ACM Research retreats 9% as recent gains fade

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Shares of ACM Research (ACMR), a semiconductor process equipment developer, slumped almost 9% on Monday, closing at $76.17 after falling $7.21 on the session. The slide counteracted some recent gains, including a 7% gain on September 30.

ACMR has posted a year-to-date gain of 93%, although it is sitting well off its 52-week high of $127.19 reached in the middle of the year.

Results from 4:00 PM 10/05/26 - market data may have changed

ACMR - ACM Research, Inc.

$76.17

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Wall Street

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ACMR

Line chart with 250 data points.

Chart represents ACMR over 1Y period

The chart has 1 X axis displaying Time. Data ranges from 2025-10-06 00:00:00 to 2026-10-02 00:00:00.

The chart has 1 Y axis displaying values. Data ranges from -28.99 to 203.71.

End of interactive chart.

Recent Stock Movement

The table below showcases the stock's daily activity over the past few days:

ACMR Daily Returns

By the Numbers: ACM Research

• Today's Range: $75.19 - $83.39 (as of 4:00pm ET)
• Previous Close: $83.38
• Volume: Approximately 2.12 million shares, with relative volume of 1.84x the one-month average
• 52-Week High: $127.19
• 52-Week Low: $28.46
• 50-Day Simple Moving Average: $76.54, near the current price
• 200-Day Simple Moving Average: $67.03, roughly 14% below the current price
• RSI (14-Day): 60.5
• Short Interest: 7.11% of float
• Forward P/E: 38.71
• PEG Ratio (Forward, Non-GAAP): 0.97

Other Recent News: ACM Research

• September 30: ACM Research announced that management would attend the 18th Annual CEO Investor Summit on October 13, 2026, in San Francisco, where it is expected to meet with investors and research analysts.
• September 30: The company filed an 8-K with the SEC reporting the issuance of the ACM Research (Shanghai) backlog press release under Item 8.01, with the release included as an exhibit under Item 9.01.

What SA Users Are Saying About ACM Research

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