# stUSDC

## stUSDC vs wstUSDC

There are two versions of StakeUp stTokens, namely stUSDC and wstUSDC. Both are fungible tokens but they reflect the accrued yield differently.

## stUSDC

The token's yield is updated every `24 hours` through the `poke` function and rebases constantly as the previous day's yield is dripped to users. A user is able to redeem their `stUSDC` at a rate 1:1 to `USDC` 

{% hint style="warning" %}
For users not familiar with rebasing tokens:

* Token balances will change according to the amount of yield accumulated within the system.
  {% endhint %}

## wstUSDC

Provides an alternative to the rebasing version of `stUSDC`. It has a static balance by representing the share that a user has in the system. At any given time, anyone holding wstUSDC can convert any amount of it to stUSDC at a fixed rate, and vice versa. The rate is the same for everyone at any given moment. This method allows for enhanced composability across DeFi. 

{% hint style="warning" %}
For users not familiar with rebasing tokens:

* Due to the fact that `wstUSDC` is non-rebasing, the user's balance while holding the token will remain static and value accrual be reflected in the exchange rate of the token.
  {% endhint %}

## Wrapping

Users can wrap their `stUSDC` token by calling `wstUSDC::wrap` . The conversion is based on the current exchange rate, which reflects the total value of `stUSDC` in circulation.

## Unwrapping

Users can unwrap their `wstUSDC` token by calling `wstUSDC::unwrap` . The conversion is based on the current exchange rate, which reflects the total value of `stUSDC` in circulation.

## Fees

There is a 10% performance fee on yield generated within `stUSDC`. This fee is paid fully to the stakers of the SUP token within the StakeUp Protocol.

<figure><img src="https://2455545710-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FFHbkcmcAJcn2AioejDgp%2Fuploads%2FIiGO534Si1nLtUwvevGl%2FScreenshot%202024-08-15%20at%209.16.03%E2%80%AFPM.png?alt=media&#x26;token=f804bef4-5018-46cf-97ee-3195b843d276" alt="" width="375"><figcaption><p>10% Performance Fee</p></figcaption></figure>