Analyst: The sharp rise in the U.S. semiconductor sector in April has "completely detached from the fundamentals."

Benefiting from the leading growth of cloud business, Alphabet rose 10% on Thursday, with a cumulative increase of around 34% this month. Chip maker Intel surged 114% this month, leading the S&P 500 components with impressive financial reports; storage giants SanDisk, Seagate Technology, and ON Semiconductor also saw significant gains. Jones Trading analyst Mike O'Rourke said that the April surge in the semiconductor sector is "completely detached from fundamentals," and "stock investors remain unconcerned despite the stalemate in the Strait of Hormuz."