The world's most valuable company said it expected fiscal fourth-quarter sales of US$65 billion, plus or minus 2 per cent, compared with analysts' average estimate of US$61.66 billion, according to data compiled by LSEG. Nvidia forecast fourth-quarter revenue above Wall Street estimates on Wednesday (Nov 19), betting on booming demand for its AI chips from cloud providers against the backdrop of widespread concerns of an artificial-intelligence bubble.  The results from the AI chip leader mark