> For the complete documentation index, see [llms.txt](https://docs.earn.polynomial.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.earn.polynomial.fi/technical-implementation/collateralisation.md).

# Collateralisation

Polynomial Earn will be the first ever option vaults to implement partial collateralization. Partial collateralization will allow us to sell 1 call option with less than 1 underlying asset as collateral. Similarly, we'll be able to sell put options with less than the strike price worth of sUSD as collateral. The collateralisation ratio ranges from .8 to 1 according to the strategy.