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Core Viewpoint - The article discusses the significant drop in the stock price of Marvell Technology, attributed to a downgrade in its stock rating by Benchmark analyst Cody Acree, who expressed concerns over Marvell's competitive position in the AI chip design business with Amazon [1][4]. Group 1: Stock Performance - Marvell Technology's stock price fell over 10% during trading, ultimately closing down 6.99%, with a total market capitalization of $78.025 billion (approximately 551.7 billion RMB) [2][4]. - The overall U.S. stock market saw a decline, with the Dow Jones down 0.45%, Nasdaq down 0.14%, and S&P 500 down 0.35% [9]. Group 2: Analyst Insights - Cody Acree downgraded Marvell's stock rating from "Buy" to "Hold," citing a strong belief that Marvell has lost the design business for Amazon's AI chips to competitors [4][5]. - Acree indicated that the expected growth of Marvell's XPU (specialized high-performance processing units) will slow to only 20% by 2026, which is a significant concern for the company's future performance [4]. Group 3: Market Reactions - Following the news, Broadcom's stock surged over 4%, reaching a new all-time high with a market capitalization of $1.89 trillion [6][7]. - Despite the negative news surrounding Marvell, JPMorgan analyst Harlan Sur maintained a "Buy" rating for Marvell, setting a target price of $130, arguing that concerns about losing Amazon and Microsoft chip design business are overstated [7]. Group 4: Broader Market Sentiment - Several Wall Street analysts have issued warnings about the future of the U.S. stock market, suggesting that recent gains may stall due to profit-taking by investors [1][10]. - Yardeni Research recommended underweighting the "Tech Seven Giants" in favor of other sectors, predicting a change in future profit growth trends for these tech companies [11].