Cboe Updates Trading Halts: Pause Button Gets a Tweak
Published Date: 9/15/2026
Notice
Summary
No summary available.
Analyzed Economic Effects
3 provisions identified: 3 benefits, 0 costs, 0 mixed.
Mandatory Halts for Issuer Corporate Actions
If you hold or trade a security listed on Cboe BZX that is subject to certain issuer corporate actions, the Exchange will impose a mandatory regulatory halt after the end of the After Hours Trading Session and before 9:00 p.m. ET on the day immediately preceding the market effective date. This halt requirement applies when BZX is the security's Primary Listing Market and is intended to allow coordinated processing under the Exchange's proposed 23/5 Trading rules.
Which Corporate Actions Trigger Halts
The rule lists nine corporate-action types that will trigger mandatory halts when BZX is the Primary Listing Market: (1) trading symbol changes; (2) CUSIP changes; (3) stock dividends with aggregate value per share equal to at least 25% of the Official Closing Price; (4) forward and reverse stock splits; (5) De-SPAC transactions; (6) spin-offs; (7) security-type changes; (8) mergers/mandatory exchanges; and (9) other issuer events the Exchange determines require a halt.
Trading Resumes with 8:00 a.m. Halt Auction
Securities halted under this rule would resume trading with a Halt Auction at 8:00 a.m. ET on the market effective date, in advance of the 9:30 a.m. ET Opening Auction. The Exchange proposes this timing as part of its 23/5 Trading operations that are anticipated to commence on December 6, 2026.
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