Actually, unless you request and receive the physical stock certificates, your shares are held in the name of your brokerage firm and they can do anything they want with them, including ‘loaning’ them for profit to someone who wants to short them.
Setting a high limit order (or any order) gives your broker, as well as the clearing firm, the ability to see your position, giving them the chance to buy and sell hundreds of times if needed. Computers, using algorithms, can cover most positions in a matter of minutes.
Remember, not everyone posting on these boards is trying to help. What’s more likely is that contractors and promoters are working these boards, telling people falsely that if they set high limit orders they will squeeze shorty. Not true.
Read your brokerage agreement or call your broker.
GT’s,
4God
Market Data 
Markets 
AI
