What it is — Stop Loss
A stop loss is an order attached to your trade that closes it automatically if price moves against you by a set amount. Buy EURUSD at 1.0850 with a stop at 1.0830: if price falls to 1.0830, your platform closes the trade and your maximum loss on that trade is locked in — no scrolling, no hoping.
The stop exists to turn an undefined risk into a defined one. Without it, a “small” losing trade can grow until margin calls or emotions force you out. Every position-sizing formula — including our Position Size Calculator — starts with one question: “how many pips to your stop?”
Why it matters — Stop Loss
- It caps every trade. One surprise news candle can wipe an unprotected account; a stop makes that impossible.
- It makes risk math possible. Lot size, risk-reward and expectancy all depend on knowing your stop distance in advance.
- It removes the hardest decision. Closing a loser is painful in the moment — the stop does it for you, without hesitation.
Where the stop belongs — with numbers
A stop goes where the trade idea is wrong, not where the pain begins. Long at 1.1229 above a support level at 1.1204? The idea is wrong if price closes below that level — so the stop sits under it, say 1.1204, a 25-pip stop. At 0.04 lots that is $10 of risk on a $1,000 account — your 1%. If the honest distance to invalidation forces more risk than 1%, the trade is too big: size down or skip it. “As close as possible” is not a placement strategy — stops inside the noise get hit by spreads and ordinary wiggles, then the move happens without you.
Stop-loss vs mental stop — the execution truth
A hard stop is an order at the broker; a mental stop is a promise to yourself to click during a stressful moment. Only one of them works when the internet does not. Hard stops also are not magical: in a gap or a news spike you get the next available price, which can be worse — our own calculator ships a slip example where a 25-pip stop with +10 pips of slippage turns a planned $10 loss into $14. Plan for that reality: size so the with-slippage loss still fits your 1%.
Frequently asked questions — Stop Loss
Should I ever trade without a stop loss?
No. The only exception is a professional-level hedging book — and even then the risk is tracked, not ignored. On PipAtlas, every example assumes a hard stop is attached the moment the trade opens.
Can a stop-loss fail?
It can fill worse than the stop price. During gaps (weekends, news) the broker fills at the next available price, not your exact level. Stops reduce risk to a known maximum-ish; they do not guarantee a price.
Should I ever move my stop once I am in a trade?
Only in the trade’s favor — to breakeven once the move has paid for it, or to trail behind structure. Moving a stop further away to “give it room” is how a planned $10 loss becomes an unplanned $60 one.
Where should the stop go — at a round number?
Place it where your idea is wrong, not where the loss “feels acceptable”: beyond the swing that your setup relies on. Then size the position to fit your 1% budget — never move the stop further to fit a bigger lot.
Related terms — Stop Loss
Related tools — Stop Loss
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