What are the best settings for the Parabolic SAR indicator?

The Parabolic SAR helps traders identify trend direction and reversals, with default settings of 0.02 AF and 0.2 MAF balancing sensitivity and reliability across most markets.

Aug 01, 2025 at 03:17 am

Understanding the Parabolic SAR Indicator

The Parabolic SAR (Stop and Reverse) is a technical analysis tool developed by J. Welles Wilder Jr. It is primarily used to determine the direction of price movement and potential reversals in the market. The indicator appears as a series of dots placed either above or below the price candles on a chart. When the dots are below the price, it signals an uptrend, and when they are above, it suggests a downtrend. Traders use these signals to identify potential entry and exit points. The underlying formula adjusts based on acceleration and maximum values, which directly affect the sensitivity of the indicator. The default settings in most trading platforms are an acceleration factor (AF) of 0.02 and a maximum acceleration factor (MAF) of 0.2.

Default Settings and Their Impact

The default values of 0.02 for AF and 0.2 for MAF are widely used across platforms like MetaTrader, TradingView, and Thinkorswim. These settings are designed to balance responsiveness and reliability. The acceleration factor increases by 0.02 each time a new extreme point (EP) is reached in the trend, up to the maximum of 0.2. This means the SAR dots will move closer to the price as the trend continues, tightening the stop-loss level in a trending market. The benefit of the default configuration is that it reduces false signals during moderate trends. However, in highly volatile markets, these settings may generate premature reversals, leading to whipsaws. Traders should be aware that a lower AF makes the SAR less sensitive, while a higher AF increases sensitivity.

Adjusting the Acceleration Factor for Short-Term Trading

For traders focusing on short-term strategies such as scalping or day trading, adjusting the acceleration factor can improve signal accuracy. Consider the following settings:

• Set the acceleration factor to 0.04 to make the SAR respond faster to price changes
• Keep the maximum acceleration factor at 0.4 to allow quicker tightening of the stop level
• Apply the indicator on 1-minute to 15-minute charts for intraday precision

These adjustments cause the SAR dots to converge with price more rapidly, which is beneficial in fast-moving markets. However, increased sensitivity also raises the risk of false signals. To mitigate this, combine the modified SAR with volume indicators or short-term moving averages (e.g., 9 EMA) to confirm trend direction. Always backtest these settings on historical data using a demo account before live trading.

Optimizing for Swing and Position Trading

Swing traders and position traders benefit from a more stable version of the Parabolic SAR. Reducing sensitivity helps avoid noise in longer timeframes such as daily or 4-hour charts. Recommended settings include:

• Lower the acceleration factor to 0.01
• Reduce the maximum acceleration factor to 0.1 or 0.15
• Use in conjunction with trend-confirming tools like ADX (Average Directional Index) above 25

With these parameters, the SAR dots change direction less frequently, providing fewer but higher-confidence signals. This setup works best in strong trending markets. For example, during a prolonged bullish phase in Bitcoin, the SAR will remain below price for extended periods, allowing traders to stay in the trade without premature exits. It is crucial to align SAR signals with support/resistance levels and higher timeframe trend analysis to improve reliability.

Combining Parabolic SAR with Other Indicators

Using the Parabolic SAR in isolation can lead to misleading signals, especially in sideways or choppy markets. Enhancing its accuracy involves pairing it with complementary tools. Effective combinations include:

• Pair with EMA crossovers (e.g., 10 and 30 EMA): Only take SAR signals that align with the direction of the moving average crossover
• Use RSI (Relative Strength Index) to filter overbought/oversold conditions: Avoid entering long positions when RSI is above 70 and SAR flips above price
• Combine with volume profile or OBV (On-Balance Volume): Confirm SAR reversals with increasing volume to validate breakout strength

For instance, if the SAR flips below the price on a 4-hour Ethereum chart and the 14-period RSI is below 30, it strengthens the case for a bullish reversal. Similarly, a SAR flip above price with declining OBV supports a bearish signal. These multi-indicator strategies reduce false entries and improve trade timing.

Backtesting and Personalizing Settings

Optimal Parabolic SAR settings vary depending on the asset, timeframe, and market condition. The most effective approach is to backtest different configurations using historical data. Steps to conduct a proper backtest:

• Select a cryptocurrency pair such as BTC/USDT or ETH/USDT
• Choose a specific timeframe (e.g., 1H, 4H)
• Apply multiple SAR settings (e.g., AF 0.01/MAF 0.1, AF 0.03/MAF 0.3)
• Manually record entry/exit signals and calculate win rate and risk-reward ratio
• Use trading platforms with strategy tester tools (e.g., TradingView’s Pine Script)

During backtesting, pay attention to how often the SAR generates whipsaws in ranging markets. Adjust the AF and MAF until the balance between signal frequency and accuracy meets your risk tolerance. Personalization is essential—what works for Bitcoin may not suit altcoins with higher volatility.

Frequently Asked Questions

Can the Parabolic SAR be used in sideways markets?

The Parabolic SAR performs poorly in sideways or consolidating markets because it generates frequent false reversal signals. The dots tend to flip above and below the price rapidly, leading to whipsaws. It is advisable to avoid relying solely on SAR during low-volatility phases. Use Bollinger Bands or Average True Range (ATR) to identify ranging conditions and pause SAR-based trading.

How do I change Parabolic SAR settings on TradingView?

Click on “Indicators” at the top of the chart, search for “Parabolic SAR,” and add it. Then click the settings (gear) icon next to the indicator name. Adjust the “Step” value (acceleration factor) and “Maximum” value (maximum acceleration). For example, set Step to 0.03 and Maximum to 0.3. Click “OK” to apply.

Is the Parabolic SAR suitable for automated trading bots?

Yes, the SAR can be integrated into algorithmic strategies, especially trend-following bots. However, include additional filters such as minimum price movement thresholds or volatility checks to prevent execution during noise. Code the bot to only act on SAR flips when accompanied by a minimum candle size or volume spike.

Does the Parabolic SAR work better on certain cryptocurrencies?

It tends to perform better on highly liquid and trending assets like Bitcoin and Ethereum due to their sustained directional moves. Low-cap altcoins with erratic price action often trigger false SAR signals. Always assess the historical volatility and average directional movement before applying SAR to a new coin.