ACM Research (ACMR) insider trading activity: Get Latest News Today

ACMR Stock Outstanding Shares

Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares6.26

Short Percent Of Float8.41

Shares Outstanding58.11M

Shares Float51.34M

Shares Short3.95M

Short Ratio1.99

8.41%

Short % of Float

6.26%

Short % of Shares Outstanding

Market Insider ACMR

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

15.32% Percentage of Shares held by All Insiders

69.1% Percentage of Shares held by All Institutions

81.6% Percentage of Float held by Institutions

261

Number of Institutions Holding Shares

Institutional Ownership

About 69.1% of ACMR shares are held by financial institutions. BLACKROCK INC. is the top corporate investor, holding 3.96M shares valued at $115.44M. A 6.52% stake in ACM Research, Inc. is owned by the company. VANGUARD GROUP INC owns 3.98M shares valued at $116.08M, which translates its holding of 6.55% of the stake in the company.

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Mar 31, 2024	BLACKROCK INC.	6.52%	3.96M	115.44M	235.94K	+633.30%
Mar 31, 2024	VANGUARD GROUP INC	6.55%	3.98M	116.08M	-73.73K	-181.72%
Mar 31, 2024	POINT72 ASSET MANAGEMENT, L.P.	0.24%	145.5K	4.24M	112.97K	+34,730.69%
Mar 31, 2024	RENAISSANCE TECHNOLOGIES LLC	0.24%	145.8K	4.25M	145.8K	+10,000.00%
Mar 31, 2024	CUBIST SYSTEMATIC STRATEGIES, LLC	0.25%	153.91K	4.48M	153.91K	+10,000.00%
Mar 31, 2024	FRANKLIN RESOURCES INC	0.26%	155.59K	4.53M	133.72K	+61,160.35%
Mar 31, 2024	HUSSMAN STRATEGIC ADVISORS, INC.	0.26%	157.5K	4.59M	500	+31.85%
Mar 31, 2024	WESTEND CAPITAL MANAGEMENT, LLC	0.27%	164.79K	4.8M	164.79K	+10,000.00%
Mar 31, 2024	STATE OF WISCONSIN INVESTMENT BOARD	0.23%	137.59K	4.01M	137.59K	+10,000.00%
Mar 31, 2024	BANK OF NEW YORK MELLON CORP	0.36%	217.03K	6.32M	-16.69K	-714.22%
Mar 31, 2024	MILLENNIUM MANAGEMENT LLC	0.4%	240.74K	7.02M	181.53K	+30,657.12%
Mar 31, 2024	M&G PLC	0.42%	255.61K	7.41M	255.61K	+10,000.00%
Mar 31, 2024	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.41%	249.94K	7.28M	146.75K	+14,221.09%
Mar 31, 2024	AMERIPRISE FINANCIAL INC	0.51%	307.62K	8.97M	100.99K	+4,887.19%
Mar 31, 2024	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC	0.6%	364.34K	10.62M	-326.51K	-4,726.20%
Mar 31, 2024	TRIATOMIC MANAGEMENT LP	0.08%	50K	1.46M	-287.1K	-8,516.76%
Mar 31, 2024	PANVIEW ASIAN EQUITY MASTER FUND	0.6%	367.75K	10.72M	-690K	-6,523.26%
Mar 31, 2024	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.62%	374.07K	10.9M	-99.11K	-2,094.54%
Mar 31, 2024	TWO SIGMA INVESTMENTS, LP	0.72%	438.57K	12.78M	355.27K	+42,648.86%
Mar 31, 2024	OBERWEIS ASSET MANAGEMENT INC/	0.73%	441.13K	12.85M	47.73K	+1,213.27%
Mar 31, 2024	NORTHERN TRUST CORP	0.76%	462.77K	13.49M	-4.77K	-102.11%
Mar 31, 2024	YIHENG CAPITAL MANAGEMENT, L.P.	0.79%	481.29K	14.02M	-31.41K	-612.62%
Mar 31, 2024	PORTOLAN CAPITAL MANAGEMENT, LLC	0.89%	538.43K	15.69M	-261.07K	-3,265.41%
Mar 31, 2024	CITIGROUP INC	0.98%	594.27K	17.32M	-1.14M	-6,577.94%
Mar 31, 2024	PERTENTO PARTNERS LLP	1.31%	795.3K	23.17M	-289.74K	-2,670.32%
Mar 31, 2024	BANK OF AMERICA CORP /DE/	1.33%	810.74K	23.63M	-1.14M	-5,854.28%
Mar 31, 2024	VOLORIDGE INVESTMENT MANAGEMENT, LLC	1.38%	841.1K	24.51M	175.88K	+2,643.98%
Mar 31, 2024	FULLER & THALER ASSET MANAGEMENT, INC.	1.43%	869.65K	25.34M	869.65K	+10,000.00%
Mar 31, 2024	NUVEEN ASSET MANAGEMENT, LLC	1.44%	873.88K	25.46M	729.99K	+50,731.94%
Mar 31, 2024	MORGAN STANLEY	1.58%	961.65K	28.02M	373.31K	+6,345.09%
Mar 31, 2024	STATE STREET CORP	1.75%	1.07M	31.04M	20.58K	+197.04%
Mar 31, 2024	NILSINE PARTNERS, LLC	0.22%	132.99K	3.88M	132.99K	+10,000.00%
Mar 31, 2024	FIRST TRUST ADVISORS LP	0.22%	132.31K	3.86M	4K	+311.82%
Mar 31, 2024	CLARIVEST ASSET MANAGEMENT LLC	0.21%	129.95K	3.79M	62.12K	+9,157.06%
Mar 31, 2024	QUBE RESEARCH & TECHNOLOGIES LTD	0.18%	107.34K	3.13M	107.34K	+10,000.00%
Mar 31, 2024	AMERICAN CENTURY COMPANIES INC	0.16%	96.87K	2.82M	24.69K	+3,420.84%
Mar 31, 2024	MITSUBISHI UFJ TRUST & BANKING CORP	0.15%	91.69K	2.78M	-59.46K	-3,933.94%
Mar 31, 2024	SWISS NATIONAL BANK	0.14%	87.8K	2.56M	1K	+115.21%
Mar 31, 2024	OSSIAM	0.14%	85.4K	2.49M	85.4K	+10,000.00%
Mar 31, 2024	RHUMBLINE ADVISERS	0.13%	77.26K	2.25M	2.08K	+276.65%
Mar 31, 2024	ARLINGTON CAPITAL MANAGEMENT, INC.	0.13%	77.1K	2.25M	8.88K	+1,301.30%
Mar 31, 2024	CALAMOS ADVISORS LLC	0.12%	72.16K	2.1M	-7.97K	-994.58%
Mar 31, 2024	RICE HALL JAMES & ASSOCIATES, LLC	0.11%	67.76K	1.97M	-12.76K	-1,584.70%
Mar 31, 2024	PRINCIPAL FINANCIAL GROUP INC	0.1%	63.23K	1.84M	63.23K	+10,000.00%
