HKEX client margin framework changes will roll out in two phases, with the exchange saying the update will improve capital efficiency and lower funding costs in its derivatives clearing houses.
Hong Kong Exchanges and Clearing Limited said Phase 1 is set for 21 September 2026. Phase 2 is targeted for March 2027, subject to regulatory approval. The exchange said the staged rollout will help firms prepare their systems and adjust risk management in an orderly way.
Under the revised plan, HKEX will cut the client initial margin multiplier from 1.33 times the clearing house margin level. It will fall to 1.2 times in Phase 1. Then it will drop again to 1.1 times in Phase 2.
HKEX Client Margin Framework Details
Client maintenance margin for derivatives will also change. However, stock options are excluded from that step. HKEX said the maintenance margin requirement will move to 1.0 times the clearing house margin in both phases.
Vanessa Lau said the update marks the latest microstructure enhancement from HKEX. She said the revised framework improves collateral efficiency and keeps risk controls strong. She added that the changes should help market participants use capital more efficiently, cut costs, and better manage hedging, trading, and portfolio activity.
Rollout Aims to Support Market Readiness
HKEX said the changes support the long-term growth of Hong Kong’s derivatives market. Additionally, the exchange said the new setup brings its client margin multiplier closer to levels used in other major international markets. It said that alignment supports Hong Kong’s position as a global risk management centre.
Market participants will still be able to set higher margin requirements. They can do that based on each client’s risk profile and current market conditions.
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