To prevent the market from malicious manipulation, HTX Futures limits the position-opening and closing price of all USDT-margined contracts. The specific rules are as below:

• Take BTC as an example:

[Searching price limit on more types of contract and trading pairs]

[The above data and indicators may be adjusted in real time according to market conditions, and adjustments will be made without further notice]

1. Assume for BTC/USDT swaps, the non-basis price limit range is ±4%, normal hard price limit range is ±6%, and the basis price limit range is ±2%;

Within 10 minutes of BTC/USDT swaps generation (No basis price limit):

Highest bid price = min [spot index * (1 + 6%), spot index * (1 + 4%)]

Lowest ask price = max [spot index * (1 - 6%), spot index * (1 - 4%)]

10 minutes after BTC/USDT swaps contract is generated: (Basis price limit):

Highest bid price = min [(Basis average of the past 10 minutes + spot index) * (1 + 2%), spot index * (1 + 6%)]

Lowest ask price = max [(Basis average of the past 10 minutes + spot index) * (1 - 2%) , spot index * (1 - 6%)]

2. Assume for BTC/USDT quarterly futures, the non-basis price limit range is ±4%, normal hard price limit range is ±15%, and the basis price limit range is ±3%;

Within 10 minutes after USDT-margined quarterly futures is generated (Non basis price limit):

Highest bid price = min [spot index * (1 + 15%), spot index * (1 + 4%)]

Lowest ask price = max [spot index * (1 - 15%), spot index * (1 - 4%)]

10 minutes after USDT-margined quarterly futures is generated: (Basis price limit):

Highest bid price = min [(Basis average of the past 10 minutes + spot index) * (1 + 3%), spot index * (1 + 15%)]

Lowest ask price = max [(Basis average of the past 10 minutes + spot index) * (1 - 3%), spot index * (1 - 15%)]

Rules above apply to both opening and closing positions. If users open long or close short, hard price limit will be triggered when the order price is higher than the highest bid price; if users open short or close long, hard price limit will be triggered when the order price is lower than the lowest ask price.

Price limit before the delivery

The system will implement special price limits on each USDT-margined weekly futures, in which price limit range is ±1% within 10 minutes before the delivery.

Assume for BTC/USDT Weekly futures, the normal hard price limit is ±6%, and the price limit range within 10 minutes before the delivery is ±1%;

Highest bid price = min [spot index * (1 + 1%), spot index * (1 + 6%)]

Lowest ask price = max [spot index * (1 - 1%), spot index * (1 - 6%)]