BlockBeats News, December 31, the U.S. Securities and Exchange Commission (SEC) has initiated a review process of the proposed amendment to Rule 5.4 submitted by the Chicago Board Options Exchange (Cboe) to determine whether to approve the adjustment of the minimum quote increment for Cboe Mini Bitcoin ETF Index (MBTX) options. The proposal plans to set the minimum quote increment for option series with a transaction price below $3 to $0.01 and for series with a transaction price of $3 and above to $0.05.Currently, the SEC is soliciting public feedback on the proposal, with a deadline of January 21, 2026. Cboe stated that the proposal aims to align the MBTX options with the quoting granularity of the BlackRock iShares Bitcoin Trust (IBIT) options, narrowing the bid-ask spread through finer pricing.

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