Mar 31, 2024	BNP PARIBAS ARBITRAGE, SNC	0.1%	60.53K	1.76M	41.99K	+22,645.35%
Mar 31, 2024	WELLS FARGO & COMPANY/MN	0.09%	56.76K	1.65M	4.23K	+805.00%
Mar 31, 2024	LPL FINANCIAL LLC	0.09%	54.35K	1.58M	22.45K	+7,035.61%
Mar 31, 2024	JACKSON CREEK INVESTMENT ADVISORS LLC	0.09%	52.81K	1.54M	-90	-17.01%
Mar 31, 2024	GEODE CAPITAL MANAGEMENT, LLC	1.77%	1.08M	31.42M	38.29K	+368.24%
Mar 31, 2024	ALLIANCEBERNSTEIN L.P.	0.08%	48.54K	1.41M	0	0
Mar 31, 2024	DEUTSCHE BANK AG\	0.29%	179.29K	5.22M	-1.25K	-69.40%
Mar 31, 2024	JANE STREET GROUP, LLC	0.32%	192.7K	5.62M	135.61K	+23,753.55%
Mar 31, 2024	D. E. SHAW & CO., INC.	0.32%	193.8K	5.65M	193.8K	+10,000.00%
Mar 31, 2024	PEAK6 INVESTMENTS LLC	0.32%	195.9K	5.71M	170.6K	+67,430.83%
Mar 31, 2024	OSTERWEIS CAPITAL MANAGEMENT INC	0.4%	243.19K	7.09M	-119.95K	-3,303.17%
Mar 31, 2024	RAYMOND JAMES FINANCIAL SERVICES ADVISORS, INC.	0.4%	245.48K	7.15M	207.4K	+54,456.87%
Mar 31, 2024		0.42%	255.61K	7.41M	255.61K	+10,000.00%
Mar 31, 2024	CITADEL ADVISORS LLC	0.46%	279.82K	8.15M	181.83K	+18,555.20%
Mar 31, 2024	RUSSELL INVESTMENTS GROUP, LTD.	0.49%	300.64K	8.76M	12.59K	+437.19%
Mar 31, 2024	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.62%	378.98K	11.04M	2.35K	+62.50%
Mar 31, 2024	POINT72 HONG KONG LTD	0.64%	392.02K	11.42M	-104.47K	-2,104.19%
Mar 31, 2024	YONG RONG (HK) ASSET MANAGEMENT LTD	0.66%	402.77K	11.74M	52.77K	+1,507.71%
Mar 31, 2024	UBS GROUP AG	0.68%	410.91K	11.97M	-149.34K	-2,665.63%
Mar 31, 2024	GOLDMAN SACHS GROUP INC	1.02%	623.06K	18.16M	-69.93K	-1,009.16%
Mar 31, 2024	STEAMBOAT CAPITAL PARTNERS, LLC	1.15%	700K	20.4M	700K	+10,000.00%
Mar 31, 2024	JPMORGAN CHASE & CO	1.85%	1.12M	32.77M	346.59K	+4,454.17%
Mar 31, 2024	INVESCO LTD.	2.08%	1.27M	36.89M	1.16M	+115,038.91%
Dec 31, 2023	AMERIPRISE FINANCIAL INC	0.34%	206.63K	4.15M	150.43K	+26,767.62%
Dec 31, 2023	VANGUARD GROUP INC	6.74%	4.06M	79.28M	-25.44K	-62.30%
Dec 31, 2023	BLACKROCK INC.	6.19%	3.73M	72.8M	268.92K	+777.98%
Dec 31, 2023	ARIOSE CAPITAL MANAGEMENT LTD	3.29%	1.98M	38.7M	1.23M	+16,379.68%
Dec 31, 2023	BANK OF AMERICA CORP /DE/	3.25%	1.96M	38.21M	-124.54K	-598.69%
Dec 31, 2023	CITIGROUP INC	2.88%	1.74M	33.93M	-29.03K	-164.40%
Dec 31, 2023	PERTENTO PARTNERS LLP	1.8%	1.09M	21.2M	-110.43K	-923.75%
Dec 31, 2023	PANVIEW ASIAN EQUITY MASTER FUND	1.76%	1.06M	20.67M	767.75K	+26,474.24%
Dec 31, 2023	STATE STREET CORP	1.73%	1.04M	20.41M	60.43K	+613.98%
Dec 31, 2023	GEODE CAPITAL MANAGEMENT, LLC	1.73%	1.04M	20.32M	54.31K	+551.10%
Dec 31, 2023	PORTOLAN CAPITAL MANAGEMENT, LLC	1.33%	799.5K	15.62M	799.5K	+10,000.00%
Dec 31, 2023	JPMORGAN CHASE & CO	1.29%	778.12K	15.2M	-295.08K	-2,749.56%
Dec 31, 2023	GOLDMAN SACHS GROUP INC	1.15%	692.99K	13.54M	-9.92K	-141.13%
Dec 31, 2023	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC	1.15%	690.86K	13.5M	-55.24K	-740.44%
Dec 31, 2023	VOLORIDGE INVESTMENT MANAGEMENT, LLC	1.1%	665.21K	13M	-17.27K	-253.03%
Dec 31, 2023	INVESCO LTD.	0.17%	101.25K	1.98M	33K	+4,835.46%
Dec 31, 2023	MORGAN STANLEY	0.98%	588.34K	11.5M	-2.75K	-46.46%
Dec 31, 2023	UBS GROUP AG	0.93%	560.25K	10.95M	34.93K	+664.89%
Dec 31, 2023	YIHENG CAPITAL MANAGEMENT, L.P.	0.85%	512.7K	10.02M	0	0
Dec 31, 2023	POINT72 HONG KONG LTD	0.82%	496.49K	9.7M	70.23K	+1,647.49%
Dec 31, 2023	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.79%	473.18K	9.25M	186.75K	+6,520.19%
Dec 31, 2023	NORTHERN TRUST CORP	0.78%	467.55K	9.14M	-9.34K	-195.75%
Dec 31, 2023	PRELUDE CAPITAL MANAGEMENT, LLC	0.73%	442.19K	8.64M	442.19K	+10,000.00%
Dec 31, 2023	THINK INVESTMENTS LP	0.69%	417.5K	8.16M	417.5K	+10,000.00%
Dec 31, 2023	OBERWEIS ASSET MANAGEMENT INC/	0.65%	393.4K	7.69M	51.6K	+1,509.65%
Dec 31, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.63%	376.63K	7.36M	19.95K	+559.21%
Dec 31, 2023	OSTERWEIS CAPITAL MANAGEMENT INC	0.6%	363.14K	7.1M	-199.85K	-3,549.82%
Dec 31, 2023	YONG RONG (HK) ASSET MANAGEMENT LTD	0.58%	350K	6.84M	200K	+13,333.33%
Dec 31, 2023	TRIATOMIC MANAGEMENT LP	0.56%	337.1K	6.59M	190.4K	+12,978.87%
Dec 31, 2023	NORGES BANK	0.48%	290K	5.67M	290K	+10,000.00%
Dec 31, 2023	RUSSELL INVESTMENTS GROUP, LTD.	0.48%	288.04K	5.63M	83.49K	+4,081.26%
Dec 31, 2023	BOOTHBAY FUND MANAGEMENT, LLC	0.39%	235.7K	4.61M	235.7K	+10,000.00%
Dec 31, 2023	BANK OF NEW YORK MELLON CORP	0.39%	233.72K	4.57M	43.52K	+2,287.95%
Dec 31, 2023	AQR CAPITAL MANAGEMENT LLC	0.33%	197.59K	3.86M	-90.1K	-3,131.72%
Dec 31, 2023	DEUTSCHE BANK AG\	0.3%	180.54K	3.53M	155.87K	+63,175.66%
Dec 31, 2023	HUSSMAN STRATEGIC ADVISORS, INC.	0.26%	157K	3.07M	157K	+10,000.00%
Dec 31, 2023	SQUAREPOINT OPS LLC	0.26%	154.95K	3.03M	47.46K	+4,415.37%
