Amkor expands Arizona campus to $12 billion investment
Amkor Technology plans a $12 billion expansion of its Arizona campus, driven by customer demand. Phase 2 will add to the 33,000 sq. m of cleanroom capacity in Phase 1, supporting over 3,500 employees. Construction is set to start in late 2027 and finish by 2029, making it the first U.S. site for advanced packaging production.
How this was made

The 30-second read
Why it matters
The $12 B Arizona campus expansion positions Amkor to capture high‑volume advanced packaging demand in the US.
Market read
Large capex underscores confidence in US semiconductor demand and may lift Amkor's valuation.
What to watch
Potential construction delays or cost overruns could offset benefits.
Background
Amkor Technology is a leading outsourced semiconductor assembly and test (OSAT) provider.
Ticker impact
Amkor announced a $12 billion Phase 2 expansion of its Arizona campus, adding cleanroom capacity and jobs.
Potential upside as investors price in expanded capacity and US‑based production.
The $12 B investment is material for a mid‑cap OSAT provider and reflects strong customer demand.
Market effects
May encourage other semiconductor packaging firms to expand US capacity.
Boosts Arizona's high‑tech employment outlook.
Supports broader US semiconductor supply‑chain resilience.
Counterpoint
Capex could strain cash flow if demand softens, leading to short‑term pressure.
Key entities
- ExecutiveKevin Engel
President and CEO of Amkor Technology, quoted on the expansion.

