Parabolic SAR (PSAR) Indicator: Complete Encyclopedia and Trading Guide
The Parabolic SAR (Stop and Reverse), commonly abbreviated as PSAR, is one of the most famous trend-following indicators in technical analysis. Developed by J. Welles Wilder Jr., the indicator helps traders identify trend direction, potential reversals, and trailing stop levels.
The PSAR indicator appears as a series of dots placed above or below price candles. These dots shift position whenever the market trend changes, making Parabolic SAR one of the easiest indicators to interpret visually.
Today, PSAR is widely used by Forex traders, Gold traders, stock investors, cryptocurrency traders and institutional professionals around the world.
History of the Parabolic SAR Indicator
The Parabolic SAR indicator was introduced in 1978 by the legendary technical analyst J. Welles Wilder Jr.
It was published in his groundbreaking book:
New Concepts in Technical Trading Systems
This book changed modern technical analysis forever and introduced several indicators that remain popular decades later.
Who Was J. Welles Wilder Jr.?
John Welles Wilder Jr. was an American engineer, real estate developer and one of the pioneers of modern technical analysis.
Despite not beginning his career in finance, Wilder's mathematical mindset enabled him to create some of the most influential trading indicators ever invented.
- Relative Strength Index (RSI)
- Average True Range (ATR)
- Parabolic SAR (PSAR)
- Directional Movement Index (DMI)
- Average Directional Index (ADX)
Why Was Parabolic SAR Created?
Wilder designed the PSAR indicator to help traders solve one of the biggest problems in trading:
"When should I exit a trend?"
Many traders know how to enter positions, but struggle with determining when to exit.
The Parabolic SAR was created to provide:
- Trend-following signals.
- Trailing stop levels.
- Automatic exit mechanisms.
- Potential reversal points.
- Risk management assistance.
What Does PSAR Mean?
PSAR stands for:
Parabolic Stop And Reverse
The name reflects the indicator's ability to:
- Provide stop levels.
- Detect trend reversals.
- Follow trends dynamically.
- Create a parabolic curve over time.
Evolution of Parabolic SAR Through the Years
Although originally designed for commodity markets, PSAR has become one of the most versatile indicators used across all financial markets.
- Forex Markets
- Gold Trading (XAUUSD)
- Stock Markets
- Indices
- Cryptocurrency Markets
- Futures Markets
Characteristics of the Parabolic SAR Indicator
| Characteristic | Description |
|---|---|
| Creator | J. Welles Wilder Jr. |
| Introduced | 1978 |
| Category | Trend-Following Indicator |
| Main Purpose | Stop and Reverse Signals |
| Default Step | 0.02 |
| Maximum Step | 0.20 |
How Does the Parabolic SAR Indicator Work?
The Parabolic SAR follows price movement and gradually moves closer to the market as the trend develops.
During an uptrend, the PSAR dots appear below price candles.
During a downtrend, the PSAR dots appear above price candles.
Whenever the dots switch sides, the indicator signals a potential reversal in trend direction.
Parabolic SAR Formula
The Parabolic SAR is calculated using the following formula:
PSAR = Previous PSAR + AF × (EP − Previous PSAR)
Although the formula appears simple, the interaction between the Acceleration Factor and Extreme Point creates the characteristic curved movement that gives the indicator its name.
What Is the Acceleration Factor (AF)?
The Acceleration Factor controls how quickly the PSAR responds to price changes.
- Default value = 0.02
- Increases by 0.02 when a new extreme point is formed.
- Maximum value = 0.20
A higher Acceleration Factor causes the indicator to move closer to price and become more sensitive.
What Is the Extreme Point (EP)?
The Extreme Point represents the highest high during an uptrend or the lowest low during a downtrend.
- Highest high during bullish trends.
- Lowest low during bearish trends.
- Used together with AF in the PSAR formula.
Step Value
The Step value determines how much the Acceleration Factor increases after a new extreme point is established.
