another clarification illustrating the difference in the numbers.
TSX only shows the bi-weekly short position, ending on the last day of each month & the 15th. The amount you see is the current short position.
shortdata.ca on the other hand shows the total volume of shorts traded in that same 2-week window. Both reports rarely match.
Read more at http://www.stockhouse.com/companies/bullboard?symbol=v.ptk&postid=27751109#Q9PbYeJ6jtolKKYl.99