Dec 31, 2023	MITSUBISHI UFJ TRUST & BANKING CORP	0.25%	151.15K	2.95M	-14.85K	-894.71%
Dec 31, 2023	BARCLAYS PLC	0.24%	144.45K	2.82M	59.99K	+7,101.79%
Dec 31, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.24%	143.89K	2.81M	-184.19K	-5,614.15%
Dec 31, 2023	QUAERO CAPITAL S.A.	0.22%	130.51K	2.55M	59.75K	+8,443.30%
Dec 31, 2023	FIRST TRUST ADVISORS LP	0.21%	128.31K	2.51M	4.37K	+352.42%
Dec 31, 2023	JANUS HENDERSON GROUP PLC	0.2%	119.81K	2.34M	36K	+4,296.32%
Dec 31, 2023	DARK FOREST CAPITAL MANAGEMENT LP	0.18%	107.18K	2.09M	4.69K	+457.51%
Dec 31, 2023	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	0.18%	106K	2.07M	0	0
Dec 31, 2023	CITADEL ADVISORS LLC	0.15%	91.8K	1.79M	26.6K	+4,079.75%
Dec 31, 2023	NATIXIS	0.16%	95.3K	1.86M	95.3K	+10,000.00%
Dec 31, 2023	SWISS NATIONAL BANK	0.14%	86.8K	1.7M	-9.6K	-995.85%
Sep 30, 2023	BLACKROCK INC.	5.77%	3.46M	-	27.16K	+79.18%
Sep 30, 2023	LOS ANGELES CAPITAL MANAGEMENT LLC	0.11%	66.03K	-	-92.03K	-5,822.62%
Sep 30, 2023	CLARIVEST ASSET MANAGEMENT LLC	0.11%	66.2K	-	66.2K	+10,000.00%
Sep 30, 2023	INVESCO LTD.	0.11%	68.25K	-	-26	-3.81%
Sep 30, 2023	QUAERO CAPITAL S.A.	0.12%	70.77K	-	70.77K	+10,000.00%
Sep 30, 2023	JACKSON CREEK INVESTMENT ADVISORS LLC	0.12%	73.59K	-	73.59K	+10,000.00%
Sep 30, 2023	RHUMBLINE ADVISERS	0.12%	74.38K	-	-155	-20.80%
Sep 30, 2023	NATIONAL BANK OF CANADA /FI/	0.13%	75.33K	-	75.33K	+10,000.00%
Sep 30, 2023	DRIEHAUS CAPITAL MANAGEMENT LLC	0.13%	76.71K	-	76.71K	+10,000.00%
Sep 30, 2023	PDT PARTNERS, LLC	0.13%	78.96K	-	0	0
Sep 30, 2023	RICE HALL JAMES & ASSOCIATES, LLC	0.14%	84.17K	-	84.17K	+10,000.00%
Sep 30, 2023	BARCLAYS PLC	0.14%	84.47K	-	-1.48K	-172.43%
Sep 30, 2023	BNP PARIBAS ARBITRAGE, SNC	0.14%	86.4K	-	64.27K	+29,043.75%
Sep 30, 2023	SWISS NATIONAL BANK	0.16%	96.4K	-	-4.7K	-464.89%
Sep 30, 2023	DARK FOREST CAPITAL MANAGEMENT LP	0.17%	102.49K	-	88.07K	+61,098.86%
Sep 30, 2023	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	0.18%	106K	-	0	0
Sep 30, 2023	ALGERT GLOBAL LLC	0.2%	117.1K	-	-256.2K	-6,863.13%
Sep 30, 2023	FIRST TRUST ADVISORS LP	0.21%	123.94K	-	123.94K	+10,000.00%
Sep 30, 2023	CUBIST SYSTEMATIC STRATEGIES, LLC	0.21%	125.97K	-	125.97K	+10,000.00%
Sep 30, 2023	TRIATOMIC MANAGEMENT LP	0.24%	146.7K	-	146.7K	+10,000.00%
Sep 30, 2023	EAM INVESTORS, LLC	0.25%	147.19K	-	147.19K	+10,000.00%
Sep 30, 2023	YONG RONG (HK) ASSET MANAGEMENT LTD	0.25%	150K	-	150K	+10,000.00%
Sep 30, 2023	D. E. SHAW & CO., INC.	0.26%	158.32K	-	-77.55K	-3,287.87%
Sep 30, 2023	ACADIAN ASSET MANAGEMENT LLC	0.27%	163.1K	-	-27.09K	-1,424.16%
Sep 30, 2023	MITSUBISHI UFJ TRUST & BANKING CORP	0.28%	166K	-	-46.27K	-2,179.87%
Sep 30, 2023	PENSERRA CAPITAL MANAGEMENT LLC	0.3%	179.73K	-	179.73K	+10,000.00%
Sep 30, 2023	BANK OF NEW YORK MELLON CORP	0.32%	190.21K	-	29.36K	+1,825.36%
Sep 30, 2023	PACIFIC RIDGE CAPITAL PARTNERS, LLC	0.33%	196.98K	-	74.49K	+6,081.91%
Sep 30, 2023	EAM GLOBAL INVESTORS LLC	0.33%	197.84K	-	197.84K	+10,000.00%
Sep 30, 2023	RUSSELL INVESTMENTS GROUP, LTD.	0.34%	204.56K	-	189.86K	+129,192.30%
Sep 30, 2023	FULLER & THALER ASSET MANAGEMENT, INC.	0.36%	218.2K	-	-9.16K	-402.89%
Sep 30, 2023	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.48%	286.42K	-	262.24K	+108,410.85%
Sep 30, 2023	PANVIEW ASIAN EQUITY MASTER FUND	0.48%	290K	-	290K	+10,000.00%
Sep 30, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.55%	328.08K	-	110.59K	+5,085.04%
Sep 30, 2023	OBERWEIS ASSET MANAGEMENT INC/	0.57%	341.8K	-	56.2K	+1,967.79%
Sep 30, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.6%	356.68K	-	30.42K	+932.51%
Sep 30, 2023	CREDIT SUISSE AG/	0.71%	423.02K	-	355.78K	+52,909.79%
Sep 30, 2023	POINT72 HONG KONG LTD	0.71%	426.27K	-	65K	+1,799.19%
Sep 30, 2023	NORTHERN TRUST CORP	0.8%	476.88K	-	9.61K	+205.60%
Sep 30, 2023	YIHENG CAPITAL MANAGEMENT, L.P.	0.86%	512.7K	-	0	0
Sep 30, 2023	UBS GROUP AG	0.88%	525.32K	-	19.87K	+393.13%
Sep 30, 2023	OASIS MANAGEMENT CO LTD.	0.98%	587.41K	-	-245.92K	-2,951.09%
Sep 30, 2023	MORGAN STANLEY	0.99%	591.09K	-	364.43K	+16,078.32%
Sep 30, 2023	VOLORIDGE INVESTMENT MANAGEMENT, LLC	1.14%	682.48K	-	508.12K	+29,141.05%
Sep 30, 2023	GOLDMAN SACHS GROUP INC	1.17%	702.91K	-	25.1K	+370.26%
Sep 30, 2023	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC	1.25%	746.1K	-	-25.08K	-325.17%
Sep 30, 2023	ARIOSE CAPITAL MANAGEMENT LTD	1.25%	750.83K	-	69.61K	+1,021.82%
Sep 30, 2023	GEODE CAPITAL MANAGEMENT, LLC	1.65%	985.47K	-	66.44K	+722.89%
Sep 30, 2023	PERTENTO PARTNERS LLP	2%	1.2M	-	39.21K	+339.09%
Sep 30, 2023	CITIGROUP INC	2.95%	1.77M	-	-13.01K	-73.14%

