BlockBeats 消息，12 月 31 日，美国证券交易委员会（SEC）已对芝加哥期权交易所（Cboe）提交的关于修改 Rule 5.4 规则的建议启动审查程序，以决定是否批准调整 Cboe Mini 比特币美国 ETF 指数（MBTX）期权的最小报价增量。该提议计划将成交价格低于 3 美元的期权系列最小报价单位设定为 0.01 美元，成交价格在 3 美元及以上的系列设定为 0.05 美元。
目前 SEC 正就该提议征求公众意见，截止日期为 2026 年 1 月 21 日。Cboe 表示，提案目标使 MBTX 期权与贝莱德 iShares Bitcoin Trust（IBIT）期权的报价粒度对齐，通过更精细的定价缩小买卖价差。
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