Several Wall Street CEOs have raised red flags, cautioning that U.S. stock valuations are currently inflated and could be poised for a correction exceeding 10%. In the wake of these warnings, all three major U.S. stock indices kicked off the trading session on a downbeat note, with the Nasdaq, S&P 500, and Dow Jones all registering declines. Tesla's shares took a 3.3% hit, driven by a confluence of factors, including the Norwegian sovereign wealth fund's rebuff of Musk's compensation package and a nearly 10% year-on-year slump in Chinese shipments during October. Meanwhile, Nvidia's stock price dipped by 2.4%, and Palantir witnessed a steep drop exceeding 8%. Market anxieties surrounding a potential AI bubble have escalated, with the investor renowned for the 'Big Short' bet having positioned 80% of his portfolio to short these two stocks. Uber's stock price nosedived over 8% after its third-quarter operating profit fell short of market expectations, and the company's CEO forecasted that Robotaxi services would face an uphill battle in attaining profitability in the foreseeable future.