Standard Step Value
0.02
Maximum Acceleration Factor
To prevent excessive sensitivity, Wilder limited the maximum Acceleration Factor.
Standard Maximum Value
0.20
Why Is It Called "Parabolic"?
As trends continue, the PSAR accelerates toward price and forms a curved shape that resembles a parabola.
This characteristic gives the indicator its name:
Parabolic Stop And Reverse
Trend Reversal Logic
One of the most important features of PSAR is its automatic reversal mechanism.
- Price moves in a trend.
- PSAR follows the trend.
- Price touches the PSAR.
- Trend reverses.
- Dots switch to the opposite side.
PSAR During Bullish Trends
In an uptrend, PSAR dots appear below the candles.
- Indicates bullish momentum.
- Acts as trailing support.
- Helps traders lock in profits.
PSAR During Bearish Trends
In a downtrend, PSAR dots appear above price candles.
- Indicates bearish momentum.
- Acts as dynamic resistance.
- Helps traders protect profits.
Mathematical Characteristics of PSAR
| Component | Function |
|---|---|
| AF | Controls sensitivity |
| EP | Defines trend extremes |
| Step | Increases acceleration |
| Maximum | Prevents excessive sensitivity |
How to Add Parabolic SAR on MT4 and MT5
The Parabolic SAR indicator is included by default in both MetaTrader 4 and MetaTrader 5.
Installation Steps
- Open MetaTrader 4 or MetaTrader 5.
- Press Ctrl + N to open Navigator.
- Select Indicators.
- Choose Trend Indicators.
- Double-click Parabolic SAR.
- Adjust Step and Maximum values.
- Click OK.
Parabolic SAR Parameters
PSAR contains two adjustable settings.
| Parameter | Default Value |
|---|---|
| Step | 0.02 |
| Maximum | 0.20 |
Default Settings
Wilder recommended the following standard values:
- Step = 0.02
- Maximum = 0.20
These settings remain the industry standard and are used by most traders today.
Best PSAR Settings for Different Trading Styles
| Trading Style | Step | Maximum |
|---|---|---|
| Scalping | 0.01 | 0.10 |
| Intraday Trading | 0.02 | 0.20 |
| Swing Trading | 0.03 | 0.30 |
PSAR for Scalping
Scalpers require higher sensitivity and faster responses.
- Timeframe: M5.
- Step: 0.01.
- Maximum: 0.10.
- Suitable for short-term trades.
PSAR for Swing Trading
Swing traders prefer smoother settings to reduce noise.
- H4 Timeframe.
- Daily Timeframe.
- Step: 0.03.
- Maximum: 0.30.
Parabolic SAR for Gold Trading (XAUUSD)
Gold is highly volatile and PSAR is frequently used to follow trends and manage trailing stops.
- M5 Scalping → Step 0.01.
- M15 Intraday → Step 0.02.
- H1 Trading → Step 0.02.
- H4 Swing Trading → Step 0.03.
PSAR Applications Across Different Timeframes
M5 Timeframe
Popular among scalpers and very short-term traders.
M15 Timeframe
Commonly used by intraday traders.
H1 Timeframe
Balances sensitivity and reliability.
H4 Timeframe
Widely used for swing trading.
Daily Timeframe
Suitable for position traders and investors.
Multi-Timeframe Analysis
Professional traders frequently combine multiple timeframes.
- Daily chart identifies major trends.
- H4 chart determines opportunities.
- H1 chart refines entries.
- M15 chart improves execution timing.
Trend Following with Parabolic SAR
The primary purpose of Parabolic SAR is trend following.
When dots remain below price, the market is considered bullish. When dots move above price, the market is considered bearish.
- Dots below price = Uptrend.
- Dots above price = Downtrend.
- Dot crossover = Potential reversal.
Buy Signals
A bullish signal occurs when PSAR dots move from above the candles to below the candles.
Typical Buy Conditions
- PSAR switches below price.
