ATMUAtmus Filtration Technologies Inc.

$42.82-6.6% 1Y

Who owns ATMU

333 institutions reported holding ATMU for 2026Q2, together 105% of the company, fewer than the 348 a quarter earlier.

333

Institutions reporting a position · as of 2026Q2 · down from 348 the quarter before

Shares held by institutions
86.0M

Shares held by institutions · 105% of the company · long US equity positions only, as reported on Form 13F

Reported value
$4.39B

Reported value · at Jun 30, 2026 prices, not today's

Top 5 holders
43%

Top 5 holders · of the whole company, between five filers

Details›
Reporting quarter2026-06-30
2026Q2
Quarters on record
13
New positions
60
Positions exited
75
Added to
109
Reduced
99
Top 10 holdersof the company
59%
Shares sold shortsettled Sep 15, 2026
3.1M
Short interestof shares outstanding
3.8%
Days to coverat the average daily volume
5.1
Change in the short positionsince the Aug 31, 2026 count
−19%
Institutional ownership by quarter, 2023Q2 to 2026Q2
QuarterFilersSharesReported value
2026Q233386.0M$4.39B
2026Q134883.6M$4.75B
2025Q430983.5M$4.34B
2025Q328982.8M$3.73B
2025Q227683.3M$3.04B
2025Q127382.8M$3.04B
2024Q428483.4M$3.27B
2024Q327883.8M$3.15B
2024Q223587.7M$2.52B
2024Q122987.5M$2.82B
2023Q49327.3M$640M
2023Q38122.7M$472M
2023Q26617.6M$386M
Largest reported holders, 2026Q2
HolderShares% of companyValue
BlackRock Inc.12.4M15%$632M
VANGUARD GROUP INC8.9M11%$455M
FMR LLC5.3M6.5%$271M
Invesco Ltd.4.5M5.4%$227M
PRICE T ROWE ASSOCIATES INC /MD/4.4M5.4%$224M
STATE STREET CORP3.3M4.0%$166M
GOLDMAN SACHS GROUP INC2.9M3.5%$148M
GEODE CAPITAL MANAGEMENT LLC2.9M3.5%$146M
Neuberger Berman Group LLC2.4M3.0%$123M
T. Rowe Price Investment Management, Inc.1.8M2.2%$91M
Short interest by settlement date, Aug 29, 2025 to Sep 15, 2026
SettlementShares shortOf shares outstandingDays to cover
Sep 15, 20263.1M3.8%5.1
Aug 31, 20263.8M4.6%7.3
Aug 14, 20263.1M3.7%3.4
Jul 31, 20262.9M3.5%5.3
Jul 15, 20263.0M3.6%5.0
Jun 30, 20263.4M4.1%3.0
Jun 15, 20263.2M3.8%3.5
May 29, 20263.2M3.9%3.8
May 15, 20263.5M4.3%2.4
Apr 30, 20263.7M4.5%3.9
Apr 15, 20264.4M5.3%1.7
Mar 31, 20262.4M3.0%3.1

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold. The short position is FINRA's consolidated count for each twice-monthly settlement date, as a share of shares outstanding.

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