# Trading Stats

## Stats Module

The Stats Module tracks user maker and taker volumes over a period of time (aka look-back window). This is currently set to 30 days. The maker and taker volume info is used to place users in corresponding fee-tiers.

| Title                                                                                                                                      | Value                                    | Definition                                             |
| ------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------- | ------------------------------------------------------ |
| [window\_duration](https://github.com/dydxopsdao/networks/blob/fd7ee6e63e7e4b3ffab4fe600ac7cdb77c28d88d/dydx-mainnet-1/genesis.json#L3794) | <p>2592000s</p><p><br></p><p>30 days</p> | The desired number of seconds in the look-back window. |