MKTX icon

MarketAxess Holdings

477 hedge funds and large institutions have $6.61B invested in MarketAxess Holdings in 2025 Q4 according to their latest regulatory filings, with 114 funds opening new positions, 152 increasing their positions, 170 reducing their positions, and 69 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

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

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding in top 10

Funds holding in top 10:

more funds holding

Funds holding:

6% more capital invested

Capital invested by funds: $6.21B → $6.61B (+$398M)

2.88% more ownership

Funds ownership: 95.28%98.16% (+2.9%)

11% less repeat investments, than reductions

Existing positions increased: 152 | Existing positions reduced: 170

Holders
477
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
$33.7M
Puts
$20.4M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Baillie Gifford & Co
76
Baillie Gifford & Co
United Kingdom
$7.09M
TI
77
Trexquant Investment
Connecticut
$6.99M
WG
78
Winton Group
United Kingdom
$6.59M
Teacher Retirement System of Texas
79
Teacher Retirement System of Texas
Texas
$6.55M
D.E. Shaw & Co
80
D.E. Shaw & Co
New York
$6.54M
State Board of Administration of Florida Retirement System
81
State Board of Administration of Florida Retirement System
Florida
$6.53M
New York State Teachers Retirement System (NYSTRS)
82
New York State Teachers Retirement System (NYSTRS)
New York
$6.43M
California State Teachers Retirement System (CalSTRS)
83
California State Teachers Retirement System (CalSTRS)
California
$6.38M
BG
84
Bahl & Gaynor
Ohio
$6.35M
Canada Life
85
Canada Life
Manitoba, Canada
$6.35M
Prudential Financial
86
Prudential Financial
New Jersey
$6.23M
T. Rowe Price Associates
87
T. Rowe Price Associates
Maryland
$6.16M
Susquehanna International Group
88
Susquehanna International Group
Pennsylvania
$6.07M
State of Wisconsin Investment Board
89
State of Wisconsin Investment Board
Wisconsin
$6.05M
Stifel Financial
90
Stifel Financial
Missouri
$6.02M
Balyasny Asset Management
91
Balyasny Asset Management
Illinois
$5.93M
PMAM
92
Picton Mahoney Asset Management
Ontario, Canada
$5.87M
Thrivent Financial for Lutherans
93
Thrivent Financial for Lutherans
Minnesota
$5.78M
Citigroup
94
Citigroup
New York
$5.69M
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
95
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$5.56M
GKIM
96
GW&K Investment Management
Massachusetts
$5.54M
VDBMI
97
Van Den Berg Management I
Texas
$5.51M
Royal Bank of Canada
98
Royal Bank of Canada
Ontario, Canada
$5.49M
Mercer Global Advisors
99
Mercer Global Advisors
Colorado
$5.36M
Man Group
100
Man Group
United Kingdom
$5.32M