Shares of Taiwan Semiconductor Manufacturing Co. climbed firmly on the first trading day of 2026, extending a broad semiconductor rally that has swept the sector since late 2025. The stock surged by as much as 6% during intraday trade, marking its strongest one-day advance since April. Trading volume topped 2 million shares, well above the 50-day daily average of 1.4 million. Over the past 12 months, the company’s shares have appreciated roughly 45%, outperforming the global semiconductor index by more than 20 percentage points.

A bullish research note from Goldman Sachs analysts on Monday helped lift early trading sentiment, as the firm reiterated its conviction that Taiwan Semiconductor can replicate last year’s gains. The Wall Street bank maintained an “outperform” rating and highlighted the foundry’s robust order book for advanced nodes, including strong demand for 5-nanometer and 3-nanometer capacity. Goldman’s team cited expanding design wins with leading AI customers and forecast a revenue compound annual growth rate in the high-teens through 2028, supported by multi-year agreements and planned capacity additions in Taiwan and Arizona.

Taiwan prosecutors announced they have filed new charges against the local unit of Tokyo Electron and three other individuals in connection with the alleged misappropriation of proprietary process technology from the chipmaker. The indictment accuses the defendants of illicitly obtaining technical documents related to extreme ultraviolet lithography, a core component of Taiwan Semiconductor’s most advanced manufacturing nodes. If convicted, the parties could face both criminal penalties and civil claims for damages, adding legal uncertainty to the company’s intellectual property protection framework.