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Atmus Filtration Technologies
ATMU

351 hedge funds and large institutions have $4.75B invested in Atmus Filtration Technologies in 2026 Q1 according to their latest regulatory filings, with 73 funds opening new positions, 125 increasing their positions, 103 reducing their positions, and 27 closing their positions.

New
Increased
Maintained
Reduced
Closed

428% more call options, than puts

Call options by funds: $1.8M | Put options by funds: $341K

170% more first-time investments, than exits

New positions opened: 73 | Existing positions closed: 27

21% more repeat investments, than reductions

Existing positions increased: 125 | Existing positions reduced: 103

13% more funds holding

Funds holding: 311 → 351 (+40)

10% more capital invested

Capital invested by funds: $4.34B → $4.75B (+$412M)

0.11% more ownership

Funds ownership: 102.49% → 102.6% (+0.11%)

29% less funds holding in top 10

Funds holding in top 10: 7 → 5 (-2)

Holders
351
Holders Change
+40
Holders Change %
+12.86%
% of All Funds
4.32%
Holding in Top 10
5
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-28.57%
% of All Funds
0.06%
New
73
Increased
125
Reduced
103
Closed
27
Calls
$1.8M
Puts
$341K
Net Calls
+$1.46M
Net Calls Change
-$17.6M

Top Buyers

Rank Fund Capital Flow
1
Neuberger Berman Group
Neuberger Berman Group
New York
+$69.1M
2
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$39M
3
Invesco
Invesco
Georgia
+$36.4M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$30.6M
5
Jane Street
Jane Street
New York
+$24.6M

Top Sellers

Rank Fund Capital Flow
1
EC
Eminence Capital
New York
-$150M
2
Allspring Global Investments
Allspring Global Investments
North Carolina
-$28.6M
3
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
-$26.7M
4
PCM
Parsifal Capital Management
Connecticut
-$26.3M
5
Morgan Stanley
Morgan Stanley
New York
-$22.8M
Name Holding Trade Value Shares
Change 		Change in
Stake
TI
351
Trexquant Investment
Connecticut
– -$6.94M -133,698 Closed
NIM
352
NEOS Investment Management
Connecticut
– -$4.66M -89,857 Closed
Verition Fund Management
353
Verition Fund Management
Connecticut
– -$3.53M -67,992 Closed
ICM
354
Ionic Capital Management
New York
– -$3.11M -60,003 Closed
Norges Bank
355
Norges Bank
Norway
– -$2.76M -53,214 Closed
A
356
AlphaQuest
New York
– -$2.14M -41,291 Closed
TBC
357
Tweedy, Browne Co
Connecticut
– -$2.1M -40,550 Closed
SCM
358
Sandler Capital Management
New York
– -$1.52M -29,327 Closed
Two Sigma Advisers
359
Two Sigma Advisers
New York
– -$1.22M -23,492 Closed
ET
360
Entropy Technologies
New York
– -$959K -18,470 Closed
IA
361
IFG Advisory
Georgia
– -$763K -14,708 Closed
VCA
362
Verdence Capital Advisors
Maryland
– -$730K -14,061 Closed
IC
363
IEQ Capital
California
– -$287K -5,530 Closed
CAU
364
Caxton Associates (UK)
– -$282K -5,423 Closed
IWM
365
IHT Wealth Management
Illinois
– -$238K -4,580 Closed
Walleye Trading
366
Walleye Trading
New York
– -$197K -3,803 Closed
AB
367
Amalgamated Bank
New York
– -$136K -2,625 Closed
Group One Trading
368
Group One Trading
Illinois
– -$123K -2,378 Closed
KAS
369
Kestra Advisory Services
Texas
– -$94.6K -1,822 Closed
FHA
370
Flagship Harbor Advisors
Massachusetts
– -$12.7K -245 Closed
QCG
371
Quadrant Capital Group
Ohio
– -$12.5K -240 Closed
HCA
372
Harbor Capital Advisors
Illinois
– -$11K -208 Closed
QL
373
Quarry LP
New York
– -$8.15K -157 Closed
FNWA
374
Financial Network Wealth Advisors
Utah
– -$1.09K -21 Closed
BTI
375
Blue Trust Inc
Georgia
– -$467 -9 Closed
12 13 14
15
16

ATMU Hedge Fund Activity: Q1 2026 in Review

351 of the 8,127 institutional investors tracked by Wall St. Rank reported a position in Atmus Filtration Technologies (ATMU) for Q1 2026, worth a combined $4.75B — up 9.5% from $4.34B a quarter earlier.

Buyers outnumbered sellers: 73 funds opened new ATMU positions and 27 closed out — a net gain of 46 holders — while 125 added to existing stakes and 103 trimmed.

The largest buyer was Neuberger Berman Group, adding an estimated $69.1M. The largest seller was Eminence Capital, cutting an estimated $150M.

  • 351 institutional investors held Atmus Filtration Technologies (ATMU) as of Q1 2026, up from 311 in Q4 2025.
  • Funds reported $4.75B of Atmus Filtration Technologies stock for Q1 2026, up 9.5% quarter-over-quarter.
  • 73 funds opened new Atmus Filtration Technologies positions in Q1 2026 and 27 closed out, a net change of +46 holders.
  • The largest Atmus Filtration Technologies buyer in Q1 2026 was Neuberger Berman Group, an estimated $69.1M added.
  • The largest Atmus Filtration Technologies seller in Q1 2026 was Eminence Capital, an estimated $150M sold.

Based on aggregated 13F filings for Q1 2026.