Amkor Stock Crashes 25% Despite $1.5 Billion Nvidia Vote of Confidence

Amkor Technology just landed one of the biggest votes of confidence a chip supplier can get, and the stock cratered anyway. Nvidia agreed to a $1.5 billion multi-year deal in which it will prepay Amkor to help fund a new advanced-packaging campus in Arizona. Five trading days later, Amkor shares fell nearly 25% in a single session. The disconnect shows just how unforgiving the market has become with AI-adjacent stocks that don't deliver clean near-term numbers, even when the long-term thesis gets stronger.

The packaging deal itself is a big deal for the chip industry. As AI accelerators get more complex, stitching together multiple dies, memory, and high-density interconnects, packaging has become almost as important as the chips themselves. Amkor's Arizona buildout is central to that shift, and Nvidia's willingness to prepay signals real, committed demand rather than a speculative side bet. Amkor's underlying business also looked healthy: second-quarter sales rose 26% year-over-year to a record $1.90 billion, with gross margin improving to 16.8% from 12.0% a year earlier and diluted EPS reaching $0.70. What spooked investors was Q3 guidance of $1.95 billion to $2.05 billion in sales, paired with $2.5 billion to $3.0 billion in planned capital spending this year — a heavy investment load that won't pay off immediately. B. Riley's Craig Ellis kept a Neutral rating and trimmed his price target from $75 to $65 on the setup. Hedge funds have stayed engaged regardless: 57 funds held Amkor shares at the end of Q2, up from 49 the prior quarter, and Citadel boosted its position more than fourfold. Short interest sits at roughly 4.9% of the public float.

For investors, the Amkor selloff is a reminder that an AI partnership doesn't guarantee an immediate stock pop — execution and near-term guidance still matter just as much as the strategic narrative. If you already own Amkor, the Nvidia commitment is a legitimate reason to stay patient through a heavy capex cycle rather than a red flag to sell into weakness. For those looking to add exposure, the post-selloff price offers a cheaper entry into a company with a genuine, demand-backed reason to expand — but expect the stock to stay volatile until the new capacity starts converting into revenue. Watch Amkor's utilization rates and customer concentration over the next few quarters; that's what will determine whether this dip becomes a buying opportunity or the start of a longer capex hangover.