Greg EA — greg_regime_risk_v2

Version: 2.0
Type: MetaTrader 5 Expert Advisor (MQL5)

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Overview

Greg EA is a trend-following expert advisor that combines:

• EMA crossover (fast vs. slow) for trend direction
• RSI pullback confirmation — only enters on RSI retraces toward centerline
• ADX filter — trend strength confirmation (optional)
• ATR-based risk management — dynamic SL/TP sizing
• Volatility-regime awareness (v2) — adapts SL/TP multipliers based on current market volatility
• Guardrails — daily loss limits, consecutive loss limits, session filters, spread checks
• Trailing stop with breakeven (risk-free) trigger
• Live dashboard — real-time chart comment with equity, P&L, regime, and position info

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Strategy Logic

Entry Signal

1. Trend: Fast EMA > Slow EMA → bullish; Fast EMA < Slow EMA → bearish
2. RSI pullback: RSI must cross/pull back toward the centerline (50) in the direction of the trend:
   • Buy: RSI >= RSI_Buy_Min (default 50) AND RSI rising (RSI[1] > RSI[2])
   • Sell: RSI <= RSI_Sell_Max (default 50) AND RSI falling (RSI[1] < RSI[2])
3. ADX filter (optional): ADX >= ADXMin to confirm trend is directional

Risk Management

• Position size = % of equity × RiskPercent (based on SL distance)
• Stop Loss and Take Profit sized in ATR multiples
• Hard cap on maximum lot size (MaxLotsCap)

Trailing & Breakeven

• When reward:risk >= BeThreshold, SL moves to entry (risk-free)
• Standard ATR-based trailing stop activates after that

Guardrails

• Max daily loss (% of equity)
• Max consecutive losses
• Max spread filter
• Session time filter

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Volatility Regime System (v2)

The core new feature in v2. The EA classifies the current market volatility into one of three regimes using the ATR percentile method:

How It Works

1. Collect the last 100 bars of ATR values (configurable via VolRegimeLookback)
2. Sort them to find the 33rd and 66th percentile values
3. Compare the current bar's ATR against these thresholds:
   • LOW — ATR below 33rd percentile (quiet market)
   • MID — ATR between 33rd and 66th percentile (normal market)
   • HIGH — ATR above 66th percentile (volatile market)

Adaptive SL/TP Multipliers

The EA adjusts its SL and TP distances based on the detected regime:

Regime	ATR SL Mult	ATR TP Mult	Rationale
LOW	1.5× (tight)	2.5×	Quiet markets need tighter stops; smaller targets
MID	2.0× (default)	3.0×	Normal conditions — standard behavior
HIGH	2.5× (wide)	4.0×	Volatile markets need room; larger targets to avoid premature exits

These are configurable via the input parameters.

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Input Parameters

Core Strategy

Parameter	Default	Description
SignalTF	H1	Chart timeframe for signals
FastEMA	20	Fast EMA period
SlowEMA	200	Slow EMA period
RSIPeriod	14	RSI period
ADXPeriod	14	ADX period
UseADXFilter	true	Require ADX above ADXMin
ADXMin	18.0	Minimum ADX for signal
RSI_Buy_Min	50.0	Min RSI for buy signal
RSI_Sell_Max	50.0	