Trailing stop loss vs trailing stop limit: how each works

What a trailing stop is

A normal stop-loss sits at a fixed price below your buy. A trailing stop moves. It stays a set distance, in percent or price, below the highest price reached since you bought, and it only ever moves up. If the price falls back by that distance from its high, the stop triggers.

That gives it two jobs at once: it limits the loss if a trade goes wrong straight away, and it protects part of the gain if the trade goes right and then turns.

How a trailing stop moves, step by step

You buy ETH at $3,000 with a 5% trailing stop:

1. At the start the stop is at $2,850, 5% below $3,000.
2. ETH rises to $3,200. The stop moves up to $3,040.
3. ETH rises to $3,400. The stop moves up to $3,230.
4. ETH falls to $3,300. The stop stays at $3,230; it never moves down.
5. ETH falls to $3,230. The stop triggers and the position is sold.

The trade kept most of the rise from $3,000 to $3,400 without anyone having to choose the top.

Trailing stop loss vs trailing stop limit

Both use the same moving trigger. They differ in what happens when it is hit.

• Trailing stop loss (trailing stop market): once triggered, it sells at market. It almost always fills, but in a fast fall the price can be below the trigger. That gap is slippage.
• Trailing stop limit: once triggered, it places a limit order at a set offset below the trigger, such as 0.5%. It never sells below that limit, but if the price falls straight through it, nothing sells and you still hold a falling position.

The trade-off is the same as with fixed stops: certainty of getting out against control over the price. For protecting a gain in crypto, where falls can be sudden, the market version is usually the safer choice. Read stop loss vs stop limit for the fixed-stop version of this comparison.

How to choose the trailing distance

• Wider than normal pullbacks. If a coin often dips 4% within a rise, a 3% trail will sell early on ordinary noise.
• Tighter for short swings, wider for trends. A rebound trade might use 3% to 5%; a trend-following rule might use 8% to 15%.
• Mind the coin. Smaller coins swing more, and need wider trails than BTC.
• Test several distances. Backtest 3%, 5% and 8% on the same period, with fees, and compare both the result and the worst drop.

Trailing stop or fixed take-profit?

A fixed take-profit sells at one level and ignores any rise beyond it. A trailing stop never sells into strength; it waits for a fall from the high. That makes the trailing stop better in trends and the fixed take-profit better in choppy markets, where prices bounce and fall back before a trail would lock anything in.

Some strategies combine them: a fixed stop-loss to cap the first loss, and a trailing stop that only starts once the trade is a set amount in gain.

A worked example

A dip-buying rule on SOL: buy $50 when SOL falls 7% within 24 hours, with an 8% stop-loss and a 6% trailing stop instead of a fixed target.

• SOL falls 7.4% and the agent buys at $150.
• SOL rebounds to $165 over three days. The trailing stop rises to $155.10.
• SOL slips back to $155.10 and the agent sells at market, filling at $155.
• The trade closes about 3.3% above the buy before fees, roughly $1.60 ahead after a 0.1% fee on each side.

With a fixed 10% take-profit the same trade would never have sold at $165, and would have ridden the pullback down. This is an illustrative example, not a real result.

How TradeCorgi agents use trailing stops

• Describe it in plain words, such as "sell if SOL falls 6% from its highest price since I bought".
• It becomes the exit rule on your strategy card, next to a mandatory stop-loss and daily loss limit.
• The agent checks it at most once a minute and sells at market when it triggers.
• Backtests include fees and slippage, so you can compare a trailing stop with a fixed target on the same period.

Common mistakes

• A trail tighter than normal pullbacks. It sells on the first wobble of a rise and misses the move it was meant to protect.
• No fixed stop at the start. If a trade goes wrong straight away, a trailing stop measured from the buy price is only as good as its distance; keep a fixed stop-loss as well.
• Using a trailing stop limit in a fast market. The limit can be skipped in a sudden fall, leaving the position open.
• Never testing the distance. Compare at least three distances in a backtest with fees before choosing one.

Whichever distance you choose, write it down before the trade starts and leave it alone once the trade is open.

A trailing stop checklist

• The distance is wider than the coin's normal pullbacks.
• You know whether you want certainty of exit (market) or price control (limit).
• It has been compared with a fixed take-profit in a backtest with fees.
• A fixed stop-loss still caps the loss if the trade goes wrong at once.