# USDO Reserves
USDO is backed by high-quality, liquid reserves, primarily consisting of US Treasury Bills in the form of tokenized treasuries, such as but not limited to [TBILL](https://docs.openeden.com/treasury-bills-vault/introduction) and [BUIDL tokens](https://securitize.io/invest). These reserves are managed by OpenEden Digital ("OED") and are designed to ensure the stability and security of USDO. The foundation for maintaining 100% collateralization ratio is such that every USDO token in circulation is fully backed by equivalent assets. For the full list of reserve assets, please visit [here](/usdo/usdo-token/reserve-assets.md).
US Treasury Bills are widely regarded as one of the safest financial instruments available. These securities are backed by the US government and provide a predictable yield. By maintaining a portfolio of Treasury bills with a short average maturity, the reserve value remains stable, and the interest rate risk is minimised.
The transparent and robust management of USDO reserves provides users with assurance that the token is fully backed by secure, liquid assets, thereby maintaining confidence in its value and stability. To learn more about our transparency practices, please visit the [Transparency Section](/usdo/transparency.md).
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