MARKETAXESS HLDGS INC

$MKTX
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Smart money positioned

8 of the Top-200 alpha managers hold $MKTX as of the latest 13F snapshot.

13F holders
446
Insider buys · 90d
0
Congress · 90d
2trades

Smart Money · top-200 alpha cohort

8 holders · Q1 2026

$MKTX is held by 8 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.11%, with an average of 0.03% of portfolio. Largest holder: WINTON GROUP Ltd at 0.11%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
WINTON GROUP Ltd
0.11% NEW
α +27.0pts
02
Connor, Clark & Lunn Investment Management Ltd.
0.07% held
α +12.3pts
03
New Age Alpha Advisors, LLC
0.03% held
α +10.8pts
04
Quarry LP
0.01% held
α +10.6pts
05
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.00% held
α +27.5pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 446 · Source: 13F-HR
01
First Financial Bankshares Inc.
0.43% of portfolio
3,347,125 sh
02
Primecap Management CO
0.44% of portfolio
3,175,425 sh
03
Nbc Securities, Inc.
0.15% of portfolio
2,283,336 sh
04
Siemens Fonds Invest GmbH
10.65% of portfolio
1,875,000 sh
05
Northwest Capital Management Inc
6.21% of portfolio
1,286,740 sh
06
Axa S.a.
0.01% of portfolio
1,280,857 sh
07
State Street
0.01% of portfolio
1,248,314 sh
08
IMS Capital Management
1.14% of portfolio
961,200 sh
09
Orrstown Financial Services Inc.
0.01% of portfolio
909,074 sh
10
Southern Style Financial, Inc.
4.84% of portfolio
590,534 sh
See all 446 13F holders · Pro →

Insider activity · last 90 days

No insider activity

No Form 4 filings on record for $MKTX in the recent window.

Congress trades · last 90 days

4 disclosures · STOCK Act
Josh Gottheimer
House · New Jersey · Traded Apr 9
SOLD
$MKTXMarketAxess Holdings Inc
$1K–$15K
May 20STOCK
Steve Cohen
House · Tennessee · Traded Apr 9
SOLD
$MKTXMarketAxess Holdings, Inc. -
$1K–$15K
May 5STOCK
Julie Johnson
House · Texas · Traded Feb 12
SOLD
$MKTXMarketAxess Holdings Inc
$1K–$15K
Mar 12STOCK
Julie Johnson
House · Texas · Traded Jan 15
BOUGHT
$MKTXMarketAxess Holdings Inc
$1K–$15K
Feb 12STOCK

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 07:25 UTC.