Peter Thiel's hedge fund, Thiel Macro LLC, has sold its complete stake in Nvidia Corp., valued at approximately $100 million, during the third quarter. This move by the prominent investor comes amid growing concerns about a potential bubble in the Artificial Intelligence (AI) sector. SoftBank Group Corp. also previously disclosed selling its entire remaining Nvidia stake. These developments contribute to jitters in the tech market, with the Nasdaq index down 5% and the S&P 500's tech sector down 7% from their peaks, as investors await Nvidia's upcoming quarterly results.