Parabolic SAR Trading System

The Parabolic Stop and Reverse (SAR) is a trend-following indicator that provides potential entry and exit points, acting as a dynamic trailing stop.

How Parabolic SAR Works


The Dots

• Dots appear below price during uptrends
• Dots appear above price during downtrends
• When dots flip sides = potential trend reversal
• Dots accelerate toward price over time

The Acceleration Factor

• Starts at 0.02 (default)
• Increases by 0.02 each time a new high/low is made
• Maximum acceleration: 0.20 (default)
• Higher acceleration = dots closer to price = tighter stops

Reading the Signals

Buy Signal

• Dots flip from above price to below
• Confirms uptrend beginning
• Enter long at the candle where dots switch
• Use the SAR dot as your trailing stop

Sell Signal

• Dots flip from below price to above
• Confirms downtrend beginning
• Enter short at the candle where dots switch
• Use the SAR dot as your trailing stop

Trailing Stop Management

• SAR dot moves with each new candle
• In uptrend: dot rises, never falls
• In downtrend: dot falls, never rises
• Exit when price touches the dot

Trading Strategies

Pure SAR Strategy

1. Enter long when dots flip below price
2. Hold until dots flip above price
3. Then reverse: go short
4. Always in the market (reversal system)
5. Works best in strongly trending markets

SAR + Trend Filter Strategy

1. Determine main trend with 200 EMA
2. Price above 200 EMA: Only take SAR buy signals
3. Price below 200 EMA: Only take SAR sell signals
4. This filters out many false reversals
5. Significantly improves win rate

SAR for Exit Management Only

1. Enter trades using your preferred method
2. Use SAR dots purely as a trailing stop
3. Move stop to SAR dot level each period
4. Captures big trends while protecting profits
5. No decision-making needed for exits

Optimizing Settings

Conservative Settings (0.01, 0.10)

• Dots further from price
• Fewer false signals
• Wider stops, larger drawdowns
• Better for volatile markets

Aggressive Settings (0.03, 0.30)

• Dots closer to price
• More frequent signals
• Tighter stops, smaller individual losses
• Better for less volatile, trending markets

Limitations

When SAR Fails

• Ranging/choppy markets cause constant whipsaws
• Each flip generates a losing trade in sideways markets
• No way to set a fixed stop loss (SAR starts far from entry)
• Initial risk can be large when trend starts

Solutions

• Combine with ADX: Only trade SAR when ADX > 25
• Use moving average filter for trend direction
• Skip signals in known consolidation zones
• Use on higher timeframes for fewer false signals

Key Takeaways

1. SAR dots below price = uptrend, above = downtrend
2. Dot flips signal potential reversals
3. Best used as a trailing stop system
4. Combine with trend filters to avoid whipsaws
5. Works best in trending markets, avoid in ranges