Arm trades at an unsustainable 61 times sales and 302 times earnings. Maturing mobile royalties, massive stock compensation, and gross margin dilution from merchant silicon will trigger multiple compression. Initiate with a Strong Sell rating and a $190.00 target.
Key points
- 61 times trailing revenue prices flawless execution while mobile end markets face persistent memory inflation headwinds.
- 40% initial gross margin on AGI CPU silicon dilutes Arm’s historic 97% pure-play IP margin profile.
- $3.62 billion in unrecognized stock compensation over 1.6 years will severely depress GAAP operating earnings.
The call
At $294.37, the market prices Arm at 60.9 times trailing sales and 302 times trailing earnings. Sustaining this capitalization requires annual revenue to double by fiscal 2028 while expanding operating margins past 40%. The market is far too optimistic, treating high-margin processor IP licensing and capital-intensive, lower-margin merchant silicon production as equivalent businesses.
Quarterly revenue trajectory and forward projections ($ billions)- Reported revenue ($B)
- Forecast revenue ($B)
SEC filings and analyst forecasts as of October 2026.
Instead, smartphone unit softness caps fiscal 2027 royalty expansion in the high teens, while SoftBank related-party agreements account for 30% of revenue. Furthermore, transition into AGI CPU merchant silicon introduces foundry procurement risks, inventory exposure, and gross margins below 45%. We forecast fiscal 2028 GAAP earnings per share of $1.25, forcing multiple compression.
Valuation
Our 12-month target of $190.00 values Arm at 80.5 times our fiscal 2028 non-GAAP earnings estimate of $2.36 per share, or 28.3 times fiscal 2028 enterprise value to sales.
| Metric | Estimate | Valuation basis |
|---|
| Fiscal 2028E revenue | $7.10B | 21% annual growth including initial silicon shipments |
| Fiscal 2028E gross profit | $6.66B | Blended 93.8% margin reflecting merchant silicon dilution |
| Fiscal 2028E GAAP diluted EPS | $1.25 | Reflects $1.4B in annual share-based compensation dilution |
| Fiscal 2028E non-GAAP diluted EPS | $2.36 | Excludes share-based compensation and amortization |
| Target multiple | 80.5× | Applied to FY28E non-GAAP diluted EPS |
| 12-month price target | $190.00 | Implies a 35.5% decline from current trading levels |
FY28E Revenue and gross profit mix across business models ($ billions)- FY28E Revenue ($B)
- FY28E Gross Profit ($B)
Analyst forecast of FY28 operating profit profile by business line.
An 80.5 times forward non-GAAP earnings multiple remains an extraordinary premium to semiconductor peers like AMD and Nvidia. It adequately credits Neoverse server momentum while penalizing impending margin dilution and heavy stock compensation. Asymmetry heavily disfavors buyers at 61 times sales.
Risks
- Rapid hyperscaler deployment of Neoverse CSS N4 accelerators accelerating licensing and royalty cash collection ahead of schedule.
- Legal resolution of the Qualcomm breach dispute resulting in substantial one-time damages or elevated ongoing royalty rates.
- Acceleration of physical AI robotics adoption expanding compute subsystem ASPs faster than mobile unit deceleration.
What would change my mind
A re-acceleration of mobile royalty growth beyond 25% combined with binding hyperscaler contracts securing AGI CPU gross margins above 60% would prompt us to turn constructive.