自成为日本市值最高公司以来，存储芯片制造商铠侠市值在一个月内缩水一半，因投资者愈加担心AI驱动的行业上涨行情已过度。
周五东京早盘交易中，铠侠股价一度暴跌14%，较上月高点下跌51%，市值至少蒸发29.5万亿日元（1817亿美元）。受人工智能热潮推动，市场对内存和数据存储的需求激增，6月中旬，铠侠股价年内飙升超过600%，市值超越丰田汽车。但此后，其市值排名已降至日本第四大公司。
投资者正更加密切地关注全球芯片制造商，他们质疑大规模人工智能投资的回报是否足以支撑其高估值。周四，美国芯片巨头指数下跌超过4%。
近几个月来，交易员对人工智能的态度变得更加谨慎，纷纷抛售与之相关的股票，转而投资于表现落后的板块。
分析师依然看好铠侠，预测其未来一年的回报率约为118%。此外，预计10月东证指数的调整将带来大规模被动资金流入。
但如果跌势加剧，日本散户投资者的杠杆仓位令铠侠面临进一步下行风险。一些投资者认为，股东贝恩资本的退出是半导体周期和该股上涨行情可能接近顶峰的信号。
责任编辑：王永生
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