How to Calculate Stop Loss in Intraday Trading

• Percentage example: A 2% stop loss on a Rs. 300 entry price gives a calculated stop price of Rs. 294.
• Support method: You can consider a stop below a relevant support level, such as Rs. 198 below Rs. 200 support.
• Moving average method: You can use indicators such as the 50-day SMA or 200-day moving average as reference levels.
• Illustrative trade: Buying 50 shares at Rs. 200 and using Rs. 180 as the stop price creates a Rs. 20 price difference per share.
• The actual execution price can differ from the trigger price, particularly when the market moves quickly.

The process works as follows:

1. Set the trigger price: Choose the price at which you want the stop-loss order to activate.
2. Place the order: Enter the required stop-loss order through your broker.
3. Wait for the trigger: The sell stop-loss order remains inactive until the last traded price reaches or falls below the trigger price.
4. Execute the order: Once triggered, the order is released into the regular order book for execution.

A stop loss helps you define an exit point, but it does not guarantee execution at the exact trigger price. In a fast-moving market, the execution price can differ from the trigger price.

1. Initial purchase:

Suppose you buy 50 shares at Rs. 200 per share.

2. Setting the stop loss:

Suppose you set the stop price at Rs. 180.

If the relevant trigger condition is met, the stop-loss order becomes active. The eventual execution price may differ from Rs. 180.

3. Scenario 1: Stock price moves up to Rs. 220:

If you sell the 50 shares at Rs. 220, the calculation is:

This is an illustrative calculation and does not include applicable brokerage, taxes or other trading costs.

4. Scenario 2: Stock price dips to Rs. 180:

If the position is executed at Rs. 180, the calculation is:

The Rs. 1,000 loss assumes execution at Rs. 180. A stop-loss order does not guarantee execution at the trigger price.

Estimate your applicable charges using the brokerage calculator

1. Calculate stop loss using the percentage method:

The percentage method involves selecting a percentage below the purchase price for a long position.

Formula:

Stop price = Purchase price − (Purchase price × stop-loss percentage)

For example, if you buy a stock at Rs. 300 and choose a 2% stop loss:

Stop price = Rs. 300 − (Rs. 300 × 2%) = Rs. 294

The original article mentions 1% to 3% as an example range. These percentages are trading approaches and are not universal SEBI or NSE requirements.

2. Calculate stop loss using the support method:

The support method uses a price level where a stock has previously found buying interest. You may consider placing the stop price below this level if a break below support changes the trade setup.

For example, if a stock has repeatedly found support around Rs. 200, a trader may consider a stop price of Rs. 198.

Support levels are based on technical analysis and do not guarantee that a stock will reverse at that level.

3. Calculate stop loss using the moving averages method:

The moving-average method uses indicators such as the 50-day SMA or 200-day moving average as reference levels.

For example, if a stock is trading above its 50-day SMA, a trader may consider a stop price below that moving average. The level used depends on the trading strategy and price movement.

You can learn more about moving average trading strategies and exponential moving average.

• Choose a logical level: Consider the trade setup, price movement and relevant technical levels.
• Avoid arbitrary levels: A stop placed too close to the entry price may be triggered by normal price fluctuations.
• Consider volatility: Securities with larger price movements may require a different stop-loss approach.
• Check support levels: A relevant support level can provide context when determining your stop.
• Understand execution risk: The actual execution price may differ from the trigger price during rapid market movements.

A stop loss helps you define an exit level when an intraday trade moves against your position. You can calculate it using a percentage of the entry price or identify it using support and moving-average levels.

For example, a 2% stop loss on a Rs. 300 entry price gives a calculated stop price of Rs. 294. However, the trigger price does not guarantee the exact execution price, so you should understand the order mechanism and market risks before using a stop-loss order.