As market data subscriptions move to a pre-billed model, clients may see they have been charged for a market data subscription which is typically waived due to the commissions generated in the account.
Under the new pre-billing model, clients will be charged for all subscriptions at the beginning of the month. If the account generates the required commissions which will allow the costs to be waived, the subscription cost will be refunded during the following month's billing cycle.
For instance, if you subscribe to the US Securities Snapshot and Futures Bundle, the account will be charged $10.00 on the first of the month. If the user generates $30.00 in commission, the subscription cost will be refunded at the beginning of the next month.