This is a Beast.....I believe this is Short Covering...I lov Buy-In of the Short Position
You can be forced to buy the shares you are short (a Buy-In) on two occasions:
When TD Direct Investing is recalled on the equity they borrowed to protect your position.
When TD Direct Investing is unable to borrow shares to protect the position.
A Buy-In can happen without prior notice to you. Also, even if you repurchase the short position, you are still liable to a Buy-In until the settlement date