -6%
BAM
20
Burgundy Asset Management
Ontario, Canada
$92.5M 414,370 +11,859 +3%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$84M 376,029 -13,025 -3%
Charles Schwab
22
Charles Schwab
California
$81.8M 366,467 -6,001 -2%
Citadel Advisors
23
Citadel Advisors
Florida
$78.4M 351,166 -123,179 -26%
Northern Trust
24
Northern Trust
Illinois
$68.2M 305,564 +1,230 +0.4%
CAM
25
Congress Asset Management
Massachusetts
$63.9M 286,276 -55,462 -16%
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