Indicators · Intermediate

Parabolic SAR For Trailing Trends

A 1-minute lesson from the MarketPro academy, one of 22 in trading indicators.

Last reviewed 15 September 2026 by the MarketPro research desk · Editorial policy

Short answer

Parabolic SAR (stop and reverse) plots a series of dots above or below price that shift position as a trend develops, originally designed as a mechanical tool for trailing a stop loss behind an ongoing trend. When a market is trending upward, the dots sit below price and gradually accelerate closer to it as the trend continues.

How The Dots Behave

When a market is trending upward, the dots sit below price and gradually accelerate closer to it as the trend continues. When price crosses through the dots, they flip to the opposite side, signaling a potential trend reversal. The acceleration factor built into the calculation means the dots tighten in more quickly the longer a trend persists, which is meant to help lock in progress as a trend matures.

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Parabolic SAR performs best in strongly trending conditions and tends to whipsaw frequently, flipping back and forth, during sideways or choppy markets
Because it is designed to always be "in" a position, either long or short, it produces a signal on every flip rather than only signaling when conditions are favorable
It is often combined with a trend-strength filter (such as ADX) so its signals are only acted on when a genuine trend is already confirmed

Used purely as a trailing stop mechanism during an established trend, Parabolic SAR can help remove some of the emotional guesswork from when to exit a winning position, though it should not be treated as a reliable standalone entry signal in uncertain or range-bound conditions.

Lesson 13 of 22 in Trading indicators

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Written and reviewed by the MarketPro research desk

MarketPro is a trading-signal and trading-education app operated by Harajuku Holdings LTD (Cyprus). Our signal desk publishes and tracks every trade idea in-app, and every page here is checked against the app's live behaviour before publishing. Last reviewed 15 September 2026. How we produce signals and content · About MarketPro

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