What is Parabolic SAR? Complete Guide for Indian Investors & Traders
Parabolic SAR (Stop and Reverse) plots a series of dots that trail price: below the candles in an uptrend and above them in a downtrend. The dots accelerate toward price as the trend matures. When price touches the dots, the indicator flips sides, signalling a reversal.

Suppose Bata India rallies while SAR dots climb beneath it, each dot a little closer than the last. The moment a session trades down into the dots, they flip above price. The trailing stop has been hit and the system reverses its stance.
How does the acceleration mechanism work?
Each new extreme in the trend increases the acceleration factor, pulling the dots toward price faster. Early in a trend the dots stay far away, giving the move room; late in a trend they hug price tightly, locking in gains. This built-in tightening is what makes SAR a self-adjusting trailing stop rather than a fixed one.
Where does Parabolic SAR work and where does it fail?
It excels in sustained, smooth trends, where the dots ride the entire move and exit near the turn. In sideways or choppy markets it flips constantly, generating a stream of small losses, which is its well-known weakness. Most traders therefore use SAR only after confirming a trend with ADX or a moving average, treating it as the exit manager rather than the entry signal.
Traders who use Parabolic SAR for short term setups can explore margin trading facility (MTF) for extra buying power. Long term investors can simply track it while building portfolios through a Stockk demat account.
Technical analysis involves interpretation. The same chart can be read differently by different traders. Always combine multiple tools and manage risk before acting on any signal.
Frequently Asked Questions
What does SAR stand for?
Stop and Reverse: the system is always in the market, flipping from long to short at each touch. Most equity traders use only the exit half. The dots mark where the current stance dies.
Can I use SAR purely as a trailing stop-loss?
Yes, that is its most common modern use: hold the position while the dots stay on your side. The accelerating dots tighten the stop as the trend ages. It removes exit hesitation completely.
What are the default SAR settings?
An initial acceleration factor of 0.02, stepping up by 0.02 to a maximum of 0.20. Higher maximums tighten faster; lower ones give trends more room. Defaults suit most daily charts.
Why does SAR perform poorly in ranges?
Ranges touch the dots from both sides repeatedly without trend follow-through. Each touch forces a flip and a small loss. A trend filter before using SAR avoids most of this.
Does SAR work on intraday Indian charts?
Yes, intraday momentum traders use it on 5 and 15-minute charts during trending sessions. On choppy days it bleeds signals. StockkAsk can explain how SAR currently sits on any stock you trade.
Investments in securities market are subject to market risks. This article is for educational purposes only and does not constitute investment advice.
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