台积电(TSM.US)盘前跌超2.3%，报236美元。消息面上，数据显示，7月台积电ADR较其台股平均溢价24%，高于过去十年的均值7.4%，创自2009年4月以来的最高水平，引发市场对人工智能热潮可能过热的担忧。 投资研究公司Zero One执行董事Vincent Fernando表示，投资者关注台积电在全球AI供应链中的关键角色，显著推高了对其ADR的需求。同时，ADR的供给相对固定、新增发行空间有限，转换操作也变得更为困难，这导致ADR溢价的交易区间不断扩大。(格隆汇)
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