FRONTIER CAPITAL MANAGEMENT CO LLC
Position in ATMU — Atmus Filtration Technologies Inc.
CIK 351173
Boston, MA
Position in ATMU
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$59,042,850
+$16,906,964 QoQ
Shares Held
1,157,930
+56.0% QoQ
Ownership
1.42%
of shares outstanding
% of Portfolio
0.55%
of 13F equity value
Holder Rank
#20
of 333 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority
Sole 48%
Shared 0%
None 52%
Common Shares in ATMU Over Time
Shares Held
Position Value (USD)
Position in Auto Parts
Consumer Cyclical · as of Jun 30, 2026FRONTIER CAPITAL MANAGEMENT CO LLC holds $217,099,105 across 6 Auto Parts names. ATMU ranks #2 (27.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MOD |
Modine Manufacturing Co
|
343,868 | $91,819,633 | |
| 2 | ATMU |
Atmus Filtration Technologies Inc.
This page
|
1,157,930 | $59,042,850 | |
| 3 | GTX |
Garrett Motion Inc.
|
1,466,821 | $53,142,924 | |
| 4 | THRM |
Gentherm Inc
|
254,713 | $8,688,260 | |
| 5 | AUR |
Aurora Innovation, Inc.
|
606,109 | $4,133,663 | |
| 6 | BWA |
Borgwarner Inc
|
4,093 | $271,775 |
All Filings in ATMU
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8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $59,042,850 | 1,157,930 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $42,135,886 | 742,221 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $33,925,988 | 653,554 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $16,621,346 | 368,626 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $12,357,415 | 339,303 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $9,247,512 | 251,770 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $13,811,968 | 352,526 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $7,805,601 | 207,983 | Shares | Sole | 2024-11-14 | |
| No filing history on record for this holder in this stock. | ||||||