ACM Research, Inc. (ACMR) — Institutional Holders, Q2 2026

378 institutional investment managers reported a ACMR position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $6.1B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← ACMR stock profile

ACMR in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

118

Added to

125

Trimmed

Sold out

Biggest buyers

Capital World InvestorsNew · +2,398,036 sh+$304.3M
VANGUARD PORTFOLIO MANAGEMENTAdded · +1,145,605 sh+$145.4M
WFM ASIA (BVI) LtdNew · +969,200 sh+$123.0M
BlackRockAdded · +675,995 sh+$85.8M
FULLER & THALER ASSET MANAGEMENTNew · +639,448 sh+$81.1M

Biggest sellers

WCM INVESTMENT MANAGEMENTTrimmed · -943,223 sh-$119.7M
Longaeva Partners L.P.Trimmed · -690,647 sh-$87.6M
SOUTHEASTERN ASSET MANAGEMENTTrimmed · -643,422 sh-$81.6M
Oxbow Capital Management (HK) LtdSold out · -596,689 sh-$75.7M
LSV ASSET MANAGEMENTTrimmed · -533,207 sh-$67.7M

ACMR 13F holders ranked 1–100 of 378

Institutional investors reporting a position in ACM Research, Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 8,660,842 sh	8,660,842	$1.1B	0.02%	+8.5%
2	VANGUARD PORTFOLIO MANAGEMENT#2 · 3,349,436 sh	3,349,436	$425.0M	0.02%	+52.0%
3	VANGUARD CAPITAL MANAGEMENT#3 · 2,462,745 sh	2,462,745	$312.5M	<0.01%	+8.8%
4	Capital World Investors#4 · 2,398,036 sh	2,398,036	$304.3M	0.04%	New
5	STATE STREET#5 · 2,188,254 sh	2,188,254	$277.7M	<0.01%	+9.1%
6	GEODE CAPITAL MANAGEMENT#6 · 1,487,797 sh	1,487,797	$188.8M	0.01%	+8.5%
7	Invesco Ltd.#7 · 1,170,080 sh	1,170,080	$148.5M	0.01%	+48.7%
8	Value Aligned Research Advisors#8 · 1,053,949 sh	1,053,949	$133.7M	0.33%	+10.3%
9	WFM ASIA (BVI) Ltd#9 · 969,200 sh	969,200	$123.0M	18.56%	New
10	DIMENSIONAL FUND ADVISORS#10 · 954,474 sh	954,474	$121.1M	0.02%	+32.7%
11	WCM INVESTMENT MANAGEMENT#11 · 917,651 sh	917,651	$109.1M	0.20%	-50.7%
12	Tekne Capital Management#12 · 737,500 sh	737,500	$93.6M	30.62%	+3.1%
13	MORGAN STANLEY#13 · 700,185 sh	700,185	$88.8M	<0.01%	-41.3%
14	FMR#14 · 672,184 sh	672,184	$85.3M	<0.01%	+6.8%
15	FULLER & THALER ASSET MANAGEMENT#15 · 639,448 sh	639,448	$81.1M	0.22%	New
16	GILDER GAGNON HOWE#16 · 637,058 sh	637,058	$80.8M	0.83%	+794.2%
17	CITADEL ADVISORS#17 · 636,836 sh	636,836	$80.8M	<0.01%	+213.1%
18	Capital International Investors#18 · 623,429 sh	623,429	$79.1M	0.02%	New
19	Polunin Capital Partners Ltd#19 · 748,498 sh	748,498	$77.1M	—	-1.9%
20	PRICE T ROWE ASSOCIATES#20 · 591,573 sh	591,573	$75.1M	<0.01%	+172.7%
21	NORTHERN#21 · 569,126 sh	569,126	$72.2M	<0.01%	+1.2%
22	Jupiter Topco#22 · 553,768 sh	553,768	$70.2M	0.03%	—
23	CHARLES SCHWAB INVESTMENT MANAGEMENT#23 · 526,760 sh	526,760	$66.8M	<0.01%	+9.5%
24	BANK OF AMERICA#24 · 479,706 sh	479,706	$60.9M	<0.01%	+19.2%
