美洲锂业公司（Lithium Americas Corp.，股票代码：LAC）今日盘前大跌5.11%，引发市场关注。这一跌幅可能是对前一交易日大幅上涨的回调，同时也受到分析师评级下调的影响。
据悉，Canaccord Genuity将美洲锂业的评级从"投机性买入"下调至"卖出"，这一消息可能是导致股价下跌的主要原因。此前，美洲锂业股价在上一个交易日曾大涨23.29%，主要受益于美国能源部（DOE）入股的消息。美国能源部获得了该公司5%的股份，以及其与通用汽车合资的Thacker Pass锂项目5%的股份。
值得注意的是，近期有报道称，美国政府正寻求购买澳大利亚关键矿产公司的股权，以减少对中国的依赖。这一背景下，美洲锂业作为重要的锂资源开发商，其股价波动也可能受到市场对锂矿产业整体关注度上升的影响。分析人士指出，投资者可能正在重新评估美国能源部入股对公司长期发展的实际影响，这也可能是导致股价回调的原因之一。
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