What does CUSIP 00108J109 represent in this 13F holders report?

CUSIP 00108J109 is the security identifier for ACMR - ACM Research, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ACMR - ACM Research, Inc. - Common Stock in Q1 2018?

11 institutional investors reported ACMR - ACM Research, Inc. - Common Stock for Q1 2018. Use the holders table for investor-level position and value details.

ACM Research, Inc. - Common Stock (ACMR)

CUSIP: 00108J109

Q1 2018 13F Holders as of 31 Mar 2018

Security type / class: Equity / Common Stock
Total 13F shares: 849,051
Total 13F value: $10,442,000
Share change: -24,796
SEC-reported price per share: $12.30
Number of holders: 11
Value change: +$324,928
Number of buys: 6
Number of sells: 8
Shares outstanding: 64,126,478

Security key

00108J109

Report period

Q1 2018

Institutions

Top holders

ACMR full security history Ownership snapshot Full 13F holder table ACM Research, Inc. SEC filings ACM Research, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of ACMR - ACM Research, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

AMERIPRISE FINANCIAL INC

Disclosed value leader

AMERIPRISE FINANCIAL INC

Comparable rows

10/10

Latest evidence

31 Dec 2017

13F Lead comparable stake: 0.78% Showing 1-6 of 10 holder rows.

Quick read

AMERIPRISE FINANCIAL INC leads the comparable SEC ownership view at 0.78%.

10 of 10 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens AMERIPRISE FINANCIAL INC's linked filing trail.

Comparable ownership Top 5

AMERIPRISE FINANCIAL INC 0.78%

HERALD INVESTMENT MANAGEMENT Ltd 0.23%

GILDER GAGNON HOWE & CO LLC 0.15%

Polar Asset Management Partners Inc. 0.08%

K.J. Harrison & Partners Inc 0.05%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 10 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
AMERIPRISE FINANCIAL INC	13F Company 13F	0.78%	$2,620,000 499,162 shares	—	31 Dec 2017
HERALD INVESTMENT MANAGEMENT Ltd	13F Company 13F	0.23%	$772,000 150,000 shares	—	31 Dec 2017
GILDER GAGNON HOWE & CO LLC	13F Company 13F	0.15%	$515,000 98,033 shares	—	31 Dec 2017
Polar Asset Management Partners Inc.	13F Company 13F	0.08%	$269,000 51,262 shares	—	31 Dec 2017
K.J. Harrison & Partners Inc	13F Company 13F	0.05%	$184,000 35,000 shares	—	31 Dec 2017
Granite Point Capital Management, L.P.	13F Company 13F	0.04%	$131,000 25,000 shares	—	31 Dec 2017

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2018

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

849,051

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2018 vs Q1 2018 Across Filers

Q1 2018 holders

Holder diff

Investor	Q1 2018 Shares	Q1 2018 Shares	Share Diff	Share Chg %	Q1 2018 value	Q1 2018 value	Value change	Value Chg %