5月21日，Allegro MicroSystems盘中上涨5.11%，报43.78美元/股，成交额4844.97万美元。消息面上，半导体板块整体大幅反弹，美国超微公司涨7.64%、英特尔涨6.45%、迈威尔科技涨4.9%、美光科技涨4.24%、英伟达涨1.7%，行业系统性走强提振个股表现。
此前公司因重要股东连续披露144表格拟减持证券，股价自5月12日起累计回调超14%，当前反弹具有超跌修复特征。需注意的是，5月18日公司再次披露新一轮减持申报，后续抛压信号仍存。
（以上内容均基于市场公开消息，由程序或算法智能生成，仅作为股价异动提醒，不作为投资建议或交易依据。）
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