Is the AI Gold Rush Over? Costco and Walmart Just Delivered a Sobering $163 Billion Warning to Shareholders of Nvidia, P

Key PointsShares of Nvidia and Palantir soared in the quadruple digits over three years, but they’ve lost momentum in recent weeks..

• April 08, 2026 — 06:40 am EDT Written byAdria CiminoforThe Motley Fool-> Shares of Nvidia and Palantir soared in the quadruple digits over three years, but they’ve lost momentum in recent weeks
• Investors have worried about AI spending and the general economic environment
• Over the past three years, artificial intelligence (AI) stocks have driven overall market gains -- investors, from the smallest retail investor to billionaire hedge fund managers, have piled into these players