联合健康（UNH）今日盘前大跌5%，引发市场关注。该股价格走势与近期分析师评级调整密切相关。
消息显示，汇丰银行于今日将联合健康的投资评级从"持有"下调至"减持"，同时大幅下调目标价，从490美元降至270美元。这一评级调整直接触发了投资者的抛售情绪，导致股价在盘前交易中快速下跌。
作为道琼斯工业平均指数的重要成分股，联合健康的股价变动可能对整体市场产生一定影响。投资者正密切关注该公司未来的业务发展前景及潜在的行业政策变化。在当前美国医疗保健政策不确定性增加的背景下，联合健康面临的挑战可能进一步加剧。
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