美股期权交易再“升级”。1月26日起，纳斯达克将允许9只标的新增周一和周三为期权到期日，其中包括“科技七巨头”、博通及IBIT（比特币ETF），它们是首批获准加入短期期权计划的合格证券。
合格证券是指符合以下条件的个股或ETF：
(1) 其标的证券（以上一季度末的收盘价计算）满足以下条件：(A) 个股的市值超过7000亿美元（基于收盘价），或 (B) 交易所交易基金份额的管理资产规模（AUM）（基于净资产值计算）超过500亿美元。
(2) 上一季度末前一个月的期权交易量超过1000万份。
(3) 持仓限额至少为25万份合约；以及 (4) 参与SEC推出的“最小变动价位计划”。
合格证券的到期日不会与收盘后发布的财报发布日重合。每个季度，上述标准将重新评估，以确定该证券是否符合下一季度的合格证券资格。每个季度，ISE都会在其网站上公布符合上述标准的合格证券清单。
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