USDT-margined contract PnL of long positions = Contract size × |Number of contracts| × Multiplier × (Last price - Average entry price) PnL of short positions = Contract size × |Number of contracts| × Multiplier × (Average entry price - Last price) 3.

Margin mode of single currency account Profit and loss Long margin with base crypto, PnL is quoted with base crypto (using Mark price and Last price) Mark price PnL = Assets in position - (Debt + Interest) / Mark price Last price PnL = Assets in position - (Debt + Interest) / Last price Long margin with quote crypto, PnL is quoted with quote crypto (using Mark price and Last price) Mark price PnL = Assets in position * Mark price - (Debt + Interest) Last price PnL = Assets in position * Last price

Monthly Expiries The monthly options will expire the last Friday of the month at 08:00 UTC. A new monthly expiry will be launched on the 3rd to last Friday of each month at 08:30 UTC. A monthly expiry will not be added if it already exists as a monthly/quarterly expiry. Quarterly Expires 3, 6, and 9 months quarterlies of the March, June, September and December cycle. The quarterly options will expire on the last Friday of each calendar quarter at 08:00 UTC.

The affected Open API endpoints are: Endpoint name Endpoint path Order details GET /api/v5/trade/order (Only affects canceled and filled orders) Transaction details (last 3 days） GET /api/v5/trade/fills Transaction details (last 3 months) GET /api/v5/trade/fills-history Get bills details (last 7 days) GET /api/v5/account/bills Get bills details (last 3 months) GET /api/v5/account/bills-archive Order history (last 7 days) GET /api/v5/trade/orders-history Order history (last 3 months) GET /api/v5/trade

buy × Amount + Price of last buy × Amount) / Net buying amount PnL = (Last price – Cost price) × Net buying amount PnL Ratio = (Last price – Cost price) / Cost price

Price movement average within the last 10 minutes is calculated as follows: Using the candlestick chart data of the contract and spot index within the last 10 minutes to calculate the (opening price + closing price)/2 of every minute, then calculate the difference between the contract and the index, then take the average value from the difference between the two within the last 10 minutes.

income (past 12 months) Accountant Letter Issued within the last 3 months with business ownership confirmation Distribution Record Shows recent profit withdrawals or distributions Others Issued within the last 3 months with compensation or business ownership confirmation Investment returns Investment Account Statement Issued within the last 3 months Retirement Account Statement Issued within the last 3 months Brokerage Statement Issued within the last 3 months Bank Statement Shows investment income

SUNUSDT、SUNUSD Perpetual： Within 10 minutes after the contracts launched: Max. bid price = Spot index (1 + 0.5%); Min. ask price = Spot index (1 – 0.5%) Contracts launched 10 minutes later: Max. bid price = Min [Max (Index, Index*1.06 + price movement average within the last 10 mins), Index*1.12]; Min. ask price = Max [Min (Index, Index*0.94 + price movement average within the last 10 mins), Index*0.88] 2.

Moreover, the component indices of BTC, ETH, BCH and ETC are also adjusted: XRP: Weighted average of the last XRP/BTC prices of Bittrex, Poloniex, Bitfinex and OKX EOS: Weigthed average of the last EOS/BTC prices of Bitfinex, OKX and Bithumb BTG: Weighted average of the last BTG/BTC prices of Bitfinex and OKX ETH: Adding the ETH/USD price of GEMINI exchange as index constituent BTC: Adding the BTC/USD price of GEMINI exchange as index constituent BCH: Adding the BCH/BTC prices of Bittrex and OKX

Friday of month at 8:00 am (UTC) Quarterly: the last Friday of calendar quarter at 8:00 am (UTC) Weekly: Friday at 8:00 am (UTC) Quarterly: the last Friday of calendar quarter at 8:00 am (UTC) Listing time New futures will be listed at 8:00 am (UTC).

Starting from July 1, we will stop supporting the subscription and auto-renewal of Shark Fin products, according to the following schedule: For 1-day Shark Fin: The last chance to subscribe is before 9 am UTC on July 4. Auto-renewal is not supported. For 3-day Shark Fin: The last chance to subscribe is before 12 pm UTC on July 1. Auto-renewal is not supported. For 7-day Shark Fin: The last chance to subscribe is before 12 pm UTC on July 4. Auto-renewal is not supported.

Dear valued customers, Due to recent volatility in ETH, EOS, LTC and other currencies, we will adjust the Perpetual Swap price limits as follows: BTC First 10 minutes of all newly listed contracts: Upper Limit = Spot Index Price x (1 + 0.5%) Lower Limit = Spot Index price x (1 - 0.5%) After 10 minutes: Upper Limit = Average Basis within last 10min + Spot Index Price x (1 + 1%) Lower Limit = Average Basis within last 10min + Spot Index Price x (1 - 1%) Basis = Contract Price - Spot Price If the price

Weekly futures contract delivery price: The last traded price of the weekly futures contract after the rollback. Bi-weekly futures contract delivery price: The last traded price of the bi-weekly futures contract after the rollback. Quarterly futures contract delivery price: The last traded price of the quarterly futures contract after the rollback. 3. After delivery, new contracts with delivery dates "0406", "0413" and "0629" of all the tokens will be generated. 4.

During the migration, you will only be able to check the futures trading bills of the last 15 days. We expect that the data migration will take approximately one week. After the migration is completed, the futures trading bills of the last 3 months will be able to be retrieved. We apologize for the inconvenience caused. If you experience any problems, please email our customer support at Support Center. Regards, OKX Jul 27, 2018

10 mins），Index*1.2)； Min.ask price= Min (Max（Index，Index*0.9+ price movement average within the last 10 mins），Index*0.8) Max. bid price=Min (Max（Index，Index*1.06+ price movement average within the last 10 mins），Index*1.15)； Min.ask price = Min (Max（Index，Index*0.94+ price movement average within the last 10 mins），Index*0.85) The funding rate rules will be adjusted as follow: Before adjustment After adjustment Funding rate=Clamp(MA((（Best Buy Price + Best Sell Price）／2-spot index price)／spot index