Overnight fees are charged for options and futures instruments for every day the net position is held overnight. These fees apply only when the available cash in a given currency is less than the margin required in that same currency.
The overnight fee is calculated per currency, based on:
- The daily margin requirement,
- The available cash, and
- The funding fee for that currency.
A position is considered held overnight if it remains open after the market hours of the instrument.
Fees are charged monthly for each applicable currency.
Formula
Funding fee 1.50%
Daily Overnight Fee per currency=max(0, Margin−max(0, Cash)) × Days Held × Funding Fee / 360 days
Example
The required margin exceeds the available cash, generating a financing cost.
Cash = USD 5’000
Margin = USD 20’000
Max = USD 15’000
Days held = 3
Overnight Fee = 15’000×3×0.015/360=1.87
Result: USD 1.87