纳指期货早盘跌近1%，纳指相关ETF跌超2%

Core Viewpoint - The U.S. stock market experienced a decline on Tuesday, led by a drop in technology stocks, with Wall Street's notable short-seller warning of an AI bubble [1]. Group 1: Market Performance - The Nasdaq index futures fell nearly 1% in early trading [1]. - Nasdaq-related ETFs dropped over 2% in early trading [2]. Group 2: ETF Performance - Various Nasdaq ETFs showed significant declines, with the following notable performances: - Nasdaq ETF (513100) at 1.884, down 0.056, a decrease of 2.89% [3]. - Nasdaq 100 ETF (159660) at 2.089, down 0.057, a decrease of 2.66% [3]. - Nasdaq ETF (513110) at 2.132, down 0.058, a decrease of 2.65% [3]. Group 3: Company-Specific Insights - The market sell-off was triggered by a significant drop in the stock price of AI concept stock Palantir, despite the company reporting record revenue and raising its full-year performance expectations [3]. - This performance has intensified concerns regarding the overvaluation of technology stocks, indicating that investors are beginning to reassess the valuation levels within the tech sector [3].