ACMR Insiders

Among the ACMR insiders holding of 15.32% of the stake in company, SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD., Possible member of 10% group, holds the largest shares of 2.34M. XING XIAO, director, is the second largest ACMR insider with ownership of 2.34M shares. DUN HAIPING, director, stands third with possession of 764.61K shares of that stake.

Insiders	Designation	Shares Held
SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	Possible member of 10% group	2.34M
XING XIAO	director	2.34M
DUN HAIPING	director	764.61K
WANG DAVID H	See Remarks	598.01K
WANG JIAN	See remarks	253.16K
ABELMAN DAVID	EVP,Chief Mktg & Merch Officer	113.85K
LIU TRACY	director	110.77K
STERN DAVID ROSS	Executive Vice President & CFO	109.22K
CHEAV SOTHEARA	See remarks	100K
FENG LISA	See remarks	50K
JOYCE MICHAEL	director	42.24K
HU CHENMING	director	21.1K
CORADINO JOSEPH F	director	7.29K
MCKECHNIE MARK	See Remarks	900
GERSTEL JEFFREY C	EVP, Store Operations	0
CHEN FUPING	See remarks	0
GLENHILL ADVISORS LLC	10 percent owner	0

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 10, 2025	DUN HAIPING	SALE	26.54	15K	398.13K	764.61K
Feb 06, 2025	CHEAV SOTHEARA	SALE	23.00	22.6K	519.75K	100K
Feb 06, 2025	MCKECHNIE MARK	SALE	22.00	15K	330K	900
Nov 29, 2024	WANG DAVID H	SALE	17.44	56.25K	981K	598.01K
Nov 29, 2024	DUN HAIPING	SALE	17.43	19.06K	332.18K	755.09K
Nov 26, 2024	WANG DAVID H	SALE	18.31	9.48K	173.65K	654.26K
Nov 22, 2024	WANG DAVID H	SALE	19.08	56.25K	1.07M	710.51K
Nov 22, 2024	DUN HAIPING	SALE	19.12	15K	286.8K	774.15K
Oct 08, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	21.13	90.4K	1.91M	2.34M
Oct 08, 2024	XING XIAO	SALE	21.13	90.4K	1.91M	2.34M
Oct 07, 2024	XING XIAO	SALE	26.01	977	25.41K	2.43M
Oct 07, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	25.36	100.51K	2.55M	2.6M
Oct 04, 2024	XING XIAO	SALE	21.79	119.13K	2.6M	2.7M
Oct 04, 2024	MCKECHNIE MARK	SALE	22.00	16.52K	363.35K	900
Oct 04, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	20.94	129.27K	2.71M	2.7M
Oct 02, 2024	XING XIAO	SALE	20.01	26.3K	526.26K	3.4M
Oct 02, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	20.01	26.3K	526.26K	3.4M
Oct 01, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	20.19	8.3K	167.66K	3.43M
Oct 01, 2024	XING XIAO	SALE	20.19	8.3K	167.66K	3.43M
Aug 29, 2024	DUN HAIPING	SALE	18.08	19.1K	345.27K	755.09K
Aug 22, 2024	DUN HAIPING	SALE	19.85	15K	297.75K	774.19K
Jun 11, 2024	WANG JIAN	SALE	23.68	1.68K	39.78K	253.16K
Jun 10, 2024	WANG JIAN	SALE	22.07	30K	662.1K	253.16K
Jun 07, 2024	WANG JIAN	SALE	22.07	30K	662.1K	253.16K
Jun 06, 2024	WANG JIAN	SALE	22.92	30K	687.6K	253.16K
Jun 06, 2024	MCKECHNIE MARK	SALE	22.92	5.98K	137.15K	900
May 29, 2024	WANG DAVID H	SALE	22.62	41.09K	929.46K	504.02K
May 29, 2024	DUN HAIPING	SALE	22.63	19.24K	435.38K	855.09K
May 22, 2024	WANG DAVID H	SALE	22.81	45K	1.03M	590.11K
May 22, 2024	DUN HAIPING	SALE	22.88	15K	343.2K	874.33K
Mar 14, 2024	WANG DAVID H	SALE	28.38	10.61K	301.14K	504.02K
Mar 14, 2024	CHEAV SOTHEARA	SALE	28.32	2.38K	67.49K	100K
Mar 14, 2024	DUN HAIPING	SALE	28.34	3.56K	100.81K	855.09K
Mar 13, 2024	CHEAV SOTHEARA	SALE	29.09	5K	145.45K	105K
Mar 08, 2024	DUN HAIPING	SALE	30.36	15K	455.4K	874.52K
Mar 08, 2024	WANG DAVID H	SALE	30.35	45K	1.37M	591.11K
Feb 28, 2024	FENG LISA	SALE	25.20	7.5K	189K	50K
Feb 28, 2024	LIU TRACY	SALE	25.20	12.5K	315K	110.77K
Jan 12, 2024	MCKECHNIE MARK	SALE	22.00	10K	220K	900
Dec 26, 2023	LIU TRACY	SALE	20.00	10K	200K	110.77K
Dec 26, 2023	FENG LISA	SALE	20.00	7.5K	150K	50K
Nov 29, 2023	WANG DAVID H	SALE	17.13	39.78K	681.36K	504.02K
Nov 29, 2023	DUN HAIPING	SALE	17.25	18.98K	327.47K	855.09K
Nov 22, 2023	DUN HAIPING	SALE	17.66	15K	264.9K	874.07K
Nov 22, 2023	WANG DAVID H	SALE	17.68	45K	795.6K	588.79K
Nov 20, 2023	LIU TRACY	SALE	17.91	15K	268.65K	36.92K
Nov 13, 2023	CHEAV SOTHEARA	SALE	16.79	26K	436.54K	110K
Oct 11, 2023	MCKECHNIE MARK	SALE	20.00	11.25K	225K	900
Sep 13, 2023	WANG DAVID H	SALE	17.68	85.12K	1.5M	504.02K
Sep 12, 2023	WANG DAVID H	SALE	18.72	3.57K	66.89K	589.13K
Sep 01, 2023	MCKECHNIE MARK	SALE	18.00	30K	540K	900
Aug 23, 2023	CHEN FUPING	SALE	15.00	105K	1.58M	0
Aug 22, 2023	DUN HAIPING	SALE	13.85	32.1K	444.56K	855.09K
Jul 03, 2023	FENG LISA	SALE	15.00	22.5K	337.5K	50K
Jun 06, 2023	CHEAV SOTHEARA	SALE	10.00	39K	390K	110K
Jun 01, 2023	DUN HAIPING	SALE	10.00	37.5K	375K	887.19K
Mar 16, 2023	DUN HAIPING	SALE	12.06	37.5K	452.25K	889.12K
Mar 09, 2023	FENG LISA	SALE	12.55	1.11K	13.93K	50K
Nov 30, 2022	DUN HAIPING	SALE	8.43	35.33K	297.81K	890.62K
Aug 22, 2022	DUN HAIPING	SALE	16.10	36.54K	588.25K	855.09K
Aug 15, 2022	DUN HAIPING	SALE	19.28	36.52K	704.09K	891.63K
May 27, 2022	DUN HAIPING	SALE	15.00	36.15K	542.25K	855.09K
Mar 10, 2022	MCKECHNIE MARK	SALE	69.07	378	26.11K	300
Mar 09, 2022	DUN HAIPING	SALE	82.66	3K	247.98K	297.3K
Nov 18, 2021	MCKECHNIE MARK	SALE	100.60	166	16.7K	0
Aug 19, 2021	MCKECHNIE MARK	SALE	83.89	200	16.78K	0
Mar 12, 2021	MCKECHNIE MARK	SALE	87.89	10.03K	881.36K	0
Feb 12, 2021	HU CHENMING	SALE	120.00	10K	1.2M	21.1K
Dec 30, 2020	WANG JIAN	SALE	78.00	32.49K	2.53M	84.39K
Nov 19, 2020	MCKECHNIE MARK	SALE	74.45	7.5K	558.38K	0
Aug 27, 2020	MCKECHNIE MARK	SALE	93.18	4.59K	427.23K	0
Aug 03, 2020	HU CHENMING	SALE	100.00	7.81K	780.6K	0
Jul 13, 2020	HU CHENMING	SALE	84.15	14K	1.18M	7.81K
Jun 15, 2020	MCKECHNIE MARK	SALE	54.34	5.42K	294.25K	0
Jun 03, 2020	HU CHENMING	SALE	65.12	8.19K	533.59K	21.81K
Oct 07, 2011	GLENHILL ADVISORS LLC	SALE	0.00	309.88K	-	0
Oct 06, 2011	GLENHILL ADVISORS LLC	SALE	0.00	254.02K	-	309.88K
Oct 05, 2011	GLENHILL ADVISORS LLC	SALE	1.51	1.28M	1.93M	2.73M
Oct 04, 2011	GLENHILL ADVISORS LLC	SALE	1.55	1M	1.55M	4M
Feb 15, 2011	GLENHILL ADVISORS LLC	SALE	2.90	34.05K	98.68K	5M
May 28, 2010	JOYCE MICHAEL	PURCHASE	2.82	5K	14.1K	42.24K
May 26, 2010	ABELMAN DAVID	PURCHASE	2.60	5K	13K	113.85K
May 24, 2010	STERN DAVID ROSS	PURCHASE	2.79	5.37K	14.99K	109.22K
Jun 12, 2009	ABELMAN DAVID	PURCHASE	4.28	5K	21.38K	40K
Nov 20, 2008	JOYCE MICHAEL	PURCHASE	0.79	10K	7.9K	23.31K
May 30, 2008	CORADINO JOSEPH F	PURCHASE	6.99	5K	34.95K	7.29K
May 15, 2008	JOYCE MICHAEL	PURCHASE	7.02	2.1K	14.74K	4.39K
Nov 17, 2006	GERSTEL JEFFREY C	SALE	22.30	2K	44.6K	0

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE00

SALES825.04K19

NET SHARES-825.04K19

NO. OF SHARES HELD33.14M19

% NET SHARES-102.49%0%

Frequently Asked Questions

ACMR Stock Outstanding Shares

ShortableYes

OptionableYes

Short Percent Of Outstanding Shares6.26

Short Percent Of Float8.41

Shares Outstanding58.11M

Shares Float51.34M

Shares Short3.95M

Short Ratio1.99

8.41%

Short % of Float

6.26%

Short % of Shares Outstanding

Market Insider ACMR

Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.

