Shares of Amkor Technology (AMKR) climbed 18.8% after the company secured a 10-year agreement with chip giant TSMC, according to Yahoo Finance Australia.
Under the deal, Taiwan Semiconductor Manufacturing Company will work with Amkor to expand advanced semiconductor packaging and testing capacity in Arizona, according to Yahoo Finance. The arrangement is aimed at supporting a more complete chipmaking presence in the United States.
The partnership connects two key links in the chip supply chain. TSMC is the world's largest contract chipmaker, manufacturing the silicon that powers everything from smartphones to data centers. Amkor specializes in the step that comes after a chip is fabricated: packaging and testing, which protect the delicate silicon and prepare it to be installed in finished products. Pairing TSMC's Arizona fabrication plans with Amkor's packaging work means more of the chip's journey can happen on American soil rather than being shipped overseas.
The sharp move in Amkor's stock reflects how investors are reading the agreement. A decade-long commitment offers Amkor a long runway of work tied to one of the most important manufacturers in the industry, reducing uncertainty about future demand.
The two source reports, from Yahoo Finance and Yahoo Finance Australia, both center on the same announcement and the same stock reaction. Neither item details the financial terms of the arrangement or specific capacity figures.
Why it matters: advanced packaging is an increasingly critical bottleneck in building cutting-edge chips, so a long-term U.S.-based pact between the largest contract chipmaker and a leading packaging firm signals real momentum behind efforts to build a domestic semiconductor supply chain.