MKTX icon

MarketAxess Holdings

523 hedge funds and large institutions have $8.24B invested in MarketAxess Holdings in 2025 Q2 according to their latest regulatory filings, with 84 funds opening new positions, 226 increasing their positions, 159 reducing their positions, and 58 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
523
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$65.9M
Puts
$8.94M
Net Calls
Net Calls Change

Top Sellers

1 -$146M
2 -$137M
3 -$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
Change in
Stake
GIA
301
Gateway Investment Advisers
Ohio
$458K
AssetMark Inc
302
AssetMark Inc
California
$453K
RWB
303
RMR Wealth Builders
New Jersey
$452K
Asset Management One
304
Asset Management One
Japan
$452K
LSERS
305
Louisiana State Employees Retirement System
Louisiana
$447K
Pathstone Holdings
306
Pathstone Holdings
New Jersey
$445K
GI
307
GAMMA Investing
California
$443K
KIA
308
Knollwood Investment Advisory
Maryland
$442K
BC
309
Bayforest Capital
United Kingdom
$440K
HighTower Advisors
310
HighTower Advisors
Illinois
$437K
TCM
311
Teza Capital Management
Illinois
$437K
AMI
312
Amica Mutual Insurance
Rhode Island
$436K
SAM
313
Securian Asset Management
Minnesota
$432K
OF
314
Optimize Financial
California
$424K
XT
315
XTX Topco
Cayman Islands
$419K
XSC
316
X-Square Capital
Puerto Rico
$419K
HKAM
317
Horizon Kinetics Asset Management
New York
$419K
AC
318
AXQ Capital
New Jersey
$408K
SCP
319
Sivia Capital Partners
California
$406K
IG
320
ING Group
Netherlands
$405K
GC
321
Guggenheim Capital
Illinois
$405K
NMERB
322
New Mexico Educational Retirement Board
New Mexico
$391K
MML Investors Services
323
MML Investors Services
Massachusetts
$388K
RS
324
R Squared
Hong Kong
$388K
HWM
325
HB Wealth Management
Georgia
$388K