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Options Order and Position Limits
Example: A user wants to place a buy order for BTCUSD-191227-7500-C and the following is his current order status: No. Contract Name Order No. of Contracts 1 BTCUSD-191227-7500-C Buy 30 2 BTCUSD-191227-7500-P Sell 2 3 BTCUSD-191227-7500-C Sell 1 4 BTCUSD-191227-8000-C Buy 3 He has already placed 2 orders (Order 1 and 3) for BTCUSD-191227-7500-C. As the total number of orders has not exceeded the limit, he can place a new buy order.Published on 10 Dec 2019Updated on 1 May 2026Product documentationOption Margin
* Margin Factor + Mark Price c * Margin Factor * index price + Mark Price MMR (Short Put) max(c, c * Mark Price) * Margin Factor⁴ + Mark Price max(c * index price, c * Mark Price) * Margin Factor⁴ + Mark Price Index Coin-Margined BTCUSD Coin-Margined ETHUSD USDⓈ-margined BTCUSD USDⓈ-margined ETHUSD a 0.1 0.1 0.1 0.1 b 0.15 0.15 0.15 0.15 Min Open Order Margin 0.1 0.1 0.1 0.1 c 0.03 0.05 0.03 0.05 Margin Factor https://www.okx.com/trade-market/position/option Note: ¹ Long options do not require IMRPublished on 20 June 2022Updated on 1 May 2026Product documentationIntroduction to options margin calculation
The current mark price of "BTCUSD-20200327-6000-C" is 0.0575 BTC, while you place an order at 0.06 BTC. The mark price of BTCUSD-20200327 futures with the same expiry date is $5,900, then the OTM value is $6,000 - $5,900 = $100.Published on 16 Dec 2020Updated on 13 Apr 2026Product documentationTiered maintenance margin ratio rules
= Configuration item* Type Formula Others Call option C × Margin factor × Face value × Contract multiplier × Number of liquidated positions C = Configuration item Put option Max (C, C × Option mark price) × Margin factor × Face value × Contract multiplier × Number of liquidated positions 1.4 Liquidation process The forced liquidation process will vary based on the account mode and position mode.Published on 16 June 2022Updated on 13 Apr 2026Product documentationADL mechanism enhancements
The 8 Hr Average is USD 400,000; C. 30% of the 8 Hr Average is USD 120,000 (since this is a number that is larger than USD 50,000, trigger 1(a)(i) above would be used, not trigger 1(a)(ii)). Then, since USD 200,000 is less than the Volatile Drop Threshold of USD 280,000 (i.e. USD 400,000 - USD 120,000), ADL would be triggered. ADL Cessation Condition: 1. When the Applicable Insurance Fund has increased above 75% from the peak within last 8 hours; 2.Published on 5 Mar 2025Updated on 17 Nov 2025AnnouncementsWhat's OKX NFT Marketplace?