Major Holders Summary

15.32% Percentage of Shares held by All Insiders

69.1% Percentage of Shares held by All Institutions

81.6% Percentage of Float held by Institutions

261

Number of Institutions Holding Shares

Institutional Ownership

Date	Holder	% Stake	Shares Held	Total Value ($)	Shares	% Change in Portfolio
Mar 31, 2024	BLACKROCK INC.	6.52%	3.96M	115.44M	235.94K	+633.30%
Mar 31, 2024	VANGUARD GROUP INC	6.55%	3.98M	116.08M	-73.73K	-181.72%
Mar 31, 2024	POINT72 ASSET MANAGEMENT, L.P.	0.24%	145.5K	4.24M	112.97K	+34,730.69%
Mar 31, 2024	RENAISSANCE TECHNOLOGIES LLC	0.24%	145.8K	4.25M	145.8K	+10,000.00%
Mar 31, 2024	CUBIST SYSTEMATIC STRATEGIES, LLC	0.25%	153.91K	4.48M	153.91K	+10,000.00%
Mar 31, 2024	FRANKLIN RESOURCES INC	0.26%	155.59K	4.53M	133.72K	+61,160.35%
Mar 31, 2024	HUSSMAN STRATEGIC ADVISORS, INC.	0.26%	157.5K	4.59M	500	+31.85%
Mar 31, 2024	WESTEND CAPITAL MANAGEMENT, LLC	0.27%	164.79K	4.8M	164.79K	+10,000.00%
Mar 31, 2024	STATE OF WISCONSIN INVESTMENT BOARD	0.23%	137.59K	4.01M	137.59K	+10,000.00%
Mar 31, 2024	BANK OF NEW YORK MELLON CORP	0.36%	217.03K	6.32M	-16.69K	-714.22%
Mar 31, 2024	MILLENNIUM MANAGEMENT LLC	0.4%	240.74K	7.02M	181.53K	+30,657.12%
Mar 31, 2024	M&G PLC	0.42%	255.61K	7.41M	255.61K	+10,000.00%
Mar 31, 2024	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0.41%	249.94K	7.28M	146.75K	+14,221.09%
Mar 31, 2024	AMERIPRISE FINANCIAL INC	0.51%	307.62K	8.97M	100.99K	+4,887.19%
Mar 31, 2024	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC	0.6%	364.34K	10.62M	-326.51K	-4,726.20%
Mar 31, 2024	TRIATOMIC MANAGEMENT LP	0.08%	50K	1.46M	-287.1K	-8,516.76%
Mar 31, 2024	PANVIEW ASIAN EQUITY MASTER FUND	0.6%	367.75K	10.72M	-690K	-6,523.26%
Mar 31, 2024	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.62%	374.07K	10.9M	-99.11K	-2,094.54%
Mar 31, 2024	TWO SIGMA INVESTMENTS, LP	0.72%	438.57K	12.78M	355.27K	+42,648.86%
Mar 31, 2024	OBERWEIS ASSET MANAGEMENT INC/	0.73%	441.13K	12.85M	47.73K	+1,213.27%
Mar 31, 2024	NORTHERN TRUST CORP	0.76%	462.77K	13.49M	-4.77K	-102.11%
Mar 31, 2024	YIHENG CAPITAL MANAGEMENT, L.P.	0.79%	481.29K	14.02M	-31.41K	-612.62%
Mar 31, 2024	PORTOLAN CAPITAL MANAGEMENT, LLC	0.89%	538.43K	15.69M	-261.07K	-3,265.41%
Mar 31, 2024	CITIGROUP INC	0.98%	594.27K	17.32M	-1.14M	-6,577.94%
Mar 31, 2024	PERTENTO PARTNERS LLP	1.31%	795.3K	23.17M	-289.74K	-2,670.32%
Mar 31, 2024	BANK OF AMERICA CORP /DE/	1.33%	810.74K	23.63M	-1.14M	-5,854.28%
Mar 31, 2024	VOLORIDGE INVESTMENT MANAGEMENT, LLC	1.38%	841.1K	24.51M	175.88K	+2,643.98%
Mar 31, 2024	FULLER & THALER ASSET MANAGEMENT, INC.	1.43%	869.65K	25.34M	869.65K	+10,000.00%
Mar 31, 2024	NUVEEN ASSET MANAGEMENT, LLC	1.44%	873.88K	25.46M	729.99K	+50,731.94%
Mar 31, 2024	MORGAN STANLEY	1.58%	961.65K	28.02M	373.31K	+6,345.09%
Mar 31, 2024	STATE STREET CORP	1.75%	1.07M	31.04M	20.58K	+197.04%
Mar 31, 2024	NILSINE PARTNERS, LLC	0.22%	132.99K	3.88M	132.99K	+10,000.00%
Mar 31, 2024	FIRST TRUST ADVISORS LP	0.22%	132.31K	3.86M	4K	+311.82%
Mar 31, 2024	CLARIVEST ASSET MANAGEMENT LLC	0.21%	129.95K	3.79M	62.12K	+9,157.06%
Mar 31, 2024	QUBE RESEARCH & TECHNOLOGIES LTD	0.18%	107.34K	3.13M	107.34K	+10,000.00%
Mar 31, 2024	AMERICAN CENTURY COMPANIES INC	0.16%	96.87K	2.82M	24.69K	+3,420.84%
Mar 31, 2024	MITSUBISHI UFJ TRUST & BANKING CORP	0.15%	91.69K	2.78M	-59.46K	-3,933.94%
Mar 31, 2024	SWISS NATIONAL BANK	0.14%	87.8K	2.56M	1K	+115.21%
Mar 31, 2024	OSSIAM	0.14%	85.4K	2.49M	85.4K	+10,000.00%
Mar 31, 2024	RHUMBLINE ADVISERS	0.13%	77.26K	2.25M	2.08K	+276.65%
Mar 31, 2024	ARLINGTON CAPITAL MANAGEMENT, INC.	0.13%	77.1K	2.25M	8.88K	+1,301.30%
Mar 31, 2024	CALAMOS ADVISORS LLC	0.12%	72.16K	2.1M	-7.97K	-994.58%
Mar 31, 2024	RICE HALL JAMES & ASSOCIATES, LLC	0.11%	67.76K	1.97M	-12.76K	-1,584.70%
Mar 31, 2024	PRINCIPAL FINANCIAL GROUP INC	0.1%	63.23K	1.84M	63.23K	+10,000.00%
Mar 31, 2024	BNP PARIBAS ARBITRAGE, SNC	0.1%	60.53K	1.76M	41.99K	+22,645.35%
Mar 31, 2024	WELLS FARGO & COMPANY/MN	0.09%	56.76K	1.65M	4.23K	+805.00%
Mar 31, 2024	LPL FINANCIAL LLC	0.09%	54.35K	1.58M	22.45K	+7,035.61%
Mar 31, 2024	JACKSON CREEK INVESTMENT ADVISORS LLC	0.09%	52.81K	1.54M	-90	-17.01%
Mar 31, 2024	GEODE CAPITAL MANAGEMENT, LLC	1.77%	1.08M	31.42M	38.29K	+368.24%
Mar 31, 2024	ALLIANCEBERNSTEIN L.P.	0.08%	48.54K	1.41M	0	0
Mar 31, 2024	DEUTSCHE BANK AG\	0.29%	179.29K	5.22M	-1.25K	-69.40%
