AT&S's re-rating is underway, but the market has not priced what its Kulim plant becomes at scale; it is preferable to Japanese substrate makers Ibiden, Shinko and Toppan. The Kulim ramp drove an 18% sequential revenue jump, AMD is the anchor customer, more AI and HPC clients have joined, and five major customers are targeted by fiscal 2027. Free cash flow has turned positive at €223M. With Chongqing serving China and Kulim the West, AT&S collects tolls on both sides of the geopolitical divide. x.com




