Example Scenario: I short 100 shares of company XYZ. Incidentally, I also own 100 shares of XYZ. The price of XYZ goes down and I need to cover my short sale.
Question: Can I cover using the 100 shares of XYZ that I already own, or do I need to explicitly "buy to cover", and purchase from my broker's existing inventory? If the former is true, how do I initiate it?