What is a trailing stop?
A trailing stop adjusts its trigger level as prices move favorably and submits an order once a reversal reaches a specified distance. In crypto trading it can sell held assets or close contract positions. Unlike a fixed-price stop-loss, it moves the trigger level, not an already executed price.
When does tracking start?
Tracking begins at activation, not from the asset’s earlier all-time high or low. Some products allow an activation price, with recording starting only when that condition is met. OKX’s trailing-stop explanation, for example, activates an order immediately after submission if no activation price is set.
Activation and triggering are separate stages: activation starts tracking; triggering means price has reversed by the required distance and the system starts submitting the subsequent order. Monitored reference prices and activation conditions depend on the product.
How does a sell trailing stop work?
It records the highest price from activation. A new high updates the record and raises the trigger level. On a decline, the recorded high and trigger level remain unchanged.
The reversal distance can be a fixed amount or a percentage:
- Fixed amount: trigger price = highest price after activation − specified price distance.
- Percentage: trigger price = highest price after activation × (1 − callback ratio).
For example, at a high of 120 USDT, a fixed 5 USDT callback implies 115, while a 5% callback implies 114. USDT is the quote asset. These settings are not equivalent: a fixed amount keeps the monetary distance constant, while a percentage’s monetary distance changes with the recorded price.
An example from activation to triggering
Suppose a sell trailing stop activates immediately at a reference price of 100 USDT with a 5% callback. These figures are illustrative; settings and the reference-price basis remain unchanged.
Price first rises to 110, moving the trigger from 95 to 104.5; then rises to 120, moving it to 114. A decline to 116 has not met the callback condition, so the trigger remains 114. Only a decline to 114 triggers the subsequent sell order.
| Reference-price movement | Highest price recorded after activation | Trigger price | Result |
|---|---|---|---|
| 100 at activation | 100 | 95 | Tracking starts |
| Rises to 110 | 110 | 104.5 | Trigger rises |
| Rises to 120 | 120 | 114 | Trigger rises |
| Falls to 116 | 120 | 114 | Not triggered |
| Falls to 114 | 120 | 114 | Triggers and submits a sell order; execution is separate |
An ordinary stop-loss with a fixed trigger of 95 would not automatically become 114 after price rises to 120 unless manually changed. This is the central difference.
How does tracking work when buying to close a short?
A short is a position direction that gains from falling prices and loses from rising prices. Buying to close reduces or ends that short position. Tracking then records the lowest price since activation. New lows lower the trigger; on a rebound, the recorded low stays unchanged.
With a fixed amount, the trigger is the low plus the specified distance. With a percentage, it is the low multiplied by (1 + callback ratio). For example, a low of 80 USDT with a 5% rebound condition gives a trigger of 84 USDT.
What does the callback distance mean?
For the same reference-price path and activation conditions, a smaller distance requires a smaller reversal; a larger distance requires a larger reversal.
This changes the trigger condition, not a guarantee that final execution losses are limited to that amount or percentage. Fixed amounts and percentages must be compared separately, not by entered numbers alone. No setting is best for all assets and market conditions.
At what price does execution happen after triggering?
OKX’s trailing stop, for example, submits a market closing order after triggering, attempting to accept available quotes. If price jumps past the trigger or available quantity is insufficient, execution can differ from the trigger and create slippage. Order validation and trading restrictions can also prevent execution or permit only a partial fill.
Activation, triggering and actual execution must therefore be checked separately. See trigger orders and market orders for the execution mechanism. In contracts, insufficient collateral may trigger liquidation first. A trailing stop does not guarantee earlier completion; compare stop-loss and estimated liquidation price.
Related terms
Explore stop-loss, take-profit and trigger orders, or return to the crypto glossary.
References
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