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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 %
Vanguard Group
1
Vanguard Group
Pennsylvania
$974M -$10.7M -47,764 -1%
BlackRock
2
BlackRock
New York
$592M +$9.94M +44,490 +2%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$521M +$31.8M +142,230 +6%
T. Rowe Price Investment Management
4
T. Rowe Price Investment Management
Maryland
$521M +$2M +8,973 +0.4%
VanEck Associates
5
VanEck Associates
New York
$409M -$39.4M -176,319 -9%
State Street
6
State Street
Massachusetts
$342M +$15M +67,290 +5%
GAM
7
GuardCap Asset Management
United Kingdom
$335M -$5.5M -24,648 -2%
Primecap Management
8
Primecap Management
California
$299M -$4.96M -22,220 -2%
Geode Capital Management
9
Geode Capital Management
Massachusetts
$254M +$1.44M +6,448 +0.6%
Invesco
10
Invesco
Georgia
$191M -$11.4M -50,990 -6%
AQR Capital Management
11
AQR Capital Management
Connecticut
$167M +$139M +628,954 +486%
FPP
12
Findlay Park Partners
United Kingdom
$147M -$5.29M -23,700 -3%
Norges Bank
13
Norges Bank
Norway
$115M +$115M +513,089 New
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$114M +$9.08M +40,662 +9%
American Century Companies
15
American Century Companies
Missouri
$109M +$59.2M +264,855 +119%
Millennium Management
16
Millennium Management
New York
$96.5M -$41.7M -186,740 -30%
Morgan Stanley
17
Morgan Stanley
New York
$94.9M +$24.6M +110,258 +35%
NRCM
18
North Reef Capital Management
California
$93.8M +$13.4M +60,000 +17%
JPMorgan Chase & Co
19
JPMorgan Chase & Co
New York
$93.6M -$5.86M -26,245 -6%
BAM
20
Burgundy Asset Management
Ontario, Canada
$92.5M +$2.65M +11,859 +3%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$84M -$2.91M -13,025 -3%
Charles Schwab
22
Charles Schwab
California
$81.8M -$1.34M -6,001 -2%
Citadel Advisors
23
Citadel Advisors
Florida
$78.4M -$27.5M -123,179 -26%
Northern Trust
24
Northern Trust
Illinois
$68.2M +$275K +1,230 +0.4%
CAM
25
Congress Asset Management
Massachusetts
$63.9M -$12.4M -55,462 -16%
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