Understanding Trailing Stops
What is a Trailing Stop?
A trailing stop is a dynamic stop-loss order that "trails" the market price as it moves in your favor. Unlike a fixed stop loss, which stays at a specific price level, a trailing stop moves up (for long positions) or down (for short positions) with the market.
Why Use It?
The primary goal of a trailing stop is to lock in profits while giving your trade room to grow. It protects you from sudden market reversals by securing gains as the price increases, without capping your potential upside.
How to Use This Calculator
- Enter Entry Price: Input the price at which you bought the asset.
- Enter Current Price: Input the current market price of the asset.
- Enter Quantity: Input the number of shares, contracts, or units you hold.
- Set Trailing Percentage: Choose the percentage distance you want your stop to trail behind the highest price. A common default is 15%, but this depends on the asset's volatility.
- Optional Dividend: If the asset pays a dividend, you can enter it to adjust the calculation for accuracy.
Example Scenario
Let's say you bought a stock at $100. It rallies to $120. You set a 10% trailing stop.
- Highest Price: $120
- Trailing Stop Distance: $120 * 10% = $12
- Trailing Stop Price: $120 - $12 = $108
If the stock falls to $108, your stop order triggers, locking in an $8 profit per share ($108 - $100). If the stock continues to rise to $150, your new stop price becomes $135 ($150 - 15), securing even more profit.
Pro Tip: Automation
Manually calculating and adjusting trailing stops can be tedious and prone to emotional errors. Professional traders automate this process using algorithmic trading strategies.
Frequently Asked Questions
What is a good trailing stop percentage?
There is no "one size fits all" percentage. It depends on the asset's volatility. For highly volatile assets (like crypto), a wider stop (15-25%) might be needed to avoid getting stopped out by noise. For stable blue-chip stocks, a tighter stop (5-10%) might suffice. Use the calculator's Scenario Analysis to see how different percentages affect your risk.
Does the trailing stop price ever go down?
For a long position (buying), the trailing stop price ONLY moves up. It never moves down. This is the "ratchet" effect that locks in profits. If the market price drops, the trailing stop stays at its highest calculated level until the price recovers and makes a new high, or until the stop is hit.
Can I use this for short selling?
Yes! For short selling, the logic is inverted. The trailing stop follows the price down, protecting your profits as the asset value decreases. If the price rises by your set percentage from its lowest point, the stop triggers.