What a stop-loss is
A stop-loss is a decision made before the trade and carried out automatically. You pick the price where your idea is proven wrong. If price gets there the order closes the position. You no longer have to decide in the heat of the moment. The decision was already made when you were calm.
Where to place it
Put the stop where the trade idea is wrong and not where the loss feels comfortable. In an uptrend that is usually below the latest higher low. See market structure. Give the stop room beyond obvious levels so a small wick does not take you out. A liquidity sweep can run through a stop placed right at a clean high or low.
Once you know the stop distance you can size the trade. The position size calculator turns your account size and risk percentage and stop into an amount to buy.
Types of stop orders
- Stop-market. Triggers a market order when price reaches your stop. It almost always fills but the fill price can differ from your stop.
- Stop-limit. Triggers a limit order. You control the worst price but the order may not fill if price moves past it.
- Trailing stop. Follows price at a set distance as it moves in your favor and stays put when price reverses.
Slippage and gaps
A stop is not a guaranteed price. In a fast market price can jump past your level and the order fills at the next available price. That difference is slippage. Thin markets and big news can make it larger. This is one reason to keep risk per trade small. If a stop fills worse than planned the loss stays survivable.
Never move it away from price
The most important rule about a stop is simple. Do not move it except in your favor. Moving it farther from price turns a small planned loss into a larger unplanned one. It breaks the plan you made when you were thinking clearly. If you tighten it to lock in a gain that is a different decision and is fine. Write the stop down before you enter and keep that note in your trading journal.
Mental stops versus real orders
A mental stop is a price you promise yourself you will exit at. It depends on you being at the screen and on you following through. Real orders do not get tired or hopeful. Many beginners find a real order placed at the time of entry easier to follow.
Common mistakes
- No stop at all. One bad trade can wipe out many good ones.
- A stop that is too tight. Normal movement takes you out before the idea has a chance.
- Sizing the stop to the position. Size the position to the stop and not the other way around.
- Widening after entry. This is the move that turns a plan into a hope.
Frequently asked questions
What is a stop-loss in simple terms?
It is an order that exits your trade at a price you choose in advance. It limits the loss if the trade goes against you.
Is a stop-loss guaranteed to fill at my price?
No. In fast markets the fill can be worse than your stop. A stop-limit controls the price but may not fill. Keep your position size small enough that a worse fill is survivable.
How do I decide how far away to put my stop?
Put it where your trade idea is proven wrong such as beyond the latest swing point. Then size the position so the loss from that stop equals the amount you planned to risk.
Related terms
Put it into practice
Written by CCF. CCF was founded by Joshua Montoya and Marty Cooney as equal co-founders. Last updated November 3, 2026.
Educational content only. CCF provides general education about digital assets, trading and investing. This entry explains a concept and does not suggest any trade. It is not individualized financial, investment, legal or tax advice and CCF does not guarantee any outcome or return.