Quick Take: The Role of a Stop-Loss Order
Let's talk stop-losses. This isn't rocket science, it's about damage control. A stop-loss is simply an order to close your position if it hits a certain price, limiting your potential loss on a trade. You set it when you enter the trade, not after things go south. It's an exit strategy for when you're wrong, and frankly, you'll be wrong sometimes. If you're long something like $USLV at, say, 13.92, you might put your stop at 13.50, deciding upfront how much you're willing to lose. It forces discipline and protects your capital from catastrophic moves.
This makes a lot of sense. So, for example, if I'm thinking of buying a stock, I should decide what my maximum acceptable loss is before I even hit the buy button?