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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
JG
126
Jain Global
New York
$2.49M -$1.09M -18,475 -30%
MF
127
Magnetar Financial
Illinois
$2.48M -$82.1K -1,390 -3%
FCM
128
Fieldview Capital Management
Michigan
$2.48M +$1.2M +20,290 +87%
RC
129
Renaissance Capital
Connecticut
$2.47M +$2.3M +38,890 New
Envestnet Asset Management
130
Envestnet Asset Management
Illinois
$2.45M +$422K +7,144 +20%
EGM
131
Engineers Gate Manager
New York
$2.44M -$529K -8,949 -17%
Lazard Asset Management
132
Lazard Asset Management
New York
$2.34M -$1.83M -30,938 -43%
Royal Bank of Canada
133
Royal Bank of Canada
Ontario, Canada
$2.32M -$894K -15,129 -27%
KOCAA
134
Knights of Columbus Asset Advisors
Connecticut
$2.32M +$928K +15,710 +62%
ACM
135
Aquatic Capital Management
Illinois
$2.32M +$942K +15,937 +64%
Zurich Cantonal Bank
136
Zurich Cantonal Bank
Switzerland
$2.26M +$2.35M +39,749 New
State of New Jersey Common Pension Fund D
137
State of New Jersey Common Pension Fund D
New Jersey
$2.23M -$429K -7,260 -16%
HSBC Holdings
138
HSBC Holdings
United Kingdom
$2.22M +$859K +14,531 +58%
Mirae Asset Global ETFs Holdings
139
Mirae Asset Global ETFs Holdings
Hong Kong
$2.19M -$12.1K -204 -0.5%
GF
140
Gabelli Funds
New York
$2.19M +$532K +9,000 +31%
Handelsbanken Fonder
141
Handelsbanken Fonder
Sweden
$2.17M +$378K +6,400 +20%
CIP
142
Convergence Investment Partners
Florida
$2.14M +$2.23M +37,691 New
TRSOTSOK
143
Teachers Retirement System of the State of Kentucky
Kentucky
$2.09M -$119K -2,015 -5%
TCM
144
Turas Capital Management
Massachusetts
$2.04M +$2.12M +35,900 New
VGA
145
Vanguard Global Advisers
Pennsylvania
$2.01M +$2.09M +35,320 New
PGCM
146
Prescott Group Capital Management
Oklahoma
$1.7M – – –
BCM
147
Bridgeway Capital Management
Texas
$1.7M +$1.77M +30,000 New
JCIA
148
Jackson Creek Investment Advisors
Colorado
$1.67M +$1.74M +29,444 New
IQI
149
Integrated Quantitative Investments
Washington
$1.66M +$1.16M +19,702 +206%
CI
150
Cambiar Investors
Colorado
$1.64M -$236K -4,000 -12%
4 5
6
7 8

ATMU Hedge Fund Activity: Q1 2026 in Review

351 of the 8,126 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.