TLDRAmkor stock jumped 15.72% after-hours after the NVIDIA partnership announcement.NVIDIA will prepay to support Amkor’s Arizona packaging capacity expansion.Partnership targets advanced AI chip packaging and testing technologies.Companies will align long-term roadmaps for next-generation AI platforms.U.S. expansion strengthens semiconductor manufacturing and supply resilience.Amkor Technology (AMKR) shares surged in after-hours trading after the company announced a multi-year partnership with NVIDIA. The agreement supports expanded U.S. semiconductor packaging capacity and advances technologies for future AI computing platforms. Amkor stock closed at $65.33, down 2.45%, before climbing 15.72% to $75.60 during after-hours trading.Amkor Technology, Inc., AMKRNVIDIA Supports Amkor U.S. Packaging ExpansionThe agreement establishes a long-term partnership between Amkor Technology and NVIDIA. NVIDIA will provide a prepayment supporting the expansion of Amkor’s advanced packaging operations in Arizona. The companies will also coordinate technology roadmaps for future semiconductor packaging solutions.Advanced packaging has become a key part of modern semiconductor manufacturing. It improves performance, power efficiency, and system integration for complex computing platforms. Demand continues rising alongside larger AI infrastructure deployments.The collaboration focuses on high-density interconnect technologies and next-generation heterogeneous integration. These technologies combine multiple semiconductor components into advanced packages for higher computing performance. Therefore, the partnership targets future accelerated computing platforms requiring greater processing capability.Capacity Growth Supports Domestic Semiconductor SupplyThe agreement expands Amkor’s advanced packaging and testing capabilities within the United States. The Arizona expansion complements the company’s established manufacturing network across Asia. This approach strengthens production flexibility while supporting a broader global supply chain.The companies also intend to improve domestic semiconductor manufacturing capacity. Increased U.S. packaging capability reduces dependence on overseas production for critical semiconductor technologies. As a result, the partnership supports broader efforts to strengthen semiconductor supply resilience.Amkor already provides advanced packaging services across NVIDIA’s product portfolio. Its technologies support data center processors, networking chipsets, and accelerated computing systems. The expanded agreement builds on that existing relationship while increasing future production capacity.Advanced Packaging Demand Continues RisingThe partnership aligns with growing demand for advanced semiconductor packaging across computing markets. Modern processors require complex packaging methods to deliver higher performance within limited power budgets. Packaging technology has become increasingly important throughout semiconductor manufacturing.Amkor operates as the largest U.S.-headquartered outsourced semiconductor assembly and test provider. The company delivers advanced packaging, wafer-level processing, and system-in-package solutions for multiple industries. Its customers include semiconductor and electronics companies serving smartphones, automobiles, wearables, artificial intelligence and data centers.The new agreement accelerates Amkor’s long-term packaging roadmap while expanding U.S. manufacturing capacity. It also strengthens cooperation with NVIDIA across future semiconductor development programs. Together, both companies aim to scale advanced packaging technologies to meet increasing computing infrastructure demand. The post Amkor Technology (AMKR) Stock: Rebounds as NVIDIA Backs U.S. AI Chip Packaging Expansion appeared first on Blockonomi.