Stop-loss vs trailing stop: two ways to limit a loss
A fixed stop sits at one price; a trailing stop follows the highest price reached. See how each behaves and why neither is strictly better.
Key takeaways
- A fixed stop-loss stays at the price set when you enter.
- A trailing stop keeps the same distance below the highest price reached, so it rises with the trade.
- A trailing stop protects more of a real trend but can exit on a dip that was never a reversal.
- The distance of the stop matters as much as the type; test it with costs.
The fixed stop-loss
A fixed stop-loss is set at one price the moment you enter, a chosen distance below the entry, and it does not move. If price falls to that level, the trade exits. It limits the loss from the entry price.
The trailing stop
A trailing stop keeps the same distance, but measured from the highest price reached so far instead of from the entry. As price climbs, the stop climbs with it. When price finally turns down, the trade exits closer to the peak.
An illustration with Stock A
Stock A rises well above your entry and then falls all the way back. A fixed stop still triggers at the original level, so it protected you from the entry but not from giving back the gain. A trailing stop would have exited on the way down, near the peak.
The trade-off
In a real trend a trailing stop protects more of the move. In a choppy, range-bound stock it can exit you on a small dip that then reverses, which a fixed stop would have ridden out. Neither is strictly better; they answer different questions about what you want to protect.
How far away to put a stop
A very tight stop exits on normal noise and racks up costs. A very wide stop allows a large loss on each trade. A stop that suits a calm stock may be far too tight for a volatile one. This is why the distance has to be tested, not guessed.
Stops in SmartPaperDesk
Every strategy carries its own stop percentage and its own maximum holding period, shown on its card, and each strategy has its own position and daily-entry caps as a second layer of protection. You can test different stop distances in a backtest on the free plan.
Questions people ask
Which is better, a fixed stop or a trailing stop?
Neither in every case. A trailing stop suits trending stocks; a fixed stop can suit choppy ones. Test both on the rule you use.
Where should I place a stop-loss?
There is no single answer. It depends on how much the stock normally moves and how much of your account you are willing to lose on one trade. Test a few distances with costs included.
Test different stop distances on the free plan
Keep reading
SmartPaperDesk is an educational paper-trading tool. Examples use a made-up Stock A.
For educational purposes only. This is not investment advice. Past performance does not guarantee future results.