STMicroelectronics shares rise 5.90% after-hours after completing acquisition of NXP's MEMS sensors business.

STMicroelectronics surged 5.90% in after-hours trading following the completion of its acquisition of NXP Semiconductors' MEMS sensors business, a deal announced in July 2025 and now fully approved. The acquisition is expected to enhance the company's sensor capabilities and generate significant revenue by early 2026, signaling growth potential to investors. Other news events, such as earnings-related sell-offs in prior quarters or unrelated market commentary, were either temporally disconnected or contradictory to the observed price movement. The positive reaction aligns with the strategic expansion and revenue outlook tied to the NXP acquisition.