NFT Marketplace OKX NFT Marketplace is an NFT trading platform that works seamlessly with over 10 networks, including Ethereum, Solana, OKTC, Polygon, BNB Chain, Avalanche C, Immutable X, Aptos, Arbitrum One, Optimism, Klaytn, Arbitrum Nova, and zkSync Era. Opening NFT Marketplace pageLaunchpad OKX NFT Launchpad holds regular events that bring opportunities to trade quality NFTs.Published on 22 Aug 2023Updated on 12 Sept 2025FAQ65Cosmos (ATOM) Now Available
Total Supply and Allocation Total supply: 236,355,290 ATOM C. Useful Links Official Website: https://cosmos.network White Paper: https://cosmos.network/resources/whitepaper Block Explorer: https://cosmos.bigdipper.live Risk Warning: Trading digital assets involves significant risk and can result in the loss of your invested capital.Published on 23 Apr 2019Updated on 17 Nov 2025AnnouncementsTrading Mechanism
× (P × (1 − P)) Maker fee = K2 × C × (P × (1 − P)) Settlement Fee Formula For the winning side: K1*1% For the losing side: no settlement fee (Please refer to the fee schedule link for specific values.)Published on 8 Apr 2026Updated on 16 Apr 2026Product documentationP2P Africa Christmas campaign: Win up to 150 USDT
Each promotional day starts at 12:00 (UTC+1) and ends at 11:59 (UTC+1) c. Each reward is capped at 30 USDT d. The rewards will be distributed in USDT e. Rewards will be distributed within 21 days after the campaign period ends Rewards distribution for Promotion B: a. Only 3 merchants who traded with the highest number of unique counterparties during the campaign will be rewarded b. The rewards will be distributed in USDT c.Published on 19 Dec 2023Updated on 17 Nov 2025AnnouncementsOKX Options Introduction
BTC-USD-241231-50000-C underlying-USD_UM-expiration date-strike-type, e.g. BTC-USD_UM-241231-50000-C Expiry Time expiry time at 8:00 (UTC+0) on the expiration date. expiry time at 8:00 (UTC+0) on the expiration date. Creation Time Options with new expiration date are created at 8:30 UTC. Options with new expiration date are created at 8:30 UTC.Published on 5 Sept 2023Updated on 30 Apr 2026Product documentationIntroduction to Options Expiration Dates
When there is no overlap of expiration dates, a. 4th-daily options will be generated on a daily basis b. 3rd-weekly will be generated every Friday c. 3rd-monthly will be generated every third to last Friday of the month d. 3rd-quarterly will be generated on the third to last Friday of every quarter e. 4th-quarterly will be generated on the last Friday of every quarter When there are overlapping expiration dates, The existing options will be options with different expiration dates at the same timePublished on 5 Sept 2023Updated on 30 Apr 2026Product documentationOKX releases the OKX AI Robot NFT Collection
The NFT needs to have OKX's brand elements c. The NFT needs to have some robot elements Below is a potential Robot NFT that's eligible for this contest. We welcome you to join us with your artwork! Winners will get these rewards: OKX NFT will launch a collection [OKX AI Robot], which curates up to 1,000 NFTs that've stood out in the contest. We'll airdrop the artwork to their creators. OKX will introduce utility and other benefits to OKX AI Robot in the future.Published on 10 May 2023Updated on 17 Nov 2025AnnouncementsNotice on OKX Event Contract Fee Update
Indicative Fee Table (C = 100, K1 = 0.045, K2 = −0.009) Price (P) Trade Value (USDT) Taker Fee (USDT) Maker Rebate (USDT) 0.01 1.00 0.0446 -0.0089 0.05 5.00 0.2138 -0.0428 0.10 10.00 0.4050 -0.0810 0.15 15.00 0.5738 -0.1148 0.20 20.00 0.7200 -0.1440 0.25 25.00 0.8438 -0.1688 0.30 30.00 0.9450 -0.1890 0.35 35.00 1.0238 -0.2048 0.40 40.00 1.0800 -0.2160 0.45 45.00 1.1138 -0.2228 0.50 50.00 1.1250 -0.2250 0.55 55.00 1.1138 -0.2228 0.60 60.00 1.0800 -0.2160 0.65 65.00 1.0238 -0.2048 0.70 70.00 0.9450Published on 29 Apr 2026Updated on 29 Apr 2026AnnouncementsRewrite The System KOL terms and conditions
(C) 2023 OKX. All rights reserved.Published on 15 May 2023Updated on 17 Nov 2025FAQ21Spot index prices
C. If not all exchanges are offering valid data, then data taken from each exchange will be ordinarily weighted as follows.* When data from 3 or more exchanges are available, they will be weighted by their pre-set weighted values. If an exchange’s price deviates more than 2% from the median price of the rest of the exchanges, that exchange’s price will be taken at 98% or 102% of the median, depending on whether it’s too high or too low.Published on 16 June 2022Updated on 13 Apr 2026Product documentation