Semtech (SMTC) Q4-26 earnings: The $80 AI optical leap & hunting for used fab gear

Semtech's Q4 earnings reveal a messy GAAP loss masking a scrappy, textbook pivot toward the AI data center boom.In ~10 minutes:• Why management is literally shopping for used laser factory equipment.• The silent $44.6M goodwill hit clearing out legacy IoT bags.• Translating the plan for an $8 to $80 optical module revenue leap.• How Amazon Sidewalk is finally pushing LoRa to mass consumer scale.The market completely whipsawed on this print, struggling to price legacy write-downs against genuine momentum in ultra-low-power networking and the recent HieFo acquisition. If Semtech can execute this hardware transition on a shoestring capital budget, the optical upside is massive—but the margin for error is razor-thin.Company: Semtech (SMTC) | Q4 FY2026AI-assisted production. Feedback/ticker requests: https://x.com/EarnUnscripted.