ASMI, Besi, STM: Earnings Week to Test Structural Drivers and High Expectations

Core Thesis

This week's European semiconductor earnings (ASMI, Besi, STM) will pivot from backward-looking financials to validating forward-looking structural growth drivers—advanced logic and hybrid bonding. Investor focus should shift to guidance dynamics, where high embedded expectations (Besi) and potential for positive surprises (STM margins, ASMI demand) create asymmetric risk/reward.

What The Market May Be Mispricing

The market likely underestimates STM's capacity for margin guidance upside through product mix and utilization improvements, despite weak auto and consumer electronics macros. For ASMI, the lag between strong underlying demand and its translation into Q2 guidance is underappreciated. Besi’s ~30% share price rally since last quarter suggests buy-side expectations are ahead of consensus, requiring an order beat—particularly in hybrid bonding—to justify further momentum.

Evidence Chain

ASMI's Q2 Guidance Presents Near-Term Upside, Despite H2-Weighted Commentary. Our Q2 revenue estimate of €909M stands ~2% above consensus, indicating potential for guidance upside. However, commentary from peers (ASML, VAT) points to a second-half-weighted year, which may temper near-term guide revisions. The key monitorable is management's view on the strength and timing of the 1.4nm build-out, given ASMI's leverage to advanced logic/foundry spending. The investment implication is that positive demand signals may not be fully reflected in the immediate Q2 guide, creating a potential setup for sequential positive revisions later in the year.

Besi Faces a High Expectations Hurdle, Making Order Intake Paramount. We forecast Q1 orders of €227M, below the €250M consensus, with acknowledged upside risk from hybrid bonding (HB). The critical issue is that the share price surge since the last print implies investor expectations may already exceed street numbers. With a high backlog (~€317M) securing near-term revenues, the stock's next move hinges on order flow beating elevated expectations, specifically in HB and TCB adoption. The investment takeaway is that in-line execution may not suffice; a clear order beat is likely needed to sustain the current valuation premium.

STM's Margin Guidance Holds Surprise Potential Amidst End-Market Concerns. Despite well-documented headwinds in personal electronics and automotive, STM's Q2 margin guide could surprise positively. This stems from lower under-utilization charges and a more favorable product mix, factors the market may be discounting. While photonics commentary will be noted, it remains a 2027 story. The investment meaning is that operational efficiency improvements offer a near-term catalyst that could diverge from the bearish end-market narrative.

Key Disagreements & Risks

• Slower-than-expected acceleration in leading-edge logic/foundry capex.
• Hybrid bonding adoption in HBM and advanced packaging progresses more slowly than anticipated.
• Protracted macroeconomic weakness depressing automotive and industrial demand, impacting STM.
• Besi-specific risk: Order intake fails to materially surpass high expectations, triggering profit-taking.

Valuation & Trade Implications

The trading focus should be on forward guidance and new order momentum rather than minor historical financial variances. For ASMI, watch the Q2 revenue guide and comments on 1.4nm expansion for confirmation of structural demand. For Besi, the Q1 order number, particularly the HB component, is the key short-term price determinant. For STM, an upward revision to the Q2 margin guide could serve as a positive catalyst against a cautious macro backdrop.

Appendix: MS Estimates vs. Consensus Summary