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MarketAxess Holdings
MKTX

485 hedge funds and large institutions have $6.62B invested in MarketAxess Holdings in 2025 Q4 according to their latest regulatory filings, with 117 funds opening new positions, 156 increasing their positions, 170 reducing their positions, and 70 closing their positions.

New
Increased
Maintained
Reduced
Closed

67% more first-time investments, than exits

New positions opened: 117 | Existing positions closed: 70

65% more call options, than puts

Call options by funds: $33.7M | Put options by funds: $20.4M

50% more funds holding in top 10

Funds holding in top 10: 2 → 3 (+1)

8% more funds holding

Funds holding: 450 → 485 (+35)

7% more capital invested

Capital invested by funds: $6.21B → $6.62B (+$404M)

2.96% more ownership

Funds ownership: 95.28% → 98.24% (+3%)

8% less repeat investments, than reductions

Existing positions increased: 156 | Existing positions reduced: 170

Holders
485
Holders Change
+35
Holders Change %
+7.78%
% of All Funds
5.9%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.04%
New
117
Increased
156
Reduced
170
Closed
70
Calls
$33.7M
Puts
$20.4M
Net Calls
+$13.3M
Net Calls Change
-$156M

Top Buyers

1
BlackRock
BlackRock
New York
+$324M
2
AQR Capital Management
AQR Capital Management
Connecticut
+$274M
3
Primecap Management
Primecap Management
California
+$161M
4
Bank of Montreal
Bank of Montreal
Ontario, Canada
+$159M
5
NRCM
North Reef Capital Management
California
+$119M

Top Sellers

1
HSBC Holdings
HSBC Holdings
United Kingdom
-$306M
2
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
-$214M
3
VanEck Associates
VanEck Associates
New York
-$125M
4
Millennium Management
Millennium Management
New York
-$52.2M
5
GAM
GuardCap Asset Management
United Kingdom
-$35.4M
Name Holding Trade Value Shares
Change 		Change in
Stake
WA
251
Waverly Advisors
Alabama
$526K +$495K +2,900 New
Aviva
252
Aviva
United Kingdom
$522K +$46.2K +271 +10%
QCM
253
Qsemble Capital Management
New York
$518K -$864K -5,061 -64%
HSBC Holdings
254
HSBC Holdings
United Kingdom
$517K -$306M -1,795,922 -100%
LIP
255
Lighthouse Investment Partners
Florida
$514K +$484K +2,835 New
EWA
256
EverSource Wealth Advisors
Alabama
$512K +$373K +2,183 +340%
AC
257
AXQ Capital
New Jersey
$510K +$41.3K +242 +9%
WA
258
Waddell & Associates
Tennessee
$502K +$473K +2,772 New
NIA
259
NIA Impact Advisors
California
$483K -$132K -775 -23%
RIL
260
Rothschild Investment LLC
Illinois
$475K +$151K +886 +51%
DO
261
denkapparat Operations
Germany
$467K +$439K +2,574 New
HWM
262
HB Wealth Management
Georgia
$465K +$438K +2,564 New
WWC
263
Waypoint Wealth Counsel
Georgia
$460K +$433K +2,540 New
NA
264
NewEdge Advisors
Louisiana
$458K +$220K +1,288 +104%
TCA
265
Transcend Capital Advisors
New Jersey
$457K +$430K +2,519 New
Envestnet Asset Management
266
Envestnet Asset Management
Illinois
$444K -$3.56M -20,851 -89%
CFG
267
Citizens Financial Group
Rhode Island
$442K +$44.4K +260 +12%
RC
268
Rovin Capital
Arizona
$439K +$13.7K +80 +3%
AssetMark Inc
269
AssetMark Inc
California
$437K -$46.4K -272 -10%
CA
270
Clearstead Advisors
Ohio
$432K +$331K +1,940 +439%
DT
271
Diversified Trust
Tennessee
$431K +$406K +2,377 New
AMI
272
Amica Mutual Insurance
Rhode Island
$426K +$68.4K +401 +21%
EW
273
Evoke Wealth
California
$425K +$400K +2,346 New
RMCM
274
Reynders McVeigh Capital Management
Massachusetts
$415K -$85.3K -500 -18%
CIBC Asset Management
275
CIBC Asset Management
Ontario, Canada
$414K -$206K -1,210 -35%
9 10
11
12 13

MKTX Hedge Fund Activity: Q4 2025 in Review

485 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in MarketAxess Holdings (MKTX) for Q4 2025, worth a combined $6.62B — up 6.5% from $6.21B a quarter earlier.

Buyers outnumbered sellers: 117 funds opened new MKTX positions and 70 closed out — a net gain of 47 holders — while 156 added to existing stakes and 170 trimmed.

The largest buyer was BlackRock, adding an estimated $324M. The largest seller was HSBC Holdings, cutting an estimated $306M.

  • 485 institutional investors held MarketAxess Holdings (MKTX) as of Q4 2025, up from 450 in Q3 2025.
  • Funds reported $6.62B of MarketAxess Holdings stock for Q4 2025, up 6.5% quarter-over-quarter.
  • 117 funds opened new MarketAxess Holdings positions in Q4 2025 and 70 closed out, a net change of +47 holders.
  • The largest MarketAxess Holdings buyer in Q4 2025 was BlackRock, an estimated $324M added.
  • The largest MarketAxess Holdings seller in Q4 2025 was HSBC Holdings, an estimated $306M sold.

Based on aggregated 13F filings for Q4 2025.