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Of the 11 tracked institutions holding ATMU, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +5.9pt. It's a gauge of who owns the name, not just how many.
Among the 11 tracked institutional investors we monitor, ATMU (ATMUS FILTRATION TECHNOLOGIE) is held with a combined value of $1.54B across 27,880,761 shares. The largest holder is VANGUARD GROUP INC with a position worth $407.09M. 5 funds increased their holdings. 6 funds reduced their position.
Total Institutional Value
$1.54B
Total Shares Held
27,880,761
Institutional Holders
11
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $407.09M | 0.01% | -1.7% |
| 2 | BlackRock, Inc. | $386.65M | 0.01% | +0.6% |
| 3 | FMR LLC | $280.32M | 0.01% | +11.7% |
| 4 | PRICE T ROWE ASSOCIATES INC /MD/ | $254.71M | 0.03% | -4.1% |
| 5 | STATE STREET CORP | $107.59M | 0.00% | -0.3% |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | $78.71M | 0.01% | -13.5% |
| 7 | CITADEL ADVISORS LLC | $13.08M | 0.01% | +16.8% |
| 8 | MILLENNIUM MANAGEMENT LLC | $6.74M | 0.00% | +0.7% |
| 9 | AQR CAPITAL MANAGEMENT LLC | $6.25M | 0.00% | +20.3% |
| 10 | Magnetar Financial LLC | $2.48M | 0.03% | -3.1% |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of ATMU with a position worth $407.09M, representing 0.01% of their portfolio. In total, 11 institutional investors hold ATMU with a combined value of $1.54B.
Institutional investors hold $1.54B worth of ATMU stock across 11 positions. The largest institutional holder is VANGUARD GROUP INC with $407.09M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ATMU, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ATMU positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$53.56
2026-07-24
YTD
+2.2%
57% of 52-week range
