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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 %
CNAM
251
Campbell Newman Asset Management
Wisconsin
$790K +$52K +233 +7%
AA
252
Ancora Advisors
Ohio
$772K +$89.3K +400 +13%
CC
253
Centiva Capital
New York
$769K +$769K +3,445 New
NIA
254
NIA Impact Advisors
California
$768K – – –
Mackenzie Financial
255
Mackenzie Financial
Ontario, Canada
$768K +$483K +2,161 +169%
Creative Planning
256
Creative Planning
Kansas
$767K +$234K +1,048 +44%
IMRF
257
Illinois Municipal Retirement Fund
Illinois
$759K -$274K -1,225 -27%
X
258
Xponance
Pennsylvania
$745K +$4.47K +20 +0.6%
RMCM
259
Reynders McVeigh Capital Management
Massachusetts
$738K -$103K -462 -12%
Fifth Third Bancorp
260
Fifth Third Bancorp
Ohio
$729K +$28.4K +127 +4%
OPERF
261
Oregon Public Employees Retirement Fund
Oregon
$722K – – –
CWM
262
CIBC World Markets
New York
$705K +$72.6K +325 +11%
CAU
263
Caxton Associates (UK)
$703K +$703K +3,148 New
HT
264
Headlands Technologies
Illinois
$693K -$739K -3,311 -52%
Pacer Advisors
265
Pacer Advisors
Pennsylvania
$685K +$267K +1,197 +64%
SAM
266
Shell Asset Management
Netherlands
$683K -$26.8K -120 -4%
EI
267
Ethic Inc
New York
$682K +$447K +2,036 +191%
PNC Financial Services Group
268
PNC Financial Services Group
Pennsylvania
$678K -$1.12K -5 -0.2%
FAM
269
Formidable Asset Management
Ohio
$662K -$45.6K -204 -6%
FDCDDQ
270
Federation des caisses Desjardins du Quebec
Quebec, Canada
$658K -$40.6K -182 -6%
IA
271
Inspire Advisors
Idaho
$657K -$68.3K -306 -9%
LFG
272
Larson Financial Group
Missouri
$650K +$79.1K +354 +14%
TRSOTSOK
273
Teachers Retirement System of the State of Kentucky
Kentucky
$645K +$14.1K +63 +2%
Twin Tree Management
274
Twin Tree Management
Texas
$580K -$1.19M -5,332 -67%
MSU
275
Mizuho Securities USA
New York
$579K -$95.1K -426 -14%
9 10
11
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