MARKETAXESS HLDGS INC

$MKTX
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Smart money positioned

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

13F holders
12
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

12 holders · Q1 2026

$MKTX is held by 12 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.43%, with an average of 0.08% of portfolio. Largest holder: Commerzbank Aktiengesellschaft at 0.43%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Commerzbank Aktiengesellschaft
0.43% held
α +12.7pts
02
Shufro Rose & Co. LLC
0.15% held
α +32.3pts
03
WINTON GROUP Ltd
0.11% NEW
α +27.0pts
04
Hamel Associates, Inc.
0.07% held
α +12.3pts
05
Legend Financial Advisors, Inc.
0.03% held
α +12.3pts

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 12 · Source: 13F-HR
01
Vanguard Group Inc.
0.01% of portfolio
3,839,889 sh
02
State Street
0.01% of portfolio
1,280,857 sh
03
Two Sigma
0.07% of portfolio
524,024 sh
04
Renaissance Technologies
0.04% of portfolio
167,100 sh
05
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
—
107,110 sh
06
Citadel
0.01% of portfolio
82,159 sh
07
Citigroup Inc.
—
21,390 sh
08
WINTON GROUP Ltd
0.10% of portfolio
18,018 sh
09
Bridgewater Associates
—
5,608 sh
10
Knightsbridge Asset Management, LLC
0.04% of portfolio
1,981 sh
See all 12 13F holders · Pro →

Insider activity · last 90 days

50 transactions · 20 filers
10 Jul 2026
Unknown —
▼ SOLD
—
—
S
18 Jun 2026
Hernandez Carlos Mauricio —
· G
10,708
—
G
18 Jun 2026
Hernandez Carlos Mauricio —
· G
10,708
—
G
10 Jun 2026
Altobello Nancy A. —
· GRANT
1,390
—
A
10 Jun 2026
Cifu Douglas A —
· GRANT
1,390
—
A
10 Jun 2026
Pintoff Scott —
▼ SOLD
100
$116.03
S
10 Jun 2026
Chwick Jane —
· GRANT
1,390
—
A
10 Jun 2026
Portney Emily Hope —
· GRANT
1,390
—
A
10 Jun 2026
Hoornweg Roberto —
· GRANT
1,390
—
A
10 Jun 2026
Schiciano Kenneth T —
· GRANT
1,390
—
A
10 Jun 2026
Ketchum Richard G —
· GRANT
1,390
—
A
10 Jun 2026
Gibson Kourtney —
· GRANT
1,390
—
A

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $MKTX in the recent window.

Convergence · $MKTX

Pattern cards reflect public SEC EDGAR and Congressional filing data only. Detection uses filing dates; trade execution dates may differ. Past convergence patterns do not predict future returns. Nothing here is investment advice.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 13:37 UTC.