Softbank and Peter Thiel's Macro LLC have sold their entire holdings in Nvidia, reflecting growing concerns over a potential AI market bubble. Softbank liquidated its $5.83 billion stake to support a $22.5 billion investment in OpenAI. Meanwhile, Thiel's hedge fund exited its Nvidia position in the third quarter, as disclosed in a 13F filing. Despite these sales, both Softbank and Macro LLC continue to invest in the AI sector, maintaining a bullish outlook. Analysts are drawing parallels to the dot-com bubble, noting Nvidia's $5 trillion valuation and significant AI spending commitments as potential indicators of market overheating.