Mar 31, 2024	JANE STREET GROUP, LLC	0.32%	192.7K	5.62M	135.61K	+23,753.55%
Mar 31, 2024	D. E. SHAW & CO., INC.	0.32%	193.8K	5.65M	193.8K	+10,000.00%
Mar 31, 2024	PEAK6 INVESTMENTS LLC	0.32%	195.9K	5.71M	170.6K	+67,430.83%
Mar 31, 2024	OSTERWEIS CAPITAL MANAGEMENT INC	0.4%	243.19K	7.09M	-119.95K	-3,303.17%
Mar 31, 2024	RAYMOND JAMES FINANCIAL SERVICES ADVISORS, INC.	0.4%	245.48K	7.15M	207.4K	+54,456.87%
Mar 31, 2024		0.42%	255.61K	7.41M	255.61K	+10,000.00%
Mar 31, 2024	CITADEL ADVISORS LLC	0.46%	279.82K	8.15M	181.83K	+18,555.20%
Mar 31, 2024	RUSSELL INVESTMENTS GROUP, LTD.	0.49%	300.64K	8.76M	12.59K	+437.19%
Mar 31, 2024	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.62%	378.98K	11.04M	2.35K	+62.50%
Mar 31, 2024	POINT72 HONG KONG LTD	0.64%	392.02K	11.42M	-104.47K	-2,104.19%
Mar 31, 2024	YONG RONG (HK) ASSET MANAGEMENT LTD	0.66%	402.77K	11.74M	52.77K	+1,507.71%
Mar 31, 2024	UBS GROUP AG	0.68%	410.91K	11.97M	-149.34K	-2,665.63%
Mar 31, 2024	GOLDMAN SACHS GROUP INC	1.02%	623.06K	18.16M	-69.93K	-1,009.16%
Mar 31, 2024	STEAMBOAT CAPITAL PARTNERS, LLC	1.15%	700K	20.4M	700K	+10,000.00%
Mar 31, 2024	JPMORGAN CHASE & CO	1.85%	1.12M	32.77M	346.59K	+4,454.17%
Mar 31, 2024	INVESCO LTD.	2.08%	1.27M	36.89M	1.16M	+115,038.91%
Dec 31, 2023	AMERIPRISE FINANCIAL INC	0.34%	206.63K	4.15M	150.43K	+26,767.62%
Dec 31, 2023	VANGUARD GROUP INC	6.74%	4.06M	79.28M	-25.44K	-62.30%
Dec 31, 2023	BLACKROCK INC.	6.19%	3.73M	72.8M	268.92K	+777.98%
Dec 31, 2023	ARIOSE CAPITAL MANAGEMENT LTD	3.29%	1.98M	38.7M	1.23M	+16,379.68%
Dec 31, 2023	BANK OF AMERICA CORP /DE/	3.25%	1.96M	38.21M	-124.54K	-598.69%
Dec 31, 2023	CITIGROUP INC	2.88%	1.74M	33.93M	-29.03K	-164.40%
Dec 31, 2023	PERTENTO PARTNERS LLP	1.8%	1.09M	21.2M	-110.43K	-923.75%
Dec 31, 2023	PANVIEW ASIAN EQUITY MASTER FUND	1.76%	1.06M	20.67M	767.75K	+26,474.24%
Dec 31, 2023	STATE STREET CORP	1.73%	1.04M	20.41M	60.43K	+613.98%
Dec 31, 2023	GEODE CAPITAL MANAGEMENT, LLC	1.73%	1.04M	20.32M	54.31K	+551.10%
Dec 31, 2023	PORTOLAN CAPITAL MANAGEMENT, LLC	1.33%	799.5K	15.62M	799.5K	+10,000.00%
Dec 31, 2023	JPMORGAN CHASE & CO	1.29%	778.12K	15.2M	-295.08K	-2,749.56%
Dec 31, 2023	GOLDMAN SACHS GROUP INC	1.15%	692.99K	13.54M	-9.92K	-141.13%
Dec 31, 2023	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC	1.15%	690.86K	13.5M	-55.24K	-740.44%
Dec 31, 2023	VOLORIDGE INVESTMENT MANAGEMENT, LLC	1.1%	665.21K	13M	-17.27K	-253.03%
Dec 31, 2023	INVESCO LTD.	0.17%	101.25K	1.98M	33K	+4,835.46%
Dec 31, 2023	MORGAN STANLEY	0.98%	588.34K	11.5M	-2.75K	-46.46%
Dec 31, 2023	UBS GROUP AG	0.93%	560.25K	10.95M	34.93K	+664.89%
Dec 31, 2023	YIHENG CAPITAL MANAGEMENT, L.P.	0.85%	512.7K	10.02M	0	0
Dec 31, 2023	POINT72 HONG KONG LTD	0.82%	496.49K	9.7M	70.23K	+1,647.49%
Dec 31, 2023	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.79%	473.18K	9.25M	186.75K	+6,520.19%
Dec 31, 2023	NORTHERN TRUST CORP	0.78%	467.55K	9.14M	-9.34K	-195.75%
Dec 31, 2023	PRELUDE CAPITAL MANAGEMENT, LLC	0.73%	442.19K	8.64M	442.19K	+10,000.00%
Dec 31, 2023	THINK INVESTMENTS LP	0.69%	417.5K	8.16M	417.5K	+10,000.00%
Dec 31, 2023	OBERWEIS ASSET MANAGEMENT INC/	0.65%	393.4K	7.69M	51.6K	+1,509.65%
Dec 31, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.63%	376.63K	7.36M	19.95K	+559.21%
Dec 31, 2023	OSTERWEIS CAPITAL MANAGEMENT INC	0.6%	363.14K	7.1M	-199.85K	-3,549.82%
Dec 31, 2023	YONG RONG (HK) ASSET MANAGEMENT LTD	0.58%	350K	6.84M	200K	+13,333.33%
Dec 31, 2023	TRIATOMIC MANAGEMENT LP	0.56%	337.1K	6.59M	190.4K	+12,978.87%
Dec 31, 2023	NORGES BANK	0.48%	290K	5.67M	290K	+10,000.00%
Dec 31, 2023	RUSSELL INVESTMENTS GROUP, LTD.	0.48%	288.04K	5.63M	83.49K	+4,081.26%
Dec 31, 2023	BOOTHBAY FUND MANAGEMENT, LLC	0.39%	235.7K	4.61M	235.7K	+10,000.00%
Dec 31, 2023	BANK OF NEW YORK MELLON CORP	0.39%	233.72K	4.57M	43.52K	+2,287.95%
Dec 31, 2023	AQR CAPITAL MANAGEMENT LLC	0.33%	197.59K	3.86M	-90.1K	-3,131.72%
Dec 31, 2023	DEUTSCHE BANK AG\	0.3%	180.54K	3.53M	155.87K	+63,175.66%
Dec 31, 2023	HUSSMAN STRATEGIC ADVISORS, INC.	0.26%	157K	3.07M	157K	+10,000.00%
Dec 31, 2023	SQUAREPOINT OPS LLC	0.26%	154.95K	3.03M	47.46K	+4,415.37%
Dec 31, 2023	MITSUBISHI UFJ TRUST & BANKING CORP	0.25%	151.15K	2.95M	-14.85K	-894.71%
Dec 31, 2023	BARCLAYS PLC	0.24%	144.45K	2.82M	59.99K	+7,101.79%
Dec 31, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.24%	143.89K	2.81M	-184.19K	-5,614.15%
