Wall Street has a new national pastime: seeing how many innings the AI boom can have. Cantor Fitzgerald just raised its price target on Nvidia to $300 (from$240), calling the company only “midgame” in the global race to build AI infrastructure, according to sites that saw the note. This is the most bullish call yet on a stock that’s already rewritten the record books — and a reminder that even trillion-dollar valuations haven’t satisfied investors’ appetite for GPUs. The firm’s analysts reportedly expec ...