Nvidia forecast fourth-quarter revenue slightly above estimates on Wednesday, but still failed to meet lofty expectations of some investors who have made it the world’s most valuable firm.Shares of the Santa Clara, California-based company fell roughly 2% in extended trading. They had closed down 0.8% on Wednesday.The company forecast revenue of $37.5 billion, plus or minus 2% for the fourth quarter, compared with analysts’ average estimate of $37.09 billion according to data compiled by LSEG.“The age of AI ...