ACM Research ACMR Institutional Ownership

NASDAQ ACMR

$72.00 -0.39 (-0.54%)

As of: Sep 11, 2026 · 3:59 PM EDT

Institutions by Trading Activity

377 Institutions

Increased 247 65.5%

Unchanged 38 10.1%

Reduced 92 24.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

72.17%

▲+3.05 pp QoQ

Shares Held by Institutions

49.00Mn

of 67.89Mn outstanding

▲+17.10% QoQ

Shares Outstanding

67.89Mn

18.89Mn held outside 13F filers

Institutional Investors

377

filed 13F for Jun 2026

▲+78 vs prior quarter

Net Shares Added (QoQ)

+7.16Mn

accumulated since last quarter

Value of Holdings

$3.65Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

ACM Research, Inc. (NASDAQ:ACMR) showed up in the 13F filings of 377 institutional investors as of June 2026.

These investors collectively held 72.2% of ACM Research's outstanding shares in June 2026, up from 69.1% in March 2026.
They increased total shares held in ACMR by 17.1% quarter over quarter, and investors in ACM Research increased 55.79% from a year ago.
Activity in ACMR broke down as 247 buyers, 92 sellers, and 38 unchanged among 377 total holders.
Combined, these investors held 49.0Mn shares in ACMR for June 2026, up by 7.16Mn shares quarter on quarter, and up 11.69Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in ACM Research with 8.66Mn shares, accounting for 12.76% of total shares outstanding.
Leading buyers of ACM Research shares for the quarter ending June 2026 were Capital World Investors (2.4Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.15Mn), WFM ASIA (BVI) Ltd (969.2K), BlackRock, Inc. (676.0K), FULLER & THALER ASSET MANAGEMENT, INC. (639.45K).
The biggest sellers of ACM Research for the quarter ending June 2026 included WCM INVESTMENT MANAGEMENT, LLC (943.22K), Longaeva Partners L.P. (690.65K), SOUTHEASTERN ASSET MANAGEMENT INC/TN/ (643.42K), LSV ASSET MANAGEMENT (533.21K), Morgan Stanley (492.52K).
Per Business Quant data, the top 10 holders of ACM Research for the quarter ending June 2026 are BlackRock, Inc. (8.66Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.35Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.46Mn), Capital World Investors (2.4Mn), State Street Corp (2.19Mn), GEODE CAPITAL MANAGEMENT, LLC (1.49Mn), Invesco Ltd. (1.17Mn), Value Aligned Research Advisors, LLC (1.05Mn), WFM ASIA (BVI) Ltd (969.2K), DIMENSIONAL FUND ADVISORS LP (954.47K).

Form 13F Holdings

377 Institutional Holders

Report period 30 Jun, 2026

Total shares held 49.00Mn

Of outstanding 72.17%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	8,660,842	12.76%	▲675,995	+8.47%	$1.10Bn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,349,436	4.93%	▲1,145,605	+51.98%	$425.01Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,462,745	3.63%	▲198,408	+8.76%	$312.50Mn
4	Capital World Investors	0001422849	2,398,036	3.53%	▲2,398,036	0.00%	$304.29Mn
5	State Street Corp	0000093751	2,188,254	3.22%	▲182,138	+9.08%	$277.67Mn
6	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,487,797	2.19%	▲116,570	+8.50%	$188.82Mn
7	Invesco Ltd.	0000914208	1,170,080	1.72%	▲382,979	+48.66%	$148.47Mn
8	Value Aligned Research Advisors, LLC	0001963565	1,053,949	1.55%	▲98,022	+10.25%	$133.74Mn
9	WFM ASIA (BVI) Ltd	0001632574	969,200	1.43%	▲969,200	0.00%	$122.98K
10	DIMENSIONAL FUND ADVISORS LP	0000354204	954,474	1.41%	▲235,451	+32.75%	$121.07Mn
11	WCM INVESTMENT MANAGEMENT, LLC	0001061186	917,651	1.35%	▼943,223	-50.69%	$109.09Mn
12	Polunin Capital Partners Ltd	0001629869	748,498	1.10%	▼14,820	-1.94%	$77.10K
13	Tekne Capital Management, LLC	0001558971	737,500	1.09%	▲22,500	+3.15%	$93.58Mn
14	Morgan Stanley	0000895421	700,185	1.03%	▼492,520	-41.29%	$88.85Mn
15	FMR LLC	0000315066	672,184	0.99%	▲42,940	+6.82%	$85.29Mn
16	FULLER & THALER ASSET MANAGEMENT, INC.	0001082327	639,448	0.94%	▲639,448	0.00%	$81.14Mn
17	GILDER GAGNON HOWE & CO LLC	0000902464	637,058	0.94%	▲565,813	+794.18%	$80.84Mn
18	CITADEL ADVISORS LLC	0001423053	636,836	0.94%	▲433,458	+213.13%	$80.81Mn
19	Capital International Investors	0001562230	623,429	0.92%	▲623,429	0.00%	$79.11Mn
20	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	591,573	0.87%	▲374,618	+172.67%	$75.07K

Showing 1 to 20 of 377 holders