On September 29, ASE Technology rose 3.06% in regular trading, trading at $44.98/share, with turnover of $71.33 million. The gain came as the broader semiconductor sector staged a collective rebound following the prior session's sharp selloff triggered by OpenAI's decision to pause training of its most advanced AI model.

The semiconductor sector saw widespread gains, with Broadcom up 3.44%, Micron Technology up 2.39%, Intel up 1.51%, Advanced Micro Devices up 1.32%, and NVIDIA up 0.99%. On the fundamental side, ASE Technology's parent ASE Technology Holding had previously secured additional advanced packaging and testing orders from Google for its TPU chips and from Intel for its EMIB advanced packaging platform. The company also raised prices on CoWoS, FoCoS, and other advanced packaging services in July, with some categories seeing increases exceeding 20%. Market estimates project Google TPU shipments could reach 12 to 15 million units by 2028, underpinning sustained demand. The tight supply-demand dynamics in advanced packaging capacity continue to provide support for the stock.

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