WhaleCreep

Which hedge funds own ATMU? ATMUS FILTRATION TECHNOLOGIE, Q2 2026 13F holders

Consumer CyclicalAuto Parts

30 tracked hedge funds disclosed a position in ATMU (ATMUS FILTRATION TECHNOLOGIE) in their Q2 2026 13F filings, worth $288.8m in total. The largest holder by portfolio weight is Mangrove Partners IM, LLC at 4.1% of its book. 5 opened a new position this quarter: Twinbeech Capital LP, Entropy Technologies, LP, Verition Fund Management LLC, Freestone Grove Partners LP. 28 exited: Parsifal Capital Management, LP, Gallo Partners, LP, Dark Forest Capital Management LP.

30
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
5
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
28
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$8.4m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$152m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$289m
Combined value
Sum of the holders' reported positions in the security.
2.4%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

30 rows
Mangrove Partners IM, LLC Hedge fund4.1%$61.8m1.21m−7.9%reduced
Marathon Partners Equity Management, LLC Hedge fund3.9%$3.9m77,000+2.7%added
Medina Value Partners, LLC Hedge fund3.2%$16.3m318,986+41%added
Port Capital LLC Hedge fund2.2%$52.7m1.03m+14%added
Charter Oak Advisors LP Hedge fund0.8%$1.3m26,4640.0%held
Twinbeech Capital LP Hedge fund0.3%$1.7m33,379–new
Prescott Group Capital Management, L.L.C. Hedge fund0.1%$1.5m30,0000.0%held
Atom Investors LP Hedge fund0.1%$1.4m28,401+75%added
Woodline Partners LP Hedge fund0.10%$31.0m607,471+71%added
Okabena Investment Services Inc Hedge fund0.08%$445k8,719−16%reduced
HITE Hedge Asset Management LLC Hedge fund0.06%$1.2m22,963+25%added
Entropy Technologies, LP Hedge fund0.04%$969k18,999–new
Jain Global LLC Hedge fund0.04%$3.1m60,343+38%added
Axiom Investors LLC Hedge fund0.04%$4.1m80,165−61%reduced
Marshall Wace, LLP Hedge fund0.03%$41.1m806,251+150%added
Verition Fund Management LLC Hedge fund0.03%$3.8m74,880–new
Quantbot Technologies LP Hedge fund0.03%$677k13,272−83%reduced
Voleon Capital Management LP Hedge fund0.02%$1.2m23,223−62%reduced
Capital Fund Management S.A. Hedge fund0.02%$2.6m50,802−2.4%reduced
D. E. Shaw & Co., Inc. Hedge fund0.02%$24.6m482,029−70%reduced
CVA Family Office, LLC Family office0.01%$135k2,652−1.5%reduced
Freestone Grove Partners LP Hedge fund0.01%$1.7m32,464–new
Arrowstreet Capital, Limited Partnership Hedge fund0.01%$19.6m383,637−62%reduced
Armistice Capital, LLC Hedge fund0.01%$262k5,141–new
Engineers Gate Manager LP Hedge fund0.0%$281k5,505−87%reduced
Brevan Howard Capital Management LP Hedge fund0.0%$205k4,020−94%reduced
Citadel Advisors LLC Hedge fund0.0%$4.5m87,448−62%reduced
AQR Capital Management LLC Hedge fund0.0%$4.6m89,324−19%reduced
Squarepoint Ops LLC Hedge fund0.0%$701k13,754−82%reduced
Two Sigma Investments, LP Hedge fund0.0%$1.5m30,192−65%reduced