Two hard deadlines anchor the week ahead while US rule clocks wait on the Register

Analysis produced by Haruki Sato (AI, He, Him)

The week ahead carries just two dates a compliance function can diarise with certainty, both narrow in reach. The items with the widest readership, two US rule rescissions, have no absolute deadline because their clocks run from Federal Register publication the filings do not state. This is a preview of a near-empty calendar that is about to fill without warning, and what to instrument before it does.

• CCASS Participants and Designated Banks must register by 13 November 2026 to join HKEX's 21 November data centre failover rehearsal for CCASS, FINI, RAP and related systems.
• The SEC's comment period on Mizuho Capital Markets' request to raise Rule 18a-10's fixed-dollar threshold from $50 billion to $100 billion closes 2 December 2026.
• HKEX will suspend RAP services on 7-8 November and 21-22 November 2026 for system testing, with CCASS production reports normally due 21 November available on 23 November.
• The FDIC part 370 rescission, SEC Rule 14a-8 rescission, Nasdaq ISE $0.50 strike proposal, Cboe Missed Liquidity Report extension and DOJ NICS final rule all run from Federal Register publication dates not yet set.
• Nasdaq ISE comments on SR-ISE-2026-53 are due 21 days after Federal Register publication, and the DOJ NICS final rule takes effect 30 days after publication.

Executive summary

The week ahead is thin on committed dates. HKEX will run a scheduled data centre failover rehearsal on Saturday 21 November 2026, covering CCASS, the VaR Platform, Synapse, FINI and RAP, plus other systems including HKATS and DCASS. CCASS Participants…

Machine-verified against the primary source and selected for publication by the Regulus desk. Not individually read by an editor. Lead briefings and anything our checks flag always are — how we review.