25	Toroso Investments#25 · 470,937 sh	470,937	$59.8M	0.10%	+50.1%
26	GOLDMAN SACHS GROUP#26 · 426,243 sh	426,243	$54.1M	<0.01%	-22.8%
27	VANGUARD FIDUCIARY#27 · 404,100 sh	404,100	$51.3M	0.01%	+18.4%
28	UBS Group AG#28 · 402,473 sh	402,473	$51.1M	<0.01%	-0.4%
29	PRINCIPAL FINANCIAL GROUP#29 · 370,913 sh	370,913	$47.1M	0.02%	+8.9%
30	WEXFORD CAPITAL#30 · 355,400 sh	355,400	$45.1M	5.77%	-40.7%
31	Mitsubishi UFJ & Banking#31 · 351,204 sh	351,204	$44.6M	0.10%	-24.6%
32	Raiffeisen Bank International AG#32 · 360,000 sh	360,000	$42.8M	0.50%	-5.3%
33	Bank of New York Mellon#33 · 326,284 sh	326,284	$41.4M	<0.01%	+3.7%
34	AQR CAPITAL MANAGEMENT#34 · 314,172 sh	314,172	$39.9M	0.01%	-2.9%
35	FIRST ADVISORS#35 · 306,034 sh	306,034	$38.8M	0.02%	-18.2%
36	Penn Capital Management Company#36 · 285,790 sh	285,790	$36.3M	2.30%	-28.2%
37	Qube Research & Technologies Ltd#37 · 280,015 sh	280,015	$35.5M	0.03%	-61.3%
38	Oasis Management Ltd.#38 · 274,525 sh	274,525	$34.8M	1.86%	+1.6%
39	MACKENZIE FINANCIAL#39 · 268,004 sh	268,004	$34.0M	0.03%	+278.1%
40	Cederberg Capital Ltd#40 · 254,669 sh	254,669	$32.3M	32.20%	-57.5%
41	SUSQUEHANNA INTERNATIONAL GROUP, LLP#41 · 253,671 sh	253,671	$32.2M	<0.01%	+324.6%
42	MY.Alpha Management HK Advisors Ltd#42 · 249,500 sh	249,500	$31.7M	12.19%	New
43	RENAISSANCE TECHNOLOGIES#43 · 229,800 sh	229,800	$29.2M	0.04%	+87.4%
44	12 West Capital Management#44 · 225,000 sh	225,000	$28.6M	5.34%	+3588.5%
45	CONGRESS ASSET MANAGEMENT#45 · 223,855 sh	223,855	$28.4M	—	-34.1%
46	Russell Investments Group, Ltd.#46 · 221,775 sh	221,775	$28.1M	0.02%	+37.8%
47	TWO SIGMA INVESTMENTS#47 · 212,544 sh	212,544	$27.0M	0.02%	+305.5%
48	CITIGROUP#48 · 209,845 sh	209,845	$26.6M	<0.01%	-66.1%
49	JPMORGAN CHASE#49 · 214,853 sh	214,853	$25.8M	<0.01%	-27.8%
50	PUBLIC SECTOR PENSION INVESTMENT BOARD#50 · 196,012 sh	196,012	$24.9M	0.06%	+2.8%
51	JACOBS LEVY EQUITY MANAGEMENT#51 · 191,966 sh	191,966	$24.4M	0.09%	-21.4%
52	NEW YORK STATE COMMON RETIREMENT FUND#52 · 191,535 sh	191,535	$24.3M	0.03%	-26.2%
53	Steamboat Capital Partners#53 · 182,773 sh	182,773	$23.2M	4.96%	-18.2%
54	Portolan Capital Management#54 · 177,432 sh	177,432	$22.5M	0.84%	+113.1%
55	WELLINGTON MANAGEMENT GROUP LLP#55 · 174,987 sh	174,987	$22.2M	<0.01%	New
56	NOMURA ASSET MANAGEMENT INTERNATIONAL#56 · 169,322 sh	169,322	$21.5M	0.03%	+907.9%
57	GROUP ONE TRADING, L.P.#57 · 157,056 sh	157,056	$19.9M	0.03%	+71.8%
58	Nuveen#58 · 148,494 sh	148,494	$18.8M	<0.01%	+32.7%
59	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#59 · 146,414 sh	146,414	$18.6M	<0.01%	+58.7%
60	FRANKLIN RESOURCES#60 · 145,385 sh	145,385	$18.4M	<0.01%	+50.8%
61	MILLENNIUM MANAGEMENT#61 · 140,501 sh	140,501	$17.8M	<0.01%	+114.3%
