隨著全球科技產業快速發展，NVIDIA在人工智慧與高效能運算領域的技術突破對全球半導體供應鏈產生深遠影響，臺灣作為其核心合作夥伴（如TSMC、鴻海、緯創等），市場反應尤其受到矚目。本研究採事件研究法，選取NVIDIA於2023年SIGGRAPH大會的專題演講為研究事件，設定事件日前後共31日的期間，分析臺灣相關供應鏈廠商之異常報酬（AR）與累積異常報酬（CAR）。實證結果顯示，演講前市場反應偏向負面，事件日與其後短期的AR與CAR進一步下滑，反映投資者對訊息的初步解讀較為保守。然而，隨後市場情緒逐漸修正，異常報酬回升、CAR負值收斂，呈現「先負後正」的波動型態，顯示投資者在重大技術訊息釋出下會經歷初期不確定到重新評估的調整過程。

As NVIDIA advances global AI and high-performance computing, its announcements exert notable influence on Taiwan’s semiconductor supply chain, including firms such as TSMC, Foxconn, and Wistron. Using the event study methodology, this study analyzes the impact of NVIDIA’s 2023 SIGGRAPH keynote on Taiwanese supply chain firms over a 31-day window through abnormal returns (AR) and cumulative abnormal returns (CAR). The findings show a negative market reaction before and immediately after the announcement, indicating cautious initial investor sentiment. In the days that follow, AR gradually recovers and negative CAR narrows, reflecting a“negative-then-positive”adjustment pattern as investors reassess the information.