Overview of OKX USDT Delivery Contract Tiered Maintenance Margin System
OKX (formerly OKEX) exchange has introduced a tiered maintenance margin system for USDT delivery contracts. The core of this mechanism is to dynamically adjust maintenance margin requirements based on the user's position size. Its main goals are to effectively manage market risk, protect market liquidity, and prevent drastic market fluctuations that could be triggered by forced liquidation of large positions.
System Objectives and Operating Mechanism
The tiered maintenance margin system sets different maintenance margin requirements based on the size of a user's contract position. Specifically, the larger the user's position size, the higher the required maintenance margin rate, and the lower the maximum available leverage. This tiered management approach helps to diversify risk and prevent a single large position from causing excessive impact on the market.
The operating mechanism of this system includes:
- Risk Management: By increasing margin requirements for large positions, it reduces the impact of their potential liquidation risk on the overall market.
- Liquidity Protection: Reduces chain reactions caused by large-scale forced liquidations, maintaining market order and liquidity.
- Leverage Restriction: Limits the leverage multiple for large positions, prompting traders to manage risk more cautiously.
Liquidation Trigger Conditions and Risk Warning
Under OKX's tiered maintenance margin system, when a user's adjusted equity falls below the maintenance margin requirement, it means the account faces liquidation risk. The specific trigger conditions are as follows:
- When the account's maintenance margin rate reaches or falls below 100%, the system will trigger forced liquidation or forced partial deleveraging.
- In some cases, when the maintenance margin rate falls below 300%, the system will issue a warning, reminding users to pay attention to position risk and take timely measures.
OKX advises users to closely monitor their position risks, especially during periods of high market volatility or after platform rule adjustments. They should adjust high-risk positions in a timely manner by closing positions, reducing positions, or adding margin to avoid unnecessary forced liquidations.
Historical Adjustments and Optimizations
OKX has repeatedly adjusted the tiered rules for USDT margin perpetual/delivery contracts to adapt to market developments and user needs. These adjustments aim to increase user position limits, optimize market liquidity, and reduce platform risk. Important historical adjustments include:
- January 17, 2020: OKX adjusted the tiered rules for USDT margin perpetual/delivery contracts to increase user position limits and market liquidity.
- April 8, 2020: OKX further expanded the tiered rules for USDT margin perpetual/delivery contracts.
- April 22, 2021: OKX announced adjustments to the tiered rules for some USDT delivery contracts (e.g., ADAUSDT).
- October 31 to November 1, 2024: OKX adjusted margin position tiers and conversion rates to improve market liquidity and reduce risk, including increasing the maximum leverage to 10x for some trading pairs, increasing the maximum borrowing amount under the same leverage, and adjusting conversion rates based on position tiers.
- November 19, 2024: OKX adjusted the position tiers and minimum order quantity for several futures, including MAJORUSDT pre-sale contracts.
- March 23, 2025: OKX planned and adjusted the position tiers for full margin in simple mode, multi-currency mode, and portfolio margin mode for USDT margin.
- April 15, 2025: OKX planned and adjusted the margin position tiers and conversion rates for tokens such as ETH, BETH, and STETH.
- April 17, 2025: OKX planned and adjusted the margin position tiers for multiple trading pairs.
- February 27, 2026: OKX planned and adjusted the position tiers for multiple futures.
Relevant Data and Calculation Methods
Based on historical adjustment data, some key parameters of this system include:
- In the 2020 adjustments, the incremental value for each tier of maintenance margin rate and initial margin rate for each currency was 0.5%.
- The highest tier maintenance margin rate for each currency was 50.0%.
- Generally, the larger the position, the higher the maintenance margin requirement, and the lower the maximum leverage that can be set.
- The maintenance margin calculation formula for USDT margin contracts is: Face Value * |Number of Contracts| * Contract Multiplier * Position Tier Maintenance Margin Rate * Mark Price.
Main Stakeholders
As the creator and implementer of this system, OKX exchange is committed to improving market liquidity, reducing platform risk, and ensuring market stability through a tiered margin system. For trading users, understanding and complying with tiered margin rules is key to managing their own position risks. Users should proactively learn the relevant rules and flexibly adjust their trading strategies based on market changes and their own risk tolerance.
