Chipmaker Cerebras is set to make its U.S. market debut later on Thursday, as it looks to ride a wave of investor euphoria for companies that ‌are at the heart of the artificial intelligence boom. The firm's IPO is the largest this year ‌and comes as AI-linked stocks push broader markets to record highs despite challenges to global growth stemming from the Middle East conflict. The ​Sunnyvale, California-based chipmaker, which is a competitor to industry juggernaut Nvidia, raised $5.55 billion in an upsized offering, implying a valuation of $56.43 billion on a fully diluted basis.