Company · Ownership research

Atmus Filtration Technologies Inc. ATMU

CIK 0001921963 · CUSIP 04956D107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 04956D107 (ATMU), not CUSIP 04956D907 (ATMU), CUSIP 04956D957 (ATMU), and does not merge CUSIPs.

This page lists the top 20 of 136 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$92.17M 2,122,377 shares	0.00%	-745.89K(-26.00%)Reduced	SEC filing ↗ Nov 6, 2026	▾
02	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$68.39M 1,575,032 shares	0.01%	+114.10K(+7.80%)Added	SEC filing ↗ Nov 4, 2026	▾
03	Channing Capital Management, LLC CIK 1302404 · View history	$55.68M 1,282,339 shares	1.46%	-443.62K(-25.70%)Reduced	SEC filing ↗ Nov 2, 2026	▾
04	Boston Trust Walden Corp CIK 1534866 · View history	$29.06M 669,203 shares	0.23%	-40.56K(-5.70%)Reduced	SEC filing ↗ Oct 30, 2026	▾
05	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$24.89M 573,169 shares	0.01%	+90.78K(+18.80%)Added	SEC filing ↗ Nov 2, 2026	▾
06	Bank of New York Mellon Corp CIK 1390777 · View history	$23.92M 550,836 shares	0.00%	-28.03K(-4.80%)Reduced	SEC filing ↗ Nov 5, 2026	▾
07	Aberdeen Group plc CIK 1716774 · View history	$21.73M 500,513 shares	0.03%	-21.21K(-4.10%)Reduced	SEC filing ↗ Nov 6, 2026	▾
08	Allspring Global Investments Holdings, LLC CIK 1890906 · View history	$18.85M 422,745 shares	0.03%	+52.66K(+14.20%)Added	SEC filing ↗ Nov 4, 2026	▾
09	WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC CIK 1644956 · View history	$14.42M 332,011 shares	0.05%	-73.16K(-18.10%)Reduced	SEC filing ↗ Nov 6, 2026	▾
10	Russell Investments Group, Ltd. CIK 1692234 · View history	$10.77M 247,944 shares	0.01%	+117.89K(+90.60%)Added	SEC filing ↗ Nov 6, 2026	▾
11	PRENTISS SMITH & CO INC CIK 1134687 · View history	$5.08M 116,931 shares	2.87%	-3.56K(-3.00%)Reduced	SEC filing ↗ Oct 27, 2026	▾
12	Thrivent Financial for Lutherans CIK 314984 · View history	$5.06M 116,541 shares	0.01%	-2.10K(-1.80%)Reduced	SEC filing ↗ Nov 5, 2026	▾
13	FIFTH THIRD BANCORP CIK 35527 · View history	$4.71M 108,431 shares	0.01%	+14.93K(+16.00%)Added	SEC filing ↗ Nov 5, 2026	▾
14	DEUTSCHE BANK AG\ CIK 948046 · View history	$3.70M 85,216 shares	0.00%	-5.30K(-5.90%)Reduced	SEC filing ↗ Nov 6, 2026	▾
15	Moody Aldrich Partners LLC CIK 936941 · View history	$3.27M 75,415 shares	0.63%	+3.02K(+4.20%)Added	SEC filing ↗ Oct 27, 2026	▾
16	Vest Financial, LLC CIK 1709632 · View history	$2.88M 66,247 shares	0.03%	-37.11K(-35.90%)Reduced	SEC filing ↗ Oct 21, 2026	▾
17	Riverwater Partners LLC CIK 1882572 · View history	$1.91M 43,911 shares	0.53%	0(0.00%)Unchanged	SEC filing ↗ Nov 3, 2026	▾
18	Illinois Municipal Retirement Fund CIK 1541910 · View history	$1.85M 42,578 shares	0.02%	+203(+0.50%)Added	SEC filing ↗ Nov 5, 2026	▾
19	Knights of Columbus Asset Advisors LLC CIK 1688666 · View history	$1.78M 41,056 shares	0.09%	+193(+0.50%)Added	SEC filing ↗ Nov 5, 2026	▾
20	DekaBank Deutsche Girozentrale CIK 1456228 · View history	$1.67M 38,503 shares	0.00%	+24.25K(+170.10%)Added	SEC filing ↗ Oct 27, 2026	▾

Showing 20 / 136 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

136

Cancelled or null records excluded

Disclosed shares

9,725,560

Not deduplicated across managers

Disclosed value

$422.80M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Atmus Filtration Technologies Inc. · Q3 2026

Explore all 136 reporting institutions.

This page includes 20 of 136 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 136 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"04956D107","quarter":"2026Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.