Core Definition of Trailing Stop-Loss
Trailing Stop-Loss is a dynamic stop-loss level that follows the price movement. When the price moves in your favor, the stop-loss automatically adjusts to lock in profits.
Unlike a fixed stop-loss, a trailing stop-loss allows you to protect profits without capping upside — it is the core tool for "letting profits run." The Strategy Center strategies also include built-in automatic trailing stop-loss functionality.
Three Methods for Setting Trailing Stops
Method 1: Fixed Percentage Trailing
| Trading Style | Recommended Percentage |
|---|---|
| Short-term | 5-8% |
| Medium-term | 10-15% |
| Long-term | 15-20% |
Example: Entry price $100, set 10% trailing stop
- Price rises to $120 → Stop moves up to $108 ($120 - 10%)
- Price rises to $130 → Stop moves up to $117 ($130 - 10%)
- Price falls back to $117 → Auto exit, profit $17
Method 2: ATR Trailing
Use ATR to set a dynamic distance:
- Short-term: 1.5-2 × ATR
- Medium-term: 2.5-3 × ATR
Advantage: Automatically adapts to each stock''s volatility characteristics, giving more room when volatility is high.
Method 3: Moving Average Trailing
Use moving averages as dynamic stop-loss:
- Short-term: Exit when price breaks below 20-day MA
- Medium-term: Exit when price breaks below 50-day MA
Advantage: Aligns with trend analysis, won''t shake you out during the main rally phase.
When to Tighten Your Trailing Stop?
When to Tighten
- Approaching key resistance levels (e.g., previous highs, Bollinger Band upper band)
- Profit has reached 80%+ of target
- Market volatility suddenly spikes
When NOT to Tighten
- Trend is still strong, price steadily rising along the moving average
- Just made a small profit and want to "lock it in" (common reason for missing big moves)
- Tightening early out of fear
Common Mistakes
Mistake 1: Tightening the Stop Too Early
You just made 5% profit and move the stop to breakeven, only to get shaken out by a normal pullback and miss a 30% gain. Remember: give your profits enough breathing room.
Mistake 2: Never Using a Trailing Stop
Setting a fixed target price, then watching helplessly as profits evaporate after the price far exceeds your target.
Mistake 3: Adjusting the Stop Too Frequently
Moving your stop-loss daily will leave you directionless. Adjusting once a week is sufficient.
Summary
Golden rules of trailing stop-loss:
- Do not tighten too early — give profits enough room
- Use objective standards — ATR or MA, not feelings
- Only exit when the trend changes — not because you "made enough"
- Use systematic tools — the Strategy Center offers fully automated stop-loss and trailing stop-loss features