Start Date on Track Stock Movement Report

It would be a great feature to be able to run the Track Stock Movement report From a specific Date, to a specific Date.

Currently it only has an End Date to enter so you get all transactions up to the End date, but we would like to have an opening stock quantity for a particular date, then see movement POs in, SOs out etc up until the End Date and see a Closing Stock Quantity as at the end date.