Frequently Asked Questions

HKMEx’s customer service operating hours are between 07:00 and 23:45, Mondays through Fridays.

HKMEx is closed on Saturdays, Sundays and Hong Kong public holidays.

Please refer to Trading & Clearing - Calendar

Please refer to Products  for all HKMEx listed products.

Please refer to Products - Contract Specifications  for all HKMEx listed products.

Trading sessions are:

1. Pre-opening session – for outright contracts only
2. Continuous trading Session
3. Closing session

Trading hours are as follows:

1. 07:30 – 08:00 – Pre-opening session
2. 08:00 – 22:55 – Continuous trading session
3. 22:55 – 23:00 – Closing session

Monday to Friday (Normal Business Days)

Please refer to Trading & Clearing - Adverse Weather Arrangements

Monday to Friday (Normal Business Days)

Please refer to Trading & Clearing - Adverse Weather Arrangements

Please refer to Trading & Clearing - Calendar

There is no time priority during pre-opening session. Trade allocation at open auction is on a pro-rata basis. Please note that first-come, first-serve does not apply.

The priority is price priority first, followed by time priority. If there is only one matching price in the market, price will have the highest priority. If there are two orders come with the same price, first-come, first-serve time priority is in place.

The opening price is equivalent to the auction price generated at the end of the pre-opening session, based on the HKMEx auction algorithm.

The opening price will be the first traded price done in the market on that day.

The closing price is the last traded price of the specific contract on that day.

HKMEx settlement prices are based on the volume weighted average price (VWAP) of trades matched during the closing session when there is sufficient volume.

The HKMEx presidential designee determines an adjusted settlement price based on appropriate market information.

Block trades executed during trading hours must be reported within 10 minutes of execution.

Block trades executed during non-trading sessions must be reported within 10 minutes after the market opens on the next trading day.

Both HKMEx trading members to a transaction must report a block trade.

The factors include:

• Size of the block trade
• Prevailing high/low price of the contract at the time of execution
• Prices and sizes of other transactions in the same contract at the relevant time, and in other relevant markets.

Error trades can be reported between 08:00 and 23:10 HKT on each trading day.

Submissions should be made no later than within 10 minutes of the trade execution time.

HKMEx will only accept a request from the originating party of the claimed error trade.

The reporting hours for EFP/EFS is 08:00 – 23:00 HKT, on the day before or on contract’s last trading day (LTD) or 08:00 – 14:00 HKT, trading day on the contract’s LTD + 1.

All HKMEx members can be the reporting party.

The buyer and seller shall not be the same party.

1. The registration price of the futures position should be within the day high/low price range of the futures contract in question.
2. If the registration price falls outside this range, the member should provide justification that the price is commercially reasonable.

The quantity specified in the underlying physical transactions must NOT deviate by more than 5% of the contract size of the futures positions exchanged.

Please refer to LCH.Clearnet Margin Rate Circulars for HKMEx products.