Nvidia was gaining early on Wednesday after Google-parent Alphabet committed to spending on artificial-intelligence infrastructure and rival Advanced Micro Devices’ AI chip revenue disappointed. Nvidia shares were up 0.

AMD stock is down as the AI chipmaker beat Wall Street expectations for its top and bottom line numbers, but fell short on data center sales.

By Kanchana Chakravarty and Zaheer Kachwala (Reuters) -Advanced Micro Devices shares tumbled 8% on Wednesday after the company's AI chip revenue failed to meet analysts' high expectations, underscoring its struggle to grab market share from well-entrenched market leader Nvidia.