Amkor shifts SiP to Vietnam, frees Korea plants for AI packaging

Amkor Technology reported record second-quarter results for 2026, driven by broad-based revenue growth and significant changes to its manufacturing strategy. During the earnings Q&A session, President and CEO Kevin Engel and CFO Megan Faust outlined the company's strategy across ten key areas, including responses to smartphone demand volatility and long-term financial implications of a new US manufacturing facility.

At the heart of the company's strategic shift is the reallocation of System-in-Package (SiP) production from South Korea to Vietnam. SiP is a packaging technology that combines multiple semiconductor components into a single integrated package, traditionally a high-volume, lower-margin business. By relocating SiP manufacturing to Vietnam — where operating costs are lower — Amkor is freeing its advanced Korean cleanrooms to focus on AI-related packaging work, which commands higher margins and increasingly drives demand from major customers racing to scale AI infrastructure.

The move underscores a critical bottleneck in the AI supply chain: packaging capacity. While wafer fabrication has drawn enormous attention and investment, the step of packaging — preparing chips for integration into systems — has become a supply constraint as data center and cloud deployments accelerate. Amkor's decision to dedicate its most advanced facilities to AI packaging reflects the company's view that this is where growth and profitability will concentrate in the near term.

Amkor's reallocation of SiP production to Vietnam reflects a fundamental shift in how contract manufacturers are deploying capital and capacity in response to AI demand. System-in-Package (SiP) — a packaging technology that integrates multiple components into a single package — has historically been a lower-margin, high-volume business; Vietnam's lower labor and operational costs make it a natural fit for this commodity-like work. Conversely, AI packaging, which demands tighter tolerances, advanced materials, and specialized equipment, commands higher margins and attracts more sophisticated customers.

By freeing Korean cleanrooms from SiP work, Amkor signals that it sees AI packaging as its future growth engine. The company's record Q2 results, underpinned by broad-based revenue growth, suggest strong underlying demand across its portfolio — and the strategic reallocation points to a deliberate prioritization of high-margin opportunities within that growth. This move also aligns with the broader industry narrative: AI chip deployment is straining packaging capacity globally, making access to advanced packaging lines a competitive advantage for customers and a lever for suppliers to expand margins.

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