Dear customers, OKEx will adjust the margin calculation in Portfolio Margin mode on 24 December 2021, details below: 1. Scaling-factor logic will now be only applied on MR7, the liquidation cost module of derivative risk units. 2. For the liquidation cost of individual derivative risk unit, the scaling-factor logic adopts a tier-based (tier division is according to raw margin) calculation: only incremental amount of the raw margin from the previous tier will be adjusted based on the next tier correspondingly. See the e.g as illustration for details. 3. The underlying assets are classified based on their risk and liquidity and are grouped into 3 sets of scaling tier, indicated per the 3 tables below. Scaling Tier 1: This tier includes the following risk-units: Coin-margined USDT-margined BTC-USD BTC-USDT ETH-USD ETH-USDT Tier config: Tier Range of the raw margin (in USD) Multiplier 1 [0 ~10,000] 1 2 (10,000 ~70,000] 2 3 (70,000 ~17,000] 4 4 (17,000 ~27,000] 6 5 (10,000 ~10,000] 8 6 (10,000 ~10,000] 10 7 (10,000 ~10,000] 12 For illustration: The raw margin of a user's BTC-USD risk unit per below MR = max(MR1,MR2,MR6)+MR3+MR4+MR5=40,000 USD; MR7_raw=30,000 USD;   Before scaling-factor adjustment: MMR of this risk unit is max(MR, MR7_raw) = 40,000 USD;   After scaling-factor adjustment: MR7_adj = 10,000 + (30,000-10,000)2 = 50,000USD; MMR of this risk unit is max(MR, MR7_adj) = 50,000 USD.   Scaling Tier 2: This tier includes the following risk-units: Coin-margined USDT-margined LTC-USD LTC-USDT BSV-USD BSV-USDT TRX-USD TRX-USDT BSV-USD BSV-USDT LTC-USD BSV-USDT DOT-USD DOT-USDT XRP-USD XRP-USDT ETC-USD ETC-USDT EOS-USD EOS-USDT FIL-USD FIL-USDT ADA-USD ADA-USDT BCH-USD BCH-USDT LINK-USD LINK-USDT Tier config: Tier Range of the raw margin (in USD) Multiplier 1 [0 ~7,000] 1 2 (7,000 ~16,000] 2 3 (16,000 ~29,000] 3 4 (29,000 ~43,000] 4 5 (43,000 ~69,000] 5 6 (69,000 ~95,000] 6 7 (95,000 ~121,000] 7 8 (121,000 ~147,000] 8 9 (147,000 ~ +∞) 9 For illustration: The raw margin of a user's LTC-USD risk unit per below MR = max(MR1,MR2,MR6)+MR3+MR4+MR5=20,000 USD; MR7_raw=15,000 USD;   Before scaling-factor adjustment: MMR of this risk unit is max(MR, MR7_raw) = 20,000 USD;   After scaling-factor adjustment: MR7_adj = 10,000 + (30,000-10,000)2 = 23,000USD; MMR of this risk unit is max(MR, MR7_adj) = 23,000 USD. Scaling Tier 3: This tier includes all other risk-units that are not listed in tier 1 and 2. Tier config: Tier Range of the raw margin (in USD) Multiplier 1 [0 ~3,000] 1 2 (3,000 ~8,000] 2 3 (8,000 ~14,000] 3 4 (14,000 ~19,000] 4 5 (19,000 ~27,000] 5 6 (27,000 ~36,000] 6 7 (36,000 ~45,000] 7 8 (45,000~54,000] 8 9 (54,000 ~63,000] 9 10 (63,000 ~72,000] 10 11 (72,000 ~81,000] 11 12 (81,000 ~90,000] 12 13 (90,000 ~+∞) 13 For illustration: The raw margin of a user's ETC-USD risk unit per below MR = max(MR1,MR2,MR6)+MR3+MR4+MR5=20,000 USD; MR7_raw=13,000 USD;   Before scaling-factor adjustment: MMR of this risk unit is max(MR, MR7_raw) = 20,000 USD;   After scaling-factor adjustment: MR7_adj = 3,000 + (8,000-3,000)2 + (13,000-8000)3 = 28,000USD; MMR of this risk unit is max(MR, MR7_adj) = 28,000 USD.   Risk disclaimer: Due to recent market volatility, the maintenance margin rate may change after the new scaling logic is applied. To prevent forced liquidations caused by these adjustments, users are encouraged to decrease risks by either increasing margins or closing positions.   OKEx reserves the right to take emergency actions during unexpected events. Any actions and related progress will be communicated via announcements and emails. For any inquiries regarding this upgrade, please feel free to contact us in the official OKEx Telegram group or via the Support Center. OKEx, Dec. 21, 2021   Click here to download the OKEx mobile app >>> Click here for the official OKEx Twitter account >>> Click here to join the official OKEx Telegram community >>>