AI revenue grew 24% while gross margin contracted. Receivables aged 11 days.
Thesis: Unimicron is a price taker. AI volume is moving but margins are falling. Receivables aging by 11 days shows they have zero leverage over strategic customers. They are building NT$25 billion in capacity for a market they do not control. The street buys the story. We sell the unit economics.
Verdict: SHORT — Conviction: HIGH
Catalyst: Gross margin failing to expand in Q4 despite continued AI volume growth.
Key Risk: A sudden supply shock in ABF substrates that forces hyperscalers to accept price increases.
The Tell: Management dodged the question on when ABF utilization returns to 2024 peaks. They cited calculation differences between factories. This confirms they lack visibility into a full recovery.
Friction Level: HIGH_FRICTION — The disagreement centers on pricing power. One side views 80% utilization as a margin catalyst. The other views falling margins at those levels as proof of zero leverage. Receivables aging is the deciding factor for the bear case.
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