TSMC Rides Retail Frenzy to New Stock Highs as AI Boom Returns

A surge of retail investor buying has helped drive shares of Taiwan Semiconductor Manufacturing Co. to a record high as the artificial intelligence trade roars back to life.

The world’s top chipmaker has climbed to fresh peaks this week, erasing its loss since the start of the Iran war. Earnings due Thursday from the key Nvidia Corp. supplier will help global traders gauge whether the rebound in AI infrastructure stocks is merited.