Dec 31, 2023	QUAERO CAPITAL S.A.	0.22%	130.51K	2.55M	59.75K	+8,443.30%
Dec 31, 2023	FIRST TRUST ADVISORS LP	0.21%	128.31K	2.51M	4.37K	+352.42%
Dec 31, 2023	JANUS HENDERSON GROUP PLC	0.2%	119.81K	2.34M	36K	+4,296.32%
Dec 31, 2023	DARK FOREST CAPITAL MANAGEMENT LP	0.18%	107.18K	2.09M	4.69K	+457.51%
Dec 31, 2023	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	0.18%	106K	2.07M	0	0
Dec 31, 2023	CITADEL ADVISORS LLC	0.15%	91.8K	1.79M	26.6K	+4,079.75%
Dec 31, 2023	NATIXIS	0.16%	95.3K	1.86M	95.3K	+10,000.00%
Dec 31, 2023	SWISS NATIONAL BANK	0.14%	86.8K	1.7M	-9.6K	-995.85%
Sep 30, 2023	BLACKROCK INC.	5.77%	3.46M	-	27.16K	+79.18%
Sep 30, 2023	LOS ANGELES CAPITAL MANAGEMENT LLC	0.11%	66.03K	-	-92.03K	-5,822.62%
Sep 30, 2023	CLARIVEST ASSET MANAGEMENT LLC	0.11%	66.2K	-	66.2K	+10,000.00%
Sep 30, 2023	INVESCO LTD.	0.11%	68.25K	-	-26	-3.81%
Sep 30, 2023	QUAERO CAPITAL S.A.	0.12%	70.77K	-	70.77K	+10,000.00%
Sep 30, 2023	JACKSON CREEK INVESTMENT ADVISORS LLC	0.12%	73.59K	-	73.59K	+10,000.00%
Sep 30, 2023	RHUMBLINE ADVISERS	0.12%	74.38K	-	-155	-20.80%
Sep 30, 2023	NATIONAL BANK OF CANADA /FI/	0.13%	75.33K	-	75.33K	+10,000.00%
Sep 30, 2023	DRIEHAUS CAPITAL MANAGEMENT LLC	0.13%	76.71K	-	76.71K	+10,000.00%
Sep 30, 2023	PDT PARTNERS, LLC	0.13%	78.96K	-	0	0
Sep 30, 2023	RICE HALL JAMES & ASSOCIATES, LLC	0.14%	84.17K	-	84.17K	+10,000.00%
Sep 30, 2023	BARCLAYS PLC	0.14%	84.47K	-	-1.48K	-172.43%
Sep 30, 2023	BNP PARIBAS ARBITRAGE, SNC	0.14%	86.4K	-	64.27K	+29,043.75%
Sep 30, 2023	SWISS NATIONAL BANK	0.16%	96.4K	-	-4.7K	-464.89%
Sep 30, 2023	DARK FOREST CAPITAL MANAGEMENT LP	0.17%	102.49K	-	88.07K	+61,098.86%
Sep 30, 2023	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	0.18%	106K	-	0	0
Sep 30, 2023	ALGERT GLOBAL LLC	0.2%	117.1K	-	-256.2K	-6,863.13%
Sep 30, 2023	FIRST TRUST ADVISORS LP	0.21%	123.94K	-	123.94K	+10,000.00%
Sep 30, 2023	CUBIST SYSTEMATIC STRATEGIES, LLC	0.21%	125.97K	-	125.97K	+10,000.00%
Sep 30, 2023	TRIATOMIC MANAGEMENT LP	0.24%	146.7K	-	146.7K	+10,000.00%
Sep 30, 2023	EAM INVESTORS, LLC	0.25%	147.19K	-	147.19K	+10,000.00%
Sep 30, 2023	YONG RONG (HK) ASSET MANAGEMENT LTD	0.25%	150K	-	150K	+10,000.00%
Sep 30, 2023	D. E. SHAW & CO., INC.	0.26%	158.32K	-	-77.55K	-3,287.87%
Sep 30, 2023	ACADIAN ASSET MANAGEMENT LLC	0.27%	163.1K	-	-27.09K	-1,424.16%
Sep 30, 2023	MITSUBISHI UFJ TRUST & BANKING CORP	0.28%	166K	-	-46.27K	-2,179.87%
Sep 30, 2023	PENSERRA CAPITAL MANAGEMENT LLC	0.3%	179.73K	-	179.73K	+10,000.00%
Sep 30, 2023	BANK OF NEW YORK MELLON CORP	0.32%	190.21K	-	29.36K	+1,825.36%
Sep 30, 2023	PACIFIC RIDGE CAPITAL PARTNERS, LLC	0.33%	196.98K	-	74.49K	+6,081.91%
Sep 30, 2023	EAM GLOBAL INVESTORS LLC	0.33%	197.84K	-	197.84K	+10,000.00%
Sep 30, 2023	RUSSELL INVESTMENTS GROUP, LTD.	0.34%	204.56K	-	189.86K	+129,192.30%
Sep 30, 2023	FULLER & THALER ASSET MANAGEMENT, INC.	0.36%	218.2K	-	-9.16K	-402.89%
Sep 30, 2023	ALLSPRING GLOBAL INVESTMENTS HOLDINGS, LLC	0.48%	286.42K	-	262.24K	+108,410.85%
Sep 30, 2023	PANVIEW ASIAN EQUITY MASTER FUND	0.48%	290K	-	290K	+10,000.00%
Sep 30, 2023	NUVEEN ASSET MANAGEMENT, LLC	0.55%	328.08K	-	110.59K	+5,085.04%
Sep 30, 2023	OBERWEIS ASSET MANAGEMENT INC/	0.57%	341.8K	-	56.2K	+1,967.79%
Sep 30, 2023	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0.6%	356.68K	-	30.42K	+932.51%
Sep 30, 2023	CREDIT SUISSE AG/	0.71%	423.02K	-	355.78K	+52,909.79%
Sep 30, 2023	POINT72 HONG KONG LTD	0.71%	426.27K	-	65K	+1,799.19%
Sep 30, 2023	NORTHERN TRUST CORP	0.8%	476.88K	-	9.61K	+205.60%
Sep 30, 2023	YIHENG CAPITAL MANAGEMENT, L.P.	0.86%	512.7K	-	0	0
Sep 30, 2023	UBS GROUP AG	0.88%	525.32K	-	19.87K	+393.13%
Sep 30, 2023	OASIS MANAGEMENT CO LTD.	0.98%	587.41K	-	-245.92K	-2,951.09%
Sep 30, 2023	MORGAN STANLEY	0.99%	591.09K	-	364.43K	+16,078.32%
Sep 30, 2023	VOLORIDGE INVESTMENT MANAGEMENT, LLC	1.14%	682.48K	-	508.12K	+29,141.05%
Sep 30, 2023	GOLDMAN SACHS GROUP INC	1.17%	702.91K	-	25.1K	+370.26%
Sep 30, 2023	MATTHEWS INTERNATIONAL CAPITAL MANAGEMENT LLC	1.25%	746.1K	-	-25.08K	-325.17%
Sep 30, 2023	ARIOSE CAPITAL MANAGEMENT LTD	1.25%	750.83K	-	69.61K	+1,021.82%
Sep 30, 2023	GEODE CAPITAL MANAGEMENT, LLC	1.65%	985.47K	-	66.44K	+722.89%
Sep 30, 2023	PERTENTO PARTNERS LLP	2%	1.2M	-	39.21K	+339.09%
Sep 30, 2023	CITIGROUP INC	2.95%	1.77M	-	-13.01K	-73.14%