62	SOUTHEASTERN ASSET MANAGEMENT#62 · 139,478 sh	139,478	$17.7M	0.92%	-82.2%
63	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT#63 · 132,396 sh	132,396	$16.8M	5.76%	-4.6%
64	RHUMBLINE ADVISERS#64 · 128,979 sh	128,979	$16.4M	0.01%	-9.2%
65	Legal & General Group Plc#65 · 125,619 sh	125,619	$15.9M	<0.01%	-0.5%
66	BRIGHT VALLEY CAPITAL Ltd#66 · 118,000 sh	118,000	$15.0M	2.39%	New
67	DODGE & COX#67 · 116,392 sh	116,392	$14.8M	<0.01%	-2.9%
68	AMERIPRISE FINANCIAL#68 · 115,178 sh	115,178	$14.6M	<0.01%	-45.7%
69	Horiko Capital Management#69 · 106,628 sh	106,628	$13.5M	2.38%	+61.6%
70	THOMPSON SIEGEL & WALMSLEY#70 · 105,790 sh	105,790	$13.4M	0.24%	+4.6%
71	Swiss National Bank#71 · 103,600 sh	103,600	$13.1M	<0.01%	-2.8%
72	AMERICAN CENTURY COMPANIES#72 · 101,200 sh	101,200	$12.8M	<0.01%	-32.8%
73	RPg Family Wealth Advisory#73 · 98,166 sh	98,166	$12.5M	2.04%	+7.8%
74	LPL Financial#74 · 93,288 sh	93,288	$11.8M	<0.01%	+12.3%
75	DEUTSCHE BANK AG\#75 · 90,500 sh	90,500	$11.5M	<0.01%	+13.3%
76	BNP PARIBAS FINANCIAL MARKETS#76 · 86,340 sh	86,340	$11.0M	<0.01%	+61.3%
77	STOREBRAND ASSET MANAGEMENT AS#77 · 80,510 sh	80,510	$10.2M	0.03%	-55.3%
78	Intrinsic Edge Capital Management#78 · 80,000 sh	80,000	$10.2M	1.05%	0.0%
79	HEALTHCARE OF ONTARIO PENSION PLAN FUND#79 · 74,778 sh	74,778	$9.5M	0.01%	+30.8%
80	Kendall Capital Management#80 · 72,820 sh	72,820	$9.2M	—	-12.4%
81	Aperture Investors#81 · 70,569 sh	70,569	$9.0M	0.81%	+244.5%
82	LAZARD ASSET MANAGEMENT#82 · 63,784 sh	63,784	$8.1M	0.01%	+48.2%
83	Atika Capital Management#83 · 63,000 sh	63,000	$8.0M	0.53%	New
84	Inspire Investing#84 · 62,959 sh	62,959	$8.0M	—	+0.4%
85	Kerrisdale Advisers#85 · 62,570 sh	62,570	$7.9M	1.99%	-72.0%
86	WELLS FARGO & COMPANY#86 · 58,627 sh	58,627	$7.4M	<0.01%	-71.3%
87	PRUDENTIAL FINANCIAL#87 · 58,505 sh	58,505	$7.4M	<0.01%	+8.1%
88	BESSEMER GROUP#88 · 55,961 sh	55,961	$7.1M	<0.01%	+0.1%
89	Quantinno Capital Management#89 · 54,218 sh	54,218	$6.9M	<0.01%	+0.5%
90	Quadrature Capital Ltd#90 · 48,891 sh	48,891	$6.2M	0.05%	New
91	GREAT WEST LIFE ASSURANCE#91 · 45,391 sh	45,391	$5.7M	<0.01%	+4.5%
92	SIMPLEX TRADING#92 · 44,316 sh	44,316	$5.6M	<0.01%	+81.1%
93	Focus Partners Wealth#93 · 43,904 sh	43,904	$5.6M	<0.01%	+3.9%
94	Neuberger Berman Group#94 · 44,245 sh	44,245	$5.4M	<0.01%	+74.8%
95	SG Americas Securities#95 · 41,603 sh	41,603	$5.3M	<0.01%	+94.9%
96	CenterBook Partners#96 · 41,438 sh	41,438	$5.3M	0.26%	New
97	BARCLAYS PLC#97 · 40,321 sh	40,321	$5.1M	<0.01%	-18.0%
98	SEI INVESTMENTS#98 · 40,313 sh	40,313	$5.1M	<0.01%	-52.6%
99	VANGUARD ASSET MANAGEMENT, Ltd#99 · 38,739 sh	38,739	$4.9M	<0.01%	+7.9%
100	Kultura Capital Management#100 · 37,725 sh	37,725	$4.8M	0.86%	New