- Market begins upward momentum.
- Confirmation from RSI or MACD is recommended.
Sell Signals
A bearish signal occurs when PSAR dots move from below price to above price.
Typical Sell Conditions
- PSAR switches above price.
- Market begins downward momentum.
- Additional confirmation improves reliability.
Exit Signals
One of Wilder's original intentions was to provide traders with automatic exits.
- Trend develops.
- PSAR follows price.
- Price reaches PSAR.
- Position is closed.
- Trend reverses.
Parabolic SAR as a Trailing Stop
Many professional traders use PSAR as a dynamic trailing stop.
- Protects profits.
- Allows trends to run.
- Removes emotional decisions.
- Provides systematic exits.
Trend Reversal Signals
PSAR is known for identifying trend reversals.
- Bullish to bearish reversal.
- Bearish to bullish reversal.
- Potential entry opportunities.
Dynamic Support and Resistance
During strong trends, PSAR can behave like dynamic support and resistance.
| Market Condition | PSAR Role |
|---|---|
| Uptrend | Dynamic Support |
| Downtrend | Dynamic Resistance |
Institutional Usage
Although institutions rarely rely on a single indicator, PSAR is frequently incorporated into algorithmic systems and trend-following models.
- Commodity Trading Advisors (CTA).
- Trend-following hedge funds.
- Quantitative systems.
- Portfolio management algorithms.
Practical Example
Bullish Scenario
- PSAR dots move below candles.
- Buy position is opened.
- Dots continue rising.
- Trailing stop follows the trend.
- Trend reverses.
- PSAR dots move above price.
- Position is closed.
False Signals During Sideways Markets
PSAR performs best in trending markets.
During ranging or sideways conditions, frequent dot reversals can produce numerous false signals.
Common Problem
- Whipsaws.
- Frequent reversals.
- False entries.
- Reduced profitability.
Combining Parabolic SAR with RSI
One of the most popular combinations is PSAR with the Relative Strength Index (RSI).
- PSAR identifies trend reversals.
- RSI measures momentum.
- Together they provide stronger confirmations.
Combining PSAR with MACD
MACD identifies trend strength while PSAR provides entry and exit signals.
- MACD confirms the trend.
- PSAR improves timing.
- Reduces false reversals.
Combining PSAR with ATR
ATR measures volatility while PSAR manages trend-following exits.
- ATR determines stop distance.
- PSAR provides trailing stops.
- Excellent risk management combination.
Combining PSAR with Moving Averages
Moving averages identify trend direction while PSAR helps optimize entry and exit timing.
Advantages of Parabolic SAR
- Easy to understand.
- Excellent trend-following tool.
- Provides trailing stops.
- Works on all markets.
- Suitable for multiple timeframes.
- Supports systematic trading.
Disadvantages of Parabolic SAR
- Produces false signals in ranging markets.
- Can react slowly in sudden reversals.
- Should not be used alone.
- Requires confirmation from other indicators.
Common Mistakes Traders Make
- Using PSAR in sideways markets.
- Ignoring higher timeframes.
- Trading every reversal signal.
- Using PSAR without confirmations.
- Overlooking risk management.
Professional Trading Tips
- Combine PSAR with RSI.
- Combine PSAR with MACD.
- Use higher timeframes for confirmation.
- Follow strong trends.
- Avoid ranging markets.
Final Thoughts
Since its introduction in 1978, the Parabolic SAR indicator has remained one of the most respected trend-following tools in technical analysis.
Its ability to provide trend direction, reversal signals and trailing stops makes it extremely valuable for traders and investors.
Today, PSAR continues to be used by retail traders, hedge funds, institutions and algorithmic trading systems worldwide.
Risk Disclaimer
Trading Forex, Gold, Stocks and Cryptocurrencies involves substantial risk and may not be suitable for every investor.
Indicators should be used as supporting tools rather than guarantees of future performance.
Always apply proper risk management and never risk more capital than you can afford to lose.