Taiwan Semiconductor Manufacturing Co (TSMC) posted its slowest monthly revenue growth in more than a year, lending credence to concerns that the artificial intelligence stock rally is not justified by the industry’s business prospects. TSMC, the main contract manufacturer to AI chip leader Nvidia, posted a 16.9 per cent rise in sales for October, the slowest pace since February 2024. Still, that tracks with the average analyst estimate for a 16 per cent sales increase in the current quarter....