ACMR Insiders

Insiders	Designation	Shares Held
SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	Possible member of 10% group	2.34M
XING XIAO	director	2.34M
DUN HAIPING	director	764.61K
WANG DAVID H	See Remarks	598.01K
WANG JIAN	See remarks	253.16K
ABELMAN DAVID	EVP,Chief Mktg & Merch Officer	113.85K
LIU TRACY	director	110.77K
STERN DAVID ROSS	Executive Vice President & CFO	109.22K
CHEAV SOTHEARA	See remarks	100K
FENG LISA	See remarks	50K
JOYCE MICHAEL	director	42.24K
HU CHENMING	director	21.1K
CORADINO JOSEPH F	director	7.29K
MCKECHNIE MARK	See Remarks	900
GERSTEL JEFFREY C	EVP, Store Operations	0
CHEN FUPING	See remarks	0
GLENHILL ADVISORS LLC	10 percent owner	0

Buying/Selling by Insiders

Date	Insider	Type	Cost	Shares	Value ($)	Shares Total
Mar 10, 2025	DUN HAIPING	SALE	26.54	15K	398.13K	764.61K
Feb 06, 2025	CHEAV SOTHEARA	SALE	23.00	22.6K	519.75K	100K
Feb 06, 2025	MCKECHNIE MARK	SALE	22.00	15K	330K	900
Nov 29, 2024	WANG DAVID H	SALE	17.44	56.25K	981K	598.01K
Nov 29, 2024	DUN HAIPING	SALE	17.43	19.06K	332.18K	755.09K
Nov 26, 2024	WANG DAVID H	SALE	18.31	9.48K	173.65K	654.26K
Nov 22, 2024	WANG DAVID H	SALE	19.08	56.25K	1.07M	710.51K
Nov 22, 2024	DUN HAIPING	SALE	19.12	15K	286.8K	774.15K
Oct 08, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	21.13	90.4K	1.91M	2.34M
Oct 08, 2024	XING XIAO	SALE	21.13	90.4K	1.91M	2.34M
Oct 07, 2024	XING XIAO	SALE	26.01	977	25.41K	2.43M
Oct 07, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	25.36	100.51K	2.55M	2.6M
Oct 04, 2024	XING XIAO	SALE	21.79	119.13K	2.6M	2.7M
Oct 04, 2024	MCKECHNIE MARK	SALE	22.00	16.52K	363.35K	900
Oct 04, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	20.94	129.27K	2.71M	2.7M
Oct 02, 2024	XING XIAO	SALE	20.01	26.3K	526.26K	3.4M
Oct 02, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	20.01	26.3K	526.26K	3.4M
Oct 01, 2024	SHANGHAI SCIENCE & TECHNOLOGY VENTURE CAPITAL (GROUP) CO., LTD.	SALE	20.19	8.3K	167.66K	3.43M
Oct 01, 2024	XING XIAO	SALE	20.19	8.3K	167.66K	3.43M
Aug 29, 2024	DUN HAIPING	SALE	18.08	19.1K	345.27K	755.09K
Aug 22, 2024	DUN HAIPING	SALE	19.85	15K	297.75K	774.19K
Jun 11, 2024	WANG JIAN	SALE	23.68	1.68K	39.78K	253.16K
Jun 10, 2024	WANG JIAN	SALE	22.07	30K	662.1K	253.16K
Jun 07, 2024	WANG JIAN	SALE	22.07	30K	662.1K	253.16K
Jun 06, 2024	WANG JIAN	SALE	22.92	30K	687.6K	253.16K
Jun 06, 2024	MCKECHNIE MARK	SALE	22.92	5.98K	137.15K	900
May 29, 2024	WANG DAVID H	SALE	22.62	41.09K	929.46K	504.02K
May 29, 2024	DUN HAIPING	SALE	22.63	19.24K	435.38K	855.09K
May 22, 2024	WANG DAVID H	SALE	22.81	45K	1.03M	590.11K
May 22, 2024	DUN HAIPING	SALE	22.88	15K	343.2K	874.33K
Mar 14, 2024	WANG DAVID H	SALE	28.38	10.61K	301.14K	504.02K
Mar 14, 2024	CHEAV SOTHEARA	SALE	28.32	2.38K	67.49K	100K
Mar 14, 2024	DUN HAIPING	SALE	28.34	3.56K	100.81K	855.09K
Mar 13, 2024	CHEAV SOTHEARA	SALE	29.09	5K	145.45K	105K
Mar 08, 2024	DUN HAIPING	SALE	30.36	15K	455.4K	874.52K
Mar 08, 2024	WANG DAVID H	SALE	30.35	45K	1.37M	591.11K
Feb 28, 2024	FENG LISA	SALE	25.20	7.5K	189K	50K
Feb 28, 2024	LIU TRACY	SALE	25.20	12.5K	315K	110.77K
Jan 12, 2024	MCKECHNIE MARK	SALE	22.00	10K	220K	900
Dec 26, 2023	LIU TRACY	SALE	20.00	10K	200K	110.77K
Dec 26, 2023	FENG LISA	SALE	20.00	7.5K	150K	50K
Nov 29, 2023	WANG DAVID H	SALE	17.13	39.78K	681.36K	504.02K
Nov 29, 2023	DUN HAIPING	SALE	17.25	18.98K	327.47K	855.09K
Nov 22, 2023	DUN HAIPING	SALE	17.66	15K	264.9K	874.07K
Nov 22, 2023	WANG DAVID H	SALE	17.68	45K	795.6K	588.79K
Nov 20, 2023	LIU TRACY	SALE	17.91	15K	268.65K	36.92K
Nov 13, 2023	CHEAV SOTHEARA	SALE	16.79	26K	436.54K	110K
Oct 11, 2023	MCKECHNIE MARK	SALE	20.00	11.25K	225K	900
Sep 13, 2023	WANG DAVID H	SALE	17.68	85.12K	1.5M	504.02K
Sep 12, 2023	WANG DAVID H	SALE	18.72	3.57K	66.89K	589.13K
Sep 01, 2023	MCKECHNIE MARK	SALE	18.00	30K	540K	900
Aug 23, 2023	CHEN FUPING	SALE	15.00	105K	1.58M	0
Aug 22, 2023	DUN HAIPING	SALE	13.85	32.1K	444.56K	855.09K
Jul 03, 2023	FENG LISA	SALE	15.00	22.5K	337.5K	50K
Jun 06, 2023	CHEAV SOTHEARA	SALE	10.00	39K	390K	110K
Jun 01, 2023	DUN HAIPING	SALE	10.00	37.5K	375K	887.19K
Mar 16, 2023	DUN HAIPING	SALE	12.06	37.5K	452.25K	889.12K
Mar 09, 2023	FENG LISA	SALE	12.55	1.11K	13.93K	50K
Nov 30, 2022	DUN HAIPING	SALE	8.43	35.33K	297.81K	890.62K
Aug 22, 2022	DUN HAIPING	SALE	16.10	36.54K	588.25K	855.09K
Aug 15, 2022	DUN HAIPING	SALE	19.28	36.52K	704.09K	891.63K
May 27, 2022	DUN HAIPING	SALE	15.00	36.15K	542.25K	855.09K
Mar 10, 2022	MCKECHNIE MARK	SALE	69.07	378	26.11K	300
Mar 09, 2022	DUN HAIPING	SALE	82.66	3K	247.98K	297.3K
Nov 18, 2021	MCKECHNIE MARK	SALE	100.60	166	16.7K	0
Aug 19, 2021	MCKECHNIE MARK	SALE	83.89	200	16.78K	0
Mar 12, 2021	MCKECHNIE MARK	SALE	87.89	10.03K	881.36K	0
Feb 12, 2021	HU CHENMING	SALE	120.00	10K	1.2M	21.1K
Dec 30, 2020	WANG JIAN	SALE	78.00	32.49K	2.53M	84.39K
Nov 19, 2020	MCKECHNIE MARK	SALE	74.45	7.5K	558.38K	0
Aug 27, 2020	MCKECHNIE MARK	SALE	93.18	4.59K	427.23K	0
Aug 03, 2020	HU CHENMING	SALE	100.00	7.81K	780.6K	0
Jul 13, 2020	HU CHENMING	SALE	84.15	14K	1.18M	7.81K
Jun 15, 2020	MCKECHNIE MARK	SALE	54.34	5.42K	294.25K	0
Jun 03, 2020	HU CHENMING	SALE	65.12	8.19K	533.59K	21.81K
Oct 07, 2011	GLENHILL ADVISORS LLC	SALE	0.00	309.88K	-	0
Oct 06, 2011	GLENHILL ADVISORS LLC	SALE	0.00	254.02K	-	309.88K
Oct 05, 2011	GLENHILL ADVISORS LLC	SALE	1.51	1.28M	1.93M	2.73M
Oct 04, 2011	GLENHILL ADVISORS LLC	SALE	1.55	1M	1.55M	4M
Feb 15, 2011	GLENHILL ADVISORS LLC	SALE	2.90	34.05K	98.68K	5M
May 28, 2010	JOYCE MICHAEL	PURCHASE	2.82	5K	14.1K	42.24K
May 26, 2010	ABELMAN DAVID	PURCHASE	2.60	5K	13K	113.85K
May 24, 2010	STERN DAVID ROSS	PURCHASE	2.79	5.37K	14.99K	109.22K
Jun 12, 2009	ABELMAN DAVID	PURCHASE	4.28	5K	21.38K	40K
Nov 20, 2008	JOYCE MICHAEL	PURCHASE	0.79	10K	7.9K	23.31K
May 30, 2008	CORADINO JOSEPH F	PURCHASE	6.99	5K	34.95K	7.29K
May 15, 2008	JOYCE MICHAEL	PURCHASE	7.02	2.1K	14.74K	4.39K
Nov 17, 2006	GERSTEL JEFFREY C	SALE	22.30	2K	44.6K	0

Insider Transaction Summary (6 Months)

SHARESTRANS

PURCHASE00

SALES825.04K19

NET SHARES-825.04K19

NO. OF SHARES HELD33.14M19

% NET SHARES-102.49%0%

ACMR Stock Ownership Breakdown

ACM Research, Inc.

ACMR Stock Outstanding Shares

Market Insider ACMR

Institutional Ownership

ACMR Insiders

Buying/Selling by Insiders

Insider Transaction Summary (6 Months)

Frequently Asked Questions

ACMR Stock Outstanding Shares

Market Insider ACMR

Institutional Ownership

ACMR Insiders

Buying/Selling by Insiders

Insider Transaction Summary (6 Months)

Frequently Asked Questions