### Comment:
Institutions have to actually own the shares to short.  It's why HTS (hard to short) is a thing.  Someone has to be able to lend it to you and if it's not available shares have to be purchased and % rate based on risk will be charged.  You're right though in that most times an increase in shorts would drive the price down.

### REPLY:
So let’s say I own some aapl. Is it true that if I set an ridiculous sell limit price, say 30000$, they can’t borrow my shares to short or will they borrow it anyway?

### END.