Originally Posted by Big Most of the time you also need wealth to build wealth in this kind of speculation because you can't borrow shares as far as I understand without putting something as a collateral in case you lose. |
You'll get a margin-call if there is a short-squeeze, and you can lose a lot of money. Depending on the size of your short, and how quickly the stock is going up, your portfolio can be sucked away in a brief period of time.
But, to answer your question, your collateral can be a line of credit.