ASE Technology vs. Amkor: Which Chip Packaging Stock Is the Better Buy? - TradingView

Driven by artificial intelligence (AI) and high-performance computing, demand for advanced semiconductor packaging has surged, elevating the importance of outsourced semiconductor assembly and test (O... Read original →

The AI compute arms race has thrust advanced packaging into the semiconductor value chain’s core. ASE’s outperformance over Amkor reflects a strategic divergence: its LEAP platform and HDFO processes deliver superior yield and integration density for HBM and AI accelerators, directly boosting demand for Applied Materials’ and KLA’s deposition and inspection tools. Geopolitically, Taiwan, China’s concentration of OSAT capacity is forcing clients to diversify to Vietnam and Korea, inflating capex by 15–20%. Amkor may respond by doubling down on flip-chip niches or deepening ties with U.S. IDMs. Over the next 18 months, advanced packaging will shift from optional to architectural prerequisite in AI chip design. OSATs with CoWoS-alternative capabilities will capture supernormal margins—and ASE already occupies the most defensible position. Its current valuation discount is a market misread.