Chinese chip foundry CanSemi Technology’s Shenzhen initial public offering (IPO) is emerging as one of mainland China’s most sought-after tech listings this year, as investors bet on its push into silicon photonics and its role in domestic artificial intelligence infrastructure. The Guangzhou-based company’s retail tranche was oversubscribed by more than 2,300 times after clawback, according to a stock exchange filing late on Sunday, as investors scrambled for a piece of the domestic...