In nearly every stock's life, sooner or later it has a day where the market just can't decide whether it's a buy or sell. That happened to mighty chipmaker Taiwan Semiconductor Manufacturing (NYSE: TSM) (TSMC) on Thursday. Not coincidentally, this was the trading session just after the current hot company in the chip sphere published its latest market-shaking news item. On the day, TSMC traded sideways, which happened to match the flat line of the bellwether S 500 index.

This occurred despite a clutch of generally positive new analyst takes on TSMC shares. Numerous pundits felt compelled to weigh in on TSMC, as graphics processing unit (GPU) king and company peer Nvidia had unveiled its second quarter of fiscal 2025 results after market close on Wednesday.

Citigroup, for one, feels there's more gain in store for TSMC stock. In a fresh analysis, the bank pointed out that the company has managed to double capacity to produce its chip-on-a-wafer-on-substrate (CoWoS). This next-generation "packaging" technology is designed for high-performance computing (HPC) and for artificial intelligence (AI) functionalities.

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Source Fool.com