What is ACM Research's subpart f?

ACM Research (ACMR) reported subpart f of 1.7% in Q4 2025.

What does subpart f mean?

The percentage-based reconciliation item representing the impact of Subpart F income on the company's effective tax rate. It highlights the portion of the tax rate variance attributable to foreign passive income rules.

ACM Research ACMR Subpart F

Subpart F at other companies

Cadence Design SystemsCDNS

1.4%—

Cadence Design SystemsCDNS

$5.51M—

GE VernovaGEV

2.9%—

GE VernovaGEV

$20.25M—

Vertex PharmaceuticalsVRTX

-$24.35M—

Willis Towers WatsonWTW

$0-100%

Other financials

Income statement

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Revenue$231.3M+34.2%

Gross profit$107.2M+29.9%

Operating income$36.2M+40.3%

Net income$17.3M-15.1%

EPS (diluted)$0.24-20.0%

Balance sheet

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Cash & equivalents$894.1M+91.1%

Total debt$323.8M+91.3%

Total equity$1.6B+66.6%

Total assets$3.1B+58.5%

Cash flow

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Operating cash flow-$29.5M-659%

CapEx$22.2M+32.7%

Free cash flow-$51.7M-352%

Valuation

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Market cap$7.59B+75.5%

Enterprise value$7.02B+71.6%

P/E83.4×+42.8×

P/S7.9×+2.5×

Profitability

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Gross margin44.2%-5.0pp

Operating margin12.5%-6.4pp

Net margin9.5%-3.8pp

FCF margin-1.1%-0.5pp

Returns & leverage

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Return on equity7.2%-5.0pp

Debt / equity0.2×0.0×

Current ratio3.5×+1.1×

Where this comes from

Reported directly by ACM Research in its filing.

Tagged under the XBRL concept acmr:EffectiveIncomeTaxRateReconciliationCrossBorderSubpartFPercent.

The official record: ACM Research’s 10-K, filed March 2, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is ACM Research's subpart f?: ACM Research (ACMR) reported subpart f of 1.7% in Q4 2025.
What does subpart f mean?: The percentage-based reconciliation item representing the impact of Subpart F income on the company's effective tax rate. It highlights the portion of the tax rate variance attributable to foreign passive income rules.