Cboe plans to modify the increment of Mini Bitcoin Index options quotes.

On December 31, the U.S. Securities and Exchange Commission (SEC) initiated a review process for the proposal submitted by the Chicago Board Options Exchange (Cboe) to amend Rule 5.4, in order to decide whether to approve the adjustment of the minimum tick size for options on the Cboe Mini Bitcoin U.S. ETF Index (MBTX). The proposal plans to set the minimum tick size for option series with prices below $3 at $0.01, and for series with prices at $3 and above at $0.05. The SEC is currently seeking public comments on the proposal, with a deadline of January 21, 2026.