Is ACM Research Stock a Buy After Investment Firm Seldon Capital Initiated a Large Position?
Key Points
Seldon Capital initiated a new position in ACM Research.
This position represents 2.66% of reportable assets under management (AUM).
Seldon Capital's post-trade stake was 193,242 shares valued at $7.56 million.
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What happened
According to a filing with the Securities and Exchange Commission dated November 14, 2025, investment management firm Seldon Capital LP disclosed a new position in ACM Research (NASDAQ:ACMR), adding 193,242 shares.
The estimated value of this position at quarter-end was $7.56 million, based on the reported holding as of September 30, 2025. The fund reported 70 total positions for the period.
What else to know
This is a new position, representing 2.66% of Seldon Capital's 13F AUM.
Top holdings after the filing:
- TLN: $30.14 million (10.6% of AUM)
- VT: $29.37 million (10.3% of AUM)
- CLS: $27.58 million (9.7% of AUM)
- VTI: $17.75 million (6.2% of AUM)
- ECH: $11.15 million (3.9% of AUM)
As of November 14, 2025, shares of ACM Research were priced at $31.51, and the one-year total return was 68.2%. The stock outperformed the S&P 500 by 57 percentage points.
Company Overview
| Metric | Value |
|---|---|
| Price (as of market close November 14, 2025) | $31.51 |
| Market capitalization | $2.12 billion |
| Revenue (TTM) | $880.35 million |
| Net income (TTM) | $117.11 million |
Company Snapshot
- ACM Research develops and sells single-wafer wet cleaning equipment, electro-chemical plating systems, and advanced cleaning technologies for semiconductor manufacturing.
- The company sells proprietary equipment and technology solutions to integrated circuit manufacturers through a direct sales force and third-party representatives.
- ACM Research sells single-wafer wet cleaning equipment for manufacturing integrated chips worldwide.
ACM Research is a leading provider of advanced wafer processing equipment for the semiconductor industry, specializing in single-wafer cleaning and plating technologies. The company leverages proprietary innovations such as space alternated phase shift and timely energized bubble oscillation to address the needs of cutting-edge chip fabrication.
With a global customer base and a focus on enhancing manufacturing yields, ACM Research positions itself as a key enabler of next-generation semiconductor production.
Foolish take
Seldon Capital's purchase of ACM Research stock is noteworthy because it's a new position, and it was of substantial size, bringing ACM shares to 2.7% of AUM. This suggests Seldon Capital holds a bullish outlook towards the company.
The buy in the third quarter was prescient as ACM Research shares hit a 52-week high of $45.12 in October. The rise in stock price is understandable given ACM's excellent business performance.
In Q3, sales rose a strong 32% year over year to $269.2 million. The company expects full-year revenue to come in between $875 million and $925 million. This represents excellent growth over 2024's $782.1 million.
ACM Research's diluted earnings per share (EPS) is also rising year over year. Through the first three quarters of 2025, its diluted EPS was $1.26 compared to $1.07 in 2024.
With its outstanding performance, ACM Research looks like a solid investment in the hot semiconductor industry.
Glossary
New position: When an investor or fund buys shares of a company for the first time.
Assets under management (AUM): The total market value of investments managed by a fund or financial institution.
13F: A quarterly SEC filing required from institutional investment managers to disclose their equity holdings.
Reportable assets: Investments that must be disclosed in regulatory filings, such as those included in a 13F report.
Total return: The investment's price change plus all dividends and distributions, assuming those payouts are reinvested.
Outperformed: Achieved a higher return than a specified benchmark or index over a given period.
Market close: The end of the regular trading session for a stock exchange on a given day.
Proprietary equipment: Technology or products owned and developed by a specific company, not available to competitors.
Integrated circuit manufacturers: Companies that design and produce semiconductor chips used in electronic devices.
Single-wafer wet cleaning equipment: Machines that clean individual semiconductor wafers using liquid chemicals during chip manufacturing.
Space alternated phase shift: A specialized technology used to improve semiconductor wafer processing efficiency and precision.
TTM: The 12-month period ending with the most recent quarterly report.
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Robert Izquierdo has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Celestica and Vanguard Total Stock Market ETF. The Motley Fool has a disclosure policy.
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