2.1 Calculate the mark price of Futures and Perpetual Mark price = Index price + Basis of moving average Basis of moving average = Moving average of (Mid price of contract - Index price) = Moving average of [(Best ask of contract + Best bid of contract) / 2 - Index price] Note: USDT-margined, USDC-margined and crypto-margined contracts refer to the index price of base currency as their index price. E.g.

Formula of price limit: Period Max Buy Price Min Sell Price Within 10 minutes after the contracts launched Index *(1+X) Index *(1-X) Contracts launched 10 minutes later Min[Max(Index, Index *(1+Y)+ price movement average within the last 10 mins), Index *(1+Z)] Max[Min(Index, Index *(1-Y)+ price movement average within the last 10 mins), Index *(1-Z)] 2.

Asset Overview Spot Cost Price Definition: A weighted average of the cost prices and quantities across the Trading Account, Funding Account, and Earn Account. Transfers between these accounts do not affect the cost price. Example: If the Asset Overview shows 1 ETH with a cost price of 3000, and this ETH is transferred from the Funding Account to the Trading Account, the Asset Overview cost price remains 3000.2.

Price limit is one of the important risk control methods to protect investors and prevent the market from being manipulated. If there is no price limit, a few traders can make the contract price fluctuate greatly and create a large apportionment, by using a small amount of funds and a high leverage level.

What is a spot index price? Spot Index price aims to measure the price of an underlying cryptocurrency. OKX’s USDT-margined contracts are denominated in USDT index price, USDC-margined contracts are denominated in USDC index price, while coin-margined contracts use the USD-equivalent spot index price of the underlying cryptocurrency.

Funding fee for perpetual futures In perpetual futures, if the equity of a crypto is insufficient to cover the funding fee when it is collected, potential borrowing will incur. Assume your account has 10,000 USDC and a BTC-USDT perpetual contract cross-margin position. When the funding fee is collected, 10 USDT is deducted from your balance. Your USDT equity becomes –10 USDT and liability of 10 USDT is incurred.

“Available” in “Sell BTC” shows you the current BTC balance you can sell, while "Max sell" shows you the amount of USDT obtained after selling BTC based on the last price of BTC/USDT. Enter an appropriate BTC purchase price and amount, and click “Buy BTC” to place the order. (Likewise for selling) Your buy/sell orders can be viewed on the Open Orders and Order History lists.

The margin call losses caused by the difference between the bankruptcy price and transaction price will be shown in the forced-liquidation list. b.The margin call losses caused by liquidated positions after price changes will be cleared with the margin call losses from unfulfilled liquidated positions altogether. The total loss will be compensated by the insurance fund.

Initial: Funding account 5,000 USDT Flexible/Fix Loan: user stakes 5,000 USDT to borrow 0.1 BTC Comparison between user assets after the loan and snapshot data: Account equity Snapshot Initial assets 5,000 USDT Loan User puts down 5,000 USDT as collateral to borrow 0.1 BTC Borrowed loan? Funding account: 0.1 BTC Grow account: 3,422.46 USDT Note: This is a user's collateral equity.

Following a sharp rise in its price beginning in early November 2024, the token experienced an initial sudden and substantial price decline of more than 80% across the market at approximately 2:28:32am (UTC+8) on April 14, 2025 ("Market Event"). We observed that substantial trading volume spikes and price decline initially happened across various centralised exchanges outside of OKX, before spreading to the overall market.

Future changes to the cost price resulting from spot trading will also be based on the edited cost price. For example: If your trading account holds 1 BTC with a cost price of 60,000, and you transfer another 1 BTC from your funding account, your trading account will now hold a total of 2 BTC. If you then edit the cost price to 61,000, the cost price of the 2 BTC in your trading account will be updated to 61,000.

Adjustment rules and calculation parameters Account adjustment for eligible users (to be determined at OKX's sole discretion) will cover the price difference loss, as calculated by OKX, that resulted from forced selling of OKB at a lower price during a liquidation and any liquidation penalties and transaction fees associated with the liquidation.

Assuming the order book is as below: According to the predefined price range, the highest buy price equals the Best Bid Offer (BBO), which is 10029.99*(1+price range 1.0%) = 10130.29 USDT. The total amount of sell orders below 10130.29 USDT is 570+1+200+1+1+1+1=775，and multiply the random number between 0.5 to 1 (e.g., 0.63) to get the order amount=775*63%=488.25 contracts.

If you copy a lead trader but don’t use the Buy existing assets feature, when the lead trader sells those assets, you won’t copy their sell order.When will my funds be released after ending a copy trade? For Spot Smart Sync, you'll need to stop following the trader before your funds are released.

These calculations are to avoid liquidations caused by a sudden change in the account risk level after the open order is filled. mgnRatio in the details array Total equity The fiat value of all cryptocurrencies in the your account. Total equity = Sum (Crypto equity × Crypto price) The crypto price is based on the USD price of the crypto on OKX. If a crypto does not have a USD price, we will calculate using the spot price of the USDT pair of the crypto multiplied by the price of USDT/USD on OKX.