OKX to convert pre-market futures to standard perpetual futures for ZBT crypto

We are pleased to announce that ZBT premarket futures will be converted to standard perpetual futures at 1:00 ～ 4:00 pm UTC on October 17, 2025.

This update covers both the web and app interfaces as well as the API. The details are as follows:

Features	Details
Underlying	ZBT/USDT index
Settlement crypto	USDT
Face value	1
Price quotation	1 ZBT value calculated in USDT equivalent
Tick size	0.0001
Leverage	0.01-20x
Funding rate	clamp [Average premium index clamp (Interest rate – Average premium index, 0.05%, -0.05%), 1.50%, -1.50%] For average premium index and interest rate calculations, refer to our product documentation
Funding interval	4 hours If the funding rate of a perpetual future reaches the funding fee cap or floor when funding fee is charged or paid, the perpetual’s funding fee settlement period will automatically be adjusted to hourly settlement. Learn more from our product documentation
Trading hours	24/7

Tiered position limits

Tier	Max open positions (Contracts)	MMR	IMR	Max leverage
1	20,000	2.00%	5.00%	20
2	40,000	3.00%	6.67%	15
3	60,000	4.00%	8.00%	12.5
4	Increase by 20,000 conts from the previous tier	Increase by 0.5% from the previous tier	Increase by 0.5% from the previous tier	Max. leverage of the tier