ACM Research, Inc.
US ˙ NasdaqGM ˙ US00108J1097

SecurityACMR / ACM Research, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership15,500 shares
Latest Disclosed Value $ 609,925
Strs Ohio reports 131.34% increase in ownership of ACMR / ACM Research, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 15,500 shares of ACM Research, Inc. (US:ACMR) valued at $609,925 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 6,700 shares of ACM Research, Inc.. This represents a change in shares of 131.34% during the quarter. The current value of the position is $1,182,495 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-24 2026-03-31 13F ACM RESEARCH COM_STK 00108J109 15,500 8,800 131.34 610 130.68 0.0024
2026-02-02 2025-12-31 13F ACM RESEARCH COM_STK 00108J109 6,700 0 0.00 264 0.76 0.0010
2025-10-30 2025-09-30 13F ACM RESEARCH INC- COM_STK 00108J109 6,700 0 0.00 262 51.45 0.0010
2025-08-04 2025-06-30 13F ACM RESEARCH INC- COM_STK 00108J109 6,700 1,000 17.54 174 30.08 0.0006
2025-05-28 2025-03-31 13F ACM RESEARCH INC- COM_STK 00108J109 5,700 2,200 62.86 133 155.77 0.0006
2025-05-28 2024-12-31 13F ACM RESEARCH INC- COM_STK 00108J109 3,500 2,800 400.00 53 271.43 0.0002
2024-11-01 2024-09-30 13F ACM RESEARCH INC- COM_STK 00108J109 700 0 0.00 14 -12.50 0.0001
2024-08-05 2024-06-30 13F ACM RESEARCH INC- COM_STK 00108J109 700 700 16 0.0001
2024-05-13 2024-03-31 13F ACM RESEARCH INC - COM 00108J109 0 -12,200 -100.00 0 0.0000
2024-01-30 2023-12-31 13F ACM RESEARCH INC - COM 00108J109 12,200 -9,700 -44.29 0 0.0010
2023-10-26 2023-09-30 13F/A-1 ACM RESEARCH INC - COM 00108J109 21,900 21,900 0 0.0018
2023-10-26 2023-09-30 13F ACM RESEARCH INC - COM 00108J109 21,900 21,900 0 0.0018
2019-07-25 2019-06-30 13F ACM RESEARCH INC - COM 00108J109 0 -2,400 -100.00 0 -100.00
2019-04-19 2019-03-31 13F ACM RESEARCH INC - COM 00108J109 2,400 0 0.00 37 42.31 0.0002
2019-01-23 2018-12-31 13F ACM RESEARCH INC - COM 00108J109 2,400 0 0.00 26 0.00 0.0001
2018-10-19 2018-09-30 13F ACM RESEARCH INC - COM 00108J109 2,400 0 0.00 26 4.00 0.0001
2018-08-06 2018-06-30 13F ACM RESEARCH INC - COM 00108J109 2,400 2,400 25 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.