Amkor二季度毛利率和EPS超预期，但亚利桑那投产稀释框架未变

Amkor Technology Inc: GM% surprise; Arizona framework reiterated
AMKR reported a strong beat and raise on GM% and EPS, driven by Computing and Automotive/Industrial strength and broad-based utilization improvement.
GM% came in well ahead of expectations at 16.8% (+250bps sequentially), ⅔ volume-driven and ⅓ mix. EPS of $0.70 included a $14mn discrete tax benefit (ETR of 14% vs. ~20% full-year guide); the underlying beat was still substantial. Our estimates move higher on stronger GM% execution and an accelerated compute ramp, though the Arizona dilution math - reiterated on the call - partially offsets the magnitude of our upward revisions.
We are giving the company credit for strong execution - GM% is running well ahead of schedule (high-teens initially guided for 2H), Phase 1 Arizona is now fully committed, and the NVIDIA prepayment ($1.5bn, to be received in 2027 and booked as deferred revenue, returned to the customer as services are delivered; Amkor owns the capex separately and the prepayment does not reduce gross capex). That said, the ~$2.50 2026 EPS exit rate is not a straight-line jumping-off point: 2027 brings a 1-2% operating margin headwind as Arizona startup costs ramp in OpEx, and 2028 brings a second wave of GM% dilution as those costs flip into COGS from an underutilized new facility. Comms adds near-term complexity, with Q3 guided down high-single-digits sequentially - ~50% strategic SiP migration from Korea to Vietnam (a multi-quarter dynamic extending into Q4 and 1H27), ~50% market-driven Android softness and memory constraints. We remain EW.
What we learned from the call/callback/release:
1.) (+) GM% well ahead in 2H - utilization and mix the twin drivers. The 16.8% GM% beat our 15.1% estimate by ~170bps and came in above the high end of guidance.
Key Takeaways
JunQ GM%/EPS beat-and-raise on Computing/Auto (mix) and utilization; 3Q26 GM% & EPS guide well above MSe/Street; revenue broadly in-line overall.
Strong execution but Arizona remains a multi-year dilution story - OpEx headwind in 2027, gross margin headwind in 2028.
PT little changed at $69→$70; ~$2.50 2026 EPS exit rate is not a straight-line jumping-off point for 2027.
Per the call, ⅔ of the 250bps sequential expansion was volume/utilization-driven and ⅓ was favorable product mix, with advanced packaging carrying meaningfully more accretive margins than the mainstream portfolio. The 3Q26 GM% guide of 18.5-19.5% is well above MSe/Street at 16.3%/17.4%, driven primarily by an accelerated compute ramp; Q4 GM% was not guided but mgmt indicated flat vs. Q3 is not unreasonable.
2.) (-) Communications - below seasonal, strategic SiP migration adds complexity. Q3 Comms guided down HSD sequentially, driven by: (i) the strategic SiP migration from Korea to Vietnam (~50% of the decline, coordinated with customers for over a year, freeing up Korea capacity for higher-value advanced packaging); and (ii) market-driven headwinds including memory constraints and build pattern changes (~50%, more pronounced in Android, which was already down 20% q/q in 2Q).
3.) (=) Arizona framework unchanged - NVIDIA prepayment clarified, 2026 exit rate creates a misleading baseline for 2027-2028. The Investor Day framework (1-2% operating income dilution starting 2027, costs moving from OpEx to COGS in 2028) was reiterated; the two customer agreement announcements since Investor Day increased visibility but did not change the dilution math. The $1.5bn NVIDIA prepayment will be received in 2027 and booked as deferred revenue, returned to the customer as services are delivered in the US over a 5-10 year term; it is an operating cash inflow but does not reduce gross capex, which remains $2.5-$3.0bn unchanged. While AMKR is tracking to exit 2026 at ~$2.50 EPS, 2027 and 2028 are not a straight-line extrapolation: 2027 takes an OpEx hit from Arizona startup costs, and 2028 takes both an OpEx hit and a gross margin hit as those costs flip into COGS once production begins.
Result Details:
• Details on the June quarter: Revenue, gross margin and EPS were above our estimates. Revenue of $1.898bn (up 12.7% q/q and 25.6% y/y) was above our estimate of $1.810bn. GM/EPS came in at 16.8%/$0.70, above our estimates of 15.1%/$0.46.
• September quarter guidance. The company guided revenue, gross margin and EPS largely above our estimates. Amkor expects revenue of $2.000bn (up 5.4% q/q and 0.7% y/y) at the midpoint, slightly below our estimate of $2.026bn. GM/EPS were guided to 19.0%/$0.77, above our estimates of 16.3%/$0.59. The company increased its 2026 capex guide to approximately $2.5bn.
• Changes to our estimates: Our FY26 estimates come up due to stronger GM% and EPS from $7.57bn/15.9%/$2.07 to $7.60bn/17.4%/$2.58, while our