Nvidia Q1 revenue $81.6B +85% beats guidance, $80B buyback, yet NVDA declines 0.9% on May 21

Nvidia reported Q1 revenue of $81.6 billion (+85% YoY) and net income of $58.3 billion, significantly exceeding consensus, while announcing an $80 billion share buyback and Q2 guidance of $91 billion. Data center revenue nearly doubled year-over-year, reaffirming AI chip demand. Yet on May 21, NVDA closed down 0.9%, repeating a recent pattern of post-earnings weakness.