Funds that sold out of ACMR in Q2 2026 (39)

Held ACMR at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held ACMR in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Oxbow Capital Management (HK) Ltd596,689 sh	596,689	$23.5M
HRT FINANCIAL129,328 sh	129,328	$5.1M
SEGALL BRYANT & HAMILL89,736 sh	89,736	$4.3M
Nearwater Capital Markets, Ltd94,200 sh	94,200	$3.7M
Y-Intercept (Hong Kong) Ltd76,212 sh	76,212	$3.0M
HUSSMAN STRATEGIC ADVISORS63,000 sh	63,000	$2.5M
BALYASNY ASSET MANAGEMENT L.P.47,076 sh	47,076	$1.9M
BOOTHBAY FUND MANAGEMENT38,194 sh	38,194	$1.5M
Capelight Capital Asset Management30,000 sh	30,000	$1.2M
GSA CAPITAL PARTNERS LLP26,759 sh	26,759	$1.1M
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO26,055 sh	26,055	$1.0M
Gordian Capital Singapore Pte Ltd26,000 sh	26,000	$1.0M
Blackstone20,241 sh	20,241	$796.5K
Brevan Howard Capital Management19,499 sh	19,499	$767.3K
Magnetar Financial18,303 sh	18,303	$720.2K
MIRABELLA FINANCIAL SERVICES LLP17,105 sh	17,105	$673.1K
Harvest Investment Services14,182 sh	14,182	$558.1K
Vontobel Holding Ltd.14,143 sh	14,143	$556.5K
ALLSTATE10,146 sh	10,146	$399.2K
Numerai GP10,073 sh	10,073	$396.4K
Headlands Technologies7,773 sh	7,773	$305.9K
Beacon Pointe Advisors7,666 sh	7,666	$301.7K
Pekin Hardy Strauss7,500 sh	7,500	$295.1K
Independent Advisor Alliance7,007 sh	7,007	$275.7K
INCEPTIONR6,203 sh	6,203	$244.1K
NOMURA5,521 sh	5,521	$217.3K
Olympiad Research5,138 sh	5,138	$202.2K
Harel Insurance Investments & Financial Services Ltd.2,040 sh	2,040	$80.0K
QUADRANT CAPITAL GROUP1,138 sh	1,138	$71.4K
NBC SECURITIES400 sh	400	$15.7K
Federation des caisses Desjardins du Quebec285 sh	285	$11.2K
UNIVERSITY OF TEXAS/TEXAS AM INVESTMENT MANAGEMENT224 sh	224	$8.8K
Golden State Equity Partners82 sh	82	$3.2K
Medallion Wealth Advisors57 sh	57	$2.2K
Advisory Services Network41 sh	41	$1.6K
Versant Capital Management40 sh	40	$1.6K
MAI Capital Management31 sh	31	$1.2K
TWIN PEAKS WEALTH ADVISORS11 sh	11	$433.00
Rachor Investment Advisory Services11 sh	11	$433.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.