MKTX icon

MarketAxess Holdings

443 hedge funds and large institutions have $6.21B invested in MarketAxess Holdings in 2025 Q3 according to their latest regulatory filings, with 61 funds opening new positions, 159 increasing their positions, 184 reducing their positions, and 134 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

less ownership

Funds ownership:

less repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less funds holding

Funds holding:

25% less capital invested

Capital invested by funds: $8.24B → $6.21B (-$2.03B)

33% less funds holding in top 10

Funds holding in top 10: 32 (-1)

54% less first-time investments, than exits

New positions opened: 61 | Existing positions closed: 134

Holders
443
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$192M
Puts
$22.6M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
TC
451
TwinBeech Capital
New York
National Bank of Canada
452
National Bank of Canada
Quebec, Canada
Caisse de Depot et Placement du Quebec (CDPQ)
453
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
Natixis Advisors
454
Natixis Advisors
Massachusetts
Chevy Chase Trust
455
Chevy Chase Trust
Maryland
AI
456
Atom Investors
Texas
AIMCA
457
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
JSP
458
Jackson Square Partners
California
LIP
459
Lighthouse Investment Partners
Florida
Rafferty Asset Management
460
Rafferty Asset Management
New York
CCM
461
Coldstream Capital Management
Washington
YIH
462
Y-Intercept (HK)
Hong Kong
SOMRS
463
State of Michigan Retirement System
Michigan
CNB
464
Czech National Bank
Czech Republic
OAM
465
Oppenheimer Asset Management
New York
ProShare Advisors
466
ProShare Advisors
Maryland
Retirement Systems of Alabama
467
Retirement Systems of Alabama
Alabama
UM
468
UniSuper Management
Australia
CA
469
Callahan Advisors
Texas
OBAM
470
ODDO BHF Asset Management
France
MCM
471
Moore Capital Management
New York
OTPPB
472
Ontario Teachers' Pension Plan Board
Ontario, Canada
Mirae Asset Global Investments
473
Mirae Asset Global Investments
South Korea
IWC
474
Integrated Wealth Concepts
Massachusetts
GCP
475
GSA Capital Partners
United Kingdom