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

# TickLiquidity

`TickLiquidity` structs are used to store liquidity within the Dex. Each tick has a specific price and holds liquidity for a single token. `TickLiquidity` come in two general types – `PoolReserves` for storing LP positions and `LimitOrderTranches` for storing maker limit orders. Both types of ticks share several common fields: PairID, TokenIn, TickIndex. PairID refers to the trading pair for which a given tick is used. TokenIn denotes which side of the TradingPair a tick holds liquidity for.