> For the complete documentation index, see [llms.txt](https://dubble-dex.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dubble-dex.gitbook.io/docs/amm/pool-types.md).

# Pool types

<figure><img src="/files/FbRQ4ETOXwfHpl6tLueo" alt=""><figcaption></figcaption></figure>

**Stable Pools**

Stable pools are intended for assets with minimal or no volatility, and therefore the pricing formula is structured to enable low slippage even for large trading volumes.

x³y + y³x ≥ k

**Variable Pools**

Variable pools are intended for assets with high price volatility and use a generic Automated Market Maker (AMM) formula for pricing.

x × y ≥ k

The total pool liquidity is maintained by using mathematical formulas. Here is a visual comparison of the stable (pink) and volatile (blue) AMM pricing equations:

* x represents the amount of the first asset in the pool
* y represents the amount of the second asset in the same pool
* k is a fixed constant