The rebound in shares of Taiwan Semiconductor Manufacturing Co. to a fresh record faces a key test with its earnings report Thursday amid intensified scrutiny after equipment supplier ASML Holding spooked chip investors.

Eased concern over Nvidia¡¯s newest artificial intelligence product and optimism over Apple¡¯s iPhone have renewed enthusiasm for their chip manufacturer TSMC. That drove its U.S.-listed shares up 30% from an August trough to touch a new peak.

The stock could get another lift from robust guidance following the company¡¯s artificial intelligence-driven preliminary sales beat for the latest quarter, market watchers say. Its comments on demand will be closely parsed, particularly after ASML¡¯s outlook cut in areas beyond AI sparked a slide in global chip stocks.