ACM Research, Inc. - Class A Stock (ACMR)

Historical Holders from Q4 2017 to Q3 2025

Symbol: ACMR on Nasdaq
Type / Class: Equity / Class A Stock
Shares outstanding: 58,891,333
All holders as of 30 Sep 2025: Q3 2025
Total 13F shares, excl. options: 41,760,035
Holdings value: $1,634,031,496
% of all portfolios: 0.01%
Number of holders: 253
Number of buys: 139
Number of sells: -121
Average buys %: +0%
Average sells %: -0%

Reported Shares, Excluding Options vs Price

Reported Value, Excluding Options

Total Investors

Significant Owners of ACM Research, Inc. - Class A Stock (ACMR)

Filer	Ownership	Change %	Holdings Value	Net Change	Nb Shares	Change %	Reporting Name	Report Period
BlackRock, Inc.	12.6%	+85.7%	$200,125,707	+$96,872,680	7,420,308	+93.8%	BlackRock, Inc.	30 Sep 2025
Yiheng Capital Management, L.P.	1.2%		$14,145,634		666,304		Yiheng Capital Partners, L.P.	30 Sep 2024

Institutional Holders of ACM Research, Inc. - Class A Stock (ACMR)

Period	Reported Shares, Excl. Options	Value, Excl. Options	Value Change	Puts Notional Value	Calls Notional Value	Price	Investors
2025 Q3	41,760,035	$1,634,031,496	+$212,050,464	$80,203,480	$119,357,581	$39.13	253
2025 Q2	37,392,460	$968,630,450	+$59,233,569	$50,846,080	$40,654,598	$25.90	238
2025 Q1	35,841,980	$837,275,246	+$17,599,939	$38,267,447	$50,026,032	$23.34	239
2024 Q4	35,668,005	$538,575,863	+$1,582,438	$23,122,025	$14,123,803	$15.10	177
2024 Q3	32,339,282	$656,856,262	-$37,712,927	$18,577,010	$24,502,048	$20.30	181
2024 Q2	33,508,121	$772,714,047	+$5,942,475	$26,182,324	$19,967,654	$23.06	195
2024 Q1	32,763,159	$954,762,451	+$25,181,100	$20,022,094	$23,897,714	$29.14	194
2023 Q4	32,892,829	$642,774,193	+$39,830,721	$6,981,642	$19,999,282	$19.54	154
2023 Q3	31,082,900	$562,774,649	+$38,989,842	$6,381,456	$16,842,303	$18.10	153
2023 Q2	29,261,051	$382,648,185	+$726,292	$1,872,126	$15,940,176	$13.08	121
2023 Q1	29,370,632	$343,635,569	+$920,863	$5,613,630	$23,478,450	$11.70	128
2022 Q4	30,422,642	$234,556,379	-$60,173,329	$1,540,502	$7,158,748	$7.71	120
2022 Q3	34,915,788	$435,076,889	-$23,398,496	$4,292,000	$21,011,000	$12.46	113
2022 Q2	36,066,144	$606,711,091	+$101,866,278	$6,740,000	$4,716,000	$16.83	98
2022 Q1	29,321,200	$606,652,154	+$405,127,320	$24,164,000	$22,164,000	$20.69	95
2021 Q4	8,766,331	$747,439,596	-$36,495,630	$15,264,000	$7,274,000	$85.27	99
2021 Q3	8,908,016	$979,616,110	+$172,129,886	$101,379,000	$48,252,000	$110.00	94
2021 Q2	7,370,254	$753,404,436	+$22,572,688	$31,937,000	$90,685,000	$102.22	93
2021 Q1	7,259,073	$586,489,643	+$146,266,911	$70,734,000	$21,739,000	$80.79	92
2020 Q4	5,443,661	$442,291,701	+$12,069,420	$12,899,000	$14,093,000	$81.25	91
2020 Q3	5,159,767	$356,662,075	+$26,674,819	$64,706,000	$18,328,000	$69.10	87
2020 Q2	4,964,007	$309,515,964	+$77,613,417	$44,240,000	$10,500,000	$62.36	83
2020 Q1	3,818,506	$113,063,847	+$39,231,858	$2,402,000	$965,000	$29.61	61
2019 Q4	2,963,810	$54,685,221	+$2,169,281			$18.45	44
2019 Q3	2,923,158	$40,506,857	+$8,790,813			$13.86	46
2019 Q2	1,745,428	$27,238,673	+$4,238,707			$15.61	36
2019 Q1	1,464,505	$22,588,512	-$391,231			$15.42	28
2018 Q4	1,558,409	$16,945,000	-$1,305,490			$10.87	27
2018 Q3	1,679,926	$18,592,328	-$790,077			$11.07	31
2018 Q2	1,754,578	$18,915,000	+$9,677,053			$10.78	34
2018 Q1	849,051	$10,442,000	+$324,928			$12.30	11
2017 Q4	873,847	$4,571,000	+$4,571,000			$5.25	10