# Pendle

👉 [**Visit Ecosystem**](https://www.asterdex.com/en/earn/ecosystem)

**Note:** 

* **Those who split Aster Earn assets into PT and YT without further activity on Pendle are exploiting the Au points reward system. Aster prioritizes real activity like providing liquidity or trading PT and YT on Pendle. To protect the interests of genuine DeFi holders and encourage healthy activity, exploiters may lose all Au points.**
* **The Au Points Program will officially sunset and a snapshot of Au Points balances will be taken at 00:00:00 UTC on Friday, June 13, 2025. No further Au Points will be granted after this point.** [**Read more**](https://x.com/Aster_DEX/status/1932367398872760416)**. *****Last updated: June 10, 2025***

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## Basic concepts

<figure><img src="https://lh7-rt.googleusercontent.com/docsz/AD_4nXfe1WOOqTr9fmA9qX4_ZxxBoEafXn_8ffRVuAuWoPI32JHcAHoO3jgWcPuxlvL0NEJSTt9wciLnFzlQ7YcinQsCyM_fsTSVLezux8S6e33h3H0FcYLVgDcD8c_XH1692ewqPm1l_Q?key=J3kbZi7pcl1auuw3TlOIrsy5" alt=""><figcaption></figcaption></figure>

### SY:&#x20;

* A token standard on Pendle for wrapping yield-bearing tokens.&#x20;
* SY is then split into PT and YT.

### PT:&#x20;

* Represents the principal of the underlying yield-bearing token.&#x20;

### YT:

* Represents all the yield of the asset.&#x20;

### LP:

* The LP token you get after adding liquidity.


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