Why did my account have a Regulatory Fee Adjustment?

Adjustments appear at the end of each week when there is trading activity

If you like to look at your receipt after visiting a store, then chances are you noticed a "Regulatory Fee Adjustment" line item in your History tab. Adjustments made to your account can be a debit or a credit. 

When there is a trading activity, regulatory fees are reconciled weekly to make up for rounding. Below is an example of a Regulatory Fee Adjustment in the History tab of the desktop platform.