BandSnap
- Experts
- Version: 1.0
- Activations: 5
BandSnap Grid EA is a professional mean-reversion Expert Advisor
for MetaTrader 5 that identifies high-probability price snap-back
opportunities using Bollinger Bands, then protects your capital
with a smart grid recovery system.
The strategy is simple and proven: when price spikes outside the
Bollinger Bands and immediately closes back inside, it signals an
exhausted move that is likely to reverse. BandSnap enters at this
exact moment — the snap-back — and targets a clean 50-pip recovery.
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HOW IT WORKS
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STEP 1 — SIGNAL DETECTION
Price closes outside Bollinger Bands(35, 1.8), then the next bar
closes back inside. This two-bar pattern confirms the spike was a
temporary overextension — not a genuine breakout.
STEP 2 — QUALITY FILTERS (5 layers)
- RSI Speed Filter: RSI must not move more than 15 points per bar
- RSI Direction Gate: RSI below 45 for BUY, above 55 for SELL
- ADX Trend Filter: ADX must be below 25 (ranging market only)
- H4 Trend Alignment: H4 EMA(50) slope must not oppose the signal
- Volatility Spike Filter: StdDev(36) below 2x its 100-bar average
STEP 3 — GRID RECOVERY
If price moves against the entry, the smart grid activates:
- New positions open every 35-50 pips (Smart Distance via ATR)
- All positions share one weighted-average Take Profit
- Grid Hard Stop closes everything if loss exceeds 2.5% of balance
- Maximum 5 grid levels in Low Risk mode
STEP 4 — EXIT MANAGEMENT
- Break-even moves SL to entry after 8 pips profit
- Trailing Stop follows price after 10 pips profit
- Weighted TP recalculates after each new grid level opens
- All positions closed before weekend (Friday 23:00)
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BACKTEST RESULTS (2020-2025)
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- Profit Factor: 1.32
- Win Rate: 77.51%
- Long Win Rate: 77.69%
- Short Win Rate: 77.30%
- Sharpe Ratio: 1.54
- Max Drawdown: 2.97%
- Recovery Factor: 2.96
- Total Trades: 716
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DEFAULT SETTINGS (from your inputs)
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Risk Profile: RISK_LOW
Pairs: EURUSD / AUDUSD / AUDCAD
Timeframe: M15
Dynamic Lot: true (0.5% risk per trade)
Fixed Lot: 0.01
Max Lot Per Level: 0.10
Grid Distance: 35 pips (ATR auto-adjust ON)
Max Grid Levels: 9 (Custom) / 5 (Low Risk)
2nd Level Mult: 1.0x
3rd-5th Level Mult: 1.5x
6th+ Level Mult: 1.2x
Stop Loss: 60 pips (initial trade only)
Take Profit: 50 pips (weighted avg entry)
Trailing SL: ON — activates at 10 pips profit
Break-Even: ON — activates at 8 pips profit
BB Period: 35 | Deviation: 1.8
RSI Period: 20 | Max Delta: 15
RSI BUY zone: below 45
RSI SELL zone: above 55
ADX Max: 25
H4 EMA Period: 50
Grid Hard Stop: 2.5% of balance per pair
Daily Loss Limit: 5.0%
Max Float DD: 15.0%
Equity Stop: 20.0%
Spread Filter: 30 points max
Magic Number: 100001
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RECOMMENDED SETTINGS BY ACCOUNT SIZE
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$200 - $500 account:
Risk Profile = RISK_LOW
Dynamic Lot = false
Fixed Lot = 0.01
Max Float DD = 15%
Daily Loss = 5%
Equity Stop = 20%
$500 - $2000 account:
Risk Profile = RISK_LOW
Dynamic Lot = true
Risk % = 0.5
Max Float DD = 15%
$2000+ account:
Risk Profile = RISK_HIGH
Dynamic Lot = true
Risk % = 0.5
Max Float DD = 20%
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INSTALLATION
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1. Copy BandSnap Grid EA.ex5 to MetaTrader5/MQL5/Experts/
2. Restart MetaTrader 5
3. Open a EURUSD M15 chart
4. Drag the EA onto the chart
5. Enable Algo Trading in the MT5 toolbar
6. Set your 3 pairs in Pair1/Pair2/Pair3 inputs
7. The EA trades all 3 pairs automatically from one chart
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FREQUENTLY ASKED QUESTIONS
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Q: Does it need a VPS?
A: Not required for M15. A PC running MT5 works fine.
A VPS is recommended if you cannot keep your PC on 24/5.
Q: Which broker should I use?
A: Any MT5 broker with spreads below 15 points on EURUSD.
ECN accounts with low commission are preferred.
Q: How many trades per day?
A: Typically 4-8 signals per day across all 3 pairs combined.
Q: Is it safe for small accounts?
A: Yes. Low Risk mode limits maximum grid to 5 levels with
flat lot sizing. Grid Hard Stop at 2.5% protects capital.
Q: Does it use Martingale?
A: No. Low Risk mode uses flat lots (1.0x multiplier).
High Risk uses moderate multipliers (1.5x on levels 3-5).
Q: What is the minimum deposit?
A: $200 USD with Risk_Low mode and 0.01 fixed lot.
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RISK WARNING
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Trading foreign exchange carries a high level of risk and may
not be suitable for all investors. Past performance is not
indicative of future results. Only trade with capital you can
afford to lose. Always test on a demo account before going live.
