Company · Ownership research

ACM Research, Inc. ACMR

CIK 0001680062 · CUSIP 00108J109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 00108J109 (ACMR), not CUSIP 00108J909 (ACMR), CUSIP 00108J959 (ACMR), and does not merge CUSIPs.

This page lists the top 20 of 244 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	VANGUARD GROUP INC CIK 102909 · View history	$111.28M 4,296,442 shares	0.00%	+241.10K(+5.90%)Added	SEC filing ↗ Aug 11, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$106.35M 4,106,092 shares	0.00%	-106.36K(-2.50%)Reduced	SEC filing ↗ Aug 12, 2025	▾
03	Mitsubishi UFJ Trust & Banking Corp CIK 1462160 · View history	$59.63M 2,302,351 shares	0.14%	+649.12K(+39.30%)Added	SEC filing ↗ Aug 8, 2025	▾
04	Triata Capital Ltd CIK 2014039 · View history	$41.19M 1,590,225 shares	8.04%	+219.10K(+16.00%)Added	SEC filing ↗ Aug 14, 2025	▾
05	FEDERATED HERMES, INC. CIK 1056288 · View history	$36.82M 1,421,688 shares	0.07%	+348.94K(+32.50%)Added	SEC filing ↗ Aug 13, 2025	▾
06	STATE STREET CORP CIK 93751 · View history	$32.50M 1,254,699 shares	0.00%	+17.38K(+1.40%)Added	SEC filing ↗ Aug 14, 2025	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$32.07M 1,238,031 shares	0.00%	+21.37K(+1.80%)Added	SEC filing ↗ Aug 8, 2025	▾
08	SOUTHEASTERN ASSET MANAGEMENT INC/TN/ CIK 807985 · View history	$30.71M 1,185,744 shares	1.55%	+1.19MNew	SEC filing ↗ Aug 14, 2025	▾
09	Pertento Partners LLP CIK 1894571 · View history	$26.54M 1,024,632 shares	3.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2025	▾
10	Broad Bay Capital Management, LP CIK 1759115 · View history	$25.35M 978,653 shares	3.56%	+73.16K(+8.10%)Added	SEC filing ↗ Aug 14, 2025	▾
11	Invesco Ltd. CIK 914208 · View history	$21.39M 825,989 shares	0.00%	-513.11K(-38.30%)Reduced	SEC filing ↗ Aug 13, 2025	▾
12	GOLDMAN SACHS GROUP INC CIK 886982 · View history	$20.03M 773,472 shares	0.00%	+397.53K(+105.70%)Added	SEC filing ↗ Aug 14, 2025	▾
13	Nuveen, LLC CIK 1871926 · View history	$18.50M 714,311 shares	0.01%	+577.13K(+420.70%)Added	SEC filing ↗ Aug 12, 2025	▾
14	Steamboat Capital Partners, LLC CIK 1635663 · View history	$15.02M 579,975 shares	4.28%	+104.97K(+22.10%)Added	SEC filing ↗ Aug 14, 2025	▾
15	NORTHERN TRUST CORP CIK 73124 · View history	$14.58M 563,027 shares	0.00%	+50.70K(+9.90%)Added	SEC filing ↗ Aug 13, 2025	▾
16	MORGAN STANLEY CIK 895421 · View history	$14.29M 551,780 shares	0.00%	+77.04K(+16.20%)Added	SEC filing ↗ Aug 14, 2025	▾
17	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$14.03M 541,737 shares	0.00%	-174.82K(-24.40%)Reduced	SEC filing ↗ Aug 14, 2025	▾
18	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$13.43M 518,349 shares	0.01%	+478.07K(+1,187.00%)Added	SEC filing ↗ Aug 14, 2025	▾
19	LSV ASSET MANAGEMENT CIK 1050470 · View history	$11.52M 444,900 shares	0.03%	+444.90KNew	SEC filing ↗ Aug 11, 2025	▾
20	Raiffeisen Bank International AG CIK 2044885 · View history	$11.33M 435,000 shares	0.17%	-65.00K(-13.00%)Reduced	SEC filing ↗ Aug 11, 2025	▾

Showing 20 / 244 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

244

Cancelled or null records excluded

Disclosed shares

37,413,919

Not deduplicated across managers

Disclosed value

$969.19M

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.

ACM Research, Inc. · Q2 2025

Explore all 244 reporting institutions.

This page includes 20 of 244 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 244 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":"00108J109","quarter":"2025Q2","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.