If clients place enhanced limit order (ELO), all the orders will be automatically sent to Stock Exchange until the pre-open session (09:20 am) as at- auction limit order (ALO). After matching (09:20-09:22) session, unfilled at-auction limit orders will be carried forward to Continuous Trading Session (“CTS”) as limit orders. Upon the end of CTS, any outstanding orders within permissible price limit will be automatically carried forward from CTS to Closing Auction Trading Period (CAS) as at- Auction Limit order(ALO). If the at- Auction Limit order(ALO) still being unfilled during CAS, the orders will be cancelled.
*The above also applies to all enhanced limit orders (ELO) being placed within 0900-0920
Please click here to learn more about the HKEx trading mechanism and the description of HK stock order types