ATMUS FILTRATION TECHNOLOGIE

$ATMU
← All companies Sign in to track
Smart money positioned

11 of the Top-200 alpha managers hold $ATMU as of the latest 13F snapshot.

13F holders
343
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

11 holders · Q1 2026

$ATMU is held by 11 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 2.69%, with an average of 0.26% of portfolio. Largest holder: Medina Value Partners, LLC at 2.69%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Medina Value Partners, LLC
2.69% NEW
α +36.9pts
02
Oxford Asset Management LLP
0.10% held
α +10.3pts
03
Voloridge Investment Management, LLC
0.04% held
α +15.5pts
04
Wellington Management Group LLP
0.01% held
α +10.5pts
05
WINTON GROUP Ltd
0.01% held
α +27.0pts

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 343 · Source: 13F-HR
01
Banyan Capital Management, Inc.
0.01% of portfolio
6,249,060 sh
02
Independent Investors Inc.
0.09% of portfolio
2,202,816 sh
03
Janus Henderson Group PLC
0.09% of portfolio
2,089,956 sh
04
State Street
—
1,901,704 sh
05
Axa S.a.
—
1,895,114 sh
06
Nuveen
0.06% of portfolio
1,712,628 sh
07
Commerce Bank
0.06% of portfolio
1,620,752 sh
08
Roberts Capital Advisors, LLC
0.06% of portfolio
1,580,676 sh
09
Thomas H Lee Partners LP
0.05% of portfolio
1,551,117 sh
10
Loomis Sayles & Co. L P
0.01% of portfolio
1,499,924 sh
See all 343 13F holders · Pro →

Insider activity · last 90 days

4 transactions · 1 filers
13 Nov 2025
Donoso Diego —
▼ SOLD
20
$48.84
S
05 Sep 2025
Donoso Diego —
▲ BOUGHT
15
$45.81
P
13 Aug 2025
Donoso Diego —
▲ BOUGHT
25
$45.00
P
02 Apr 2025
Donoso Diego —
▼ SOLD
40
$37.79
S

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 $ATMU in the recent window.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 10:22 UTC.