Leverage Tier

One tier in a market's leverage schedule, where maximum allowed leverage decreases as position size increases. Used in markets as a nested array in leverageTiers.

Schema

Field	Type	Required	Description
notionalFloor	number	yes	Minimum notional position size in USD for this tier (inclusive).
notionalCeil	number	yes	Maximum notional position size in USD for this tier (inclusive). Use a large number (e.g. 1e15) for the top tier.
maxLeverage	number	yes	Maximum leverage allowed within this notional range.
maintenanceMarginRate	number	yes	Maintenance margin rate as a decimal. e.g. 0.005 = 0.5%.

Example

[
  {
    "notionalFloor": 0,
    "notionalCeil": 50000,
    "maxLeverage": 100,
    "maintenanceMarginRate": 0.005
  },
  {
    "notionalFloor": 50000,
    "notionalCeil": 250000,
    "maxLeverage": 50,
    "maintenanceMarginRate": 0.01
  },
  {
    "notionalFloor": 250000,
    "notionalCeil": 1000000000000000,
    "maxLeverage": 20,
    "maintenanceMarginRate": 0.025
  }
]

Notes

• Tiers should be contiguous — the notionalCeil of one tier equals the notionalFloor of the next.

• Return tiers sorted ascending by notionalFloor.

• maintenanceMarginRate is used to determine the liquidation price: position is liquidated when remaining collateral / notional ≤ maintenanceMarginRate.