Power Semiconductor Makers Roll Out Multiple Price Hikes as AI Demand Tightens Supply

The coordinated price moves across Infineon, Texas Instruments, STMicroelectronics and onsemi point to something more durable than a cyclical demand spike: AI-driven power demand is colliding with an inventory strategy shift at overseas IDMs, which are now building buffer stock rather than running lean. That reframes pricing power as a structural story tied to supply positioning, not just order flow. The read-through extends to smaller players like Panjit and Taiwan Semiconductor, whose planned October spot hikes suggest the tightness is spreading beyond the majors. Whether the IDM restocking persists, or proves a one-off hedge, is the open question.