You know that doesn’t stop them from being borrowed if need be right? The only way to stop your shares from being borrowed is to have a cash account and that’s it. Ask any broker and they will tell you the same. My broker is my kids soccer coach so he is a great source of info for me. He set that straight years ago when I said I set a sell order at $2 to prevent them from being borrowed. He laughed and said if you want to stop them just use a cash account as that is the only way to prevent them from being borrowed