Multi_Lot_Scalper
A scalping EA that employs a martingale-style multi-lot progression strategy, doubling or increasing lot sizes after losing trades to recover losses. It enters positions based on simple technical signals and relies on the increasing position sizes to eventually close in profit when the market reverses. The EA is designed for short-term trades with small take-profit targets but carries significant risk due to its martingale position sizing.
Open the interactive view (equity curve, symbol switch)Key facts
Backtest results (H1, about 1 year)
| Symbol | P&L | Annual | Max DD | Trades | Win rate | Sharpe | Recovery | Losing streak | Per trade | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| EURUSD | -1.25% | -1.09% | 3.75% | 108 | 49.50% | -0.31 | -0.33 | 7 | −$0.85 | Reliable |
| GBPUSD | +4.66% | +4.04% | 4.47% | 107 | 50.50% | 0.85 | 1.04 | 8 | +$4.35 | Reliable |
| USDJPY | +1.90% | +1.65% | 4.63% | 96 | 46.90% | 0.43 | 0.41 | 6 | +$1.98 | Reliable |
| XAUUSD | +46.60% | +37.17% | 39.32% | 98 | 55.70% | 0.84 | 1.19 | 4 | +$50.60 | Reliable |
Profitable on 3 of 4 markets with reliable results.
Converted from MQL5 to Python and run with the same rules for every EA. Positions use MT5 lot sizes (100,000 units per FX lot, 100 oz per gold lot) with 1:100 leverage, one order at a time, and a stop-out below 10% of the starting balance. Sharpe is computed from the equity curve. Results marked as unreliable are shown for completeness only.
Against the other Martingale EAs with a reliable result on the same market: EURUSD: better than 56% of 16 · GBPUSD: better than 73% of 15 · USDJPY: better than 50% of 16 · XAUUSD: better than 50% of 16
Month by month
| Market | Months with a gain | Best month | Worst month |
|---|---|---|---|
| EURUSD | 46% | +2.71% 2026-04 | -1.84% 2026-01 |
| GBPUSD | 69% | +2.70% 2026-04 | -2.61% 2026-10 |
| USDJPY | 46% | +2.80% 2026-04 | -1.92% 2026-03 |
| XAUUSD | 54% | +31.81% 2026-02 | -14.22% 2026-05 |
From the backtest equity curve, sampled about every two days; only reliable results.
Blow-up risk: Elevated
- Increases the position size after losses (martingale)
High: stopped out in our backtest, or martingale/grid sizing without a stop loss. Elevated: martingale or grid sizing with a stop loss, or several positions at once without a stop loss. What the label means and what we found →
Strategy analysis
The strategy concept is based on the martingale principle: increasing lot size after each loss, expecting a single win to recover all previous losses. Entry conditions likely rely on simple technical indicators such as moving average crossovers or RSI overbought/oversold levels to identify short-term price reversal points. Exit conditions typically use a fixed take-profit in pips target, while stop-loss may be absent or set very wide to avoid premature stop-outs. Position sizing is the core feature: starting with a small initial lot, each loss triggers a multiplication or fixed-ratio increase in lot size, forming the classic 1-2-4-8 martingale sequence. Money management lacks effective maximum position limits or maximum drawdown protection, exposing the account to margin call risk during consecutive losing streaks. The overall strategy may perform well in ranging markets but can cause catastrophic losses during strong trending conditions.
Strengths
- Can generate steady profits in ranging markets where small TP targets are easily hit
- Martingale progression theoretically recovers all previous losses with a single winning trade
- Simple and intuitive parameters allow users to quickly configure and adjust settings
Weaknesses
- Martingale strategy can lead to account blow-up during strong trending markets
- Absence of stop-loss exposes the account to unlimited downside risk
- Exponential lot growth quickly hits broker maximum lot limits or insufficient margin
- Extreme psychological and financial pressure during consecutive losing streaks
Possible improvements
- Add strict maximum drawdown protection that halts trading when drawdown exceeds a threshold
- Implement effective stop-loss logic instead of relying purely on martingale recovery
- Incorporate a trend filter to pause martingale position increases during strong trending markets
Risk assessment
Overall risk: Dangerous
- Martingale position progression can lead to account blow-up during consecutive losses
- No effective stop-loss means a single trade loss can exceed account tolerance
- No maximum position count limit allows exponential lot size growth
Evaluation scores
Parameters
| Parameter | Default | Description |
|---|---|---|
InitialLot | 0.01 | Initial lot size |
LotMultiplier | 2.0 | Lot multiplier after loss |
TakeProfit | 10 | Take profit in points |
StopLoss | 0 | stop losspoints (0meansnostop loss) |
MaxLots | 10.0 | Maximum allowed lot size |
MagicNumber | 12345 | EA magic number identifier |
Similar Martingale EAs
Backtests are historical simulations and do not guarantee future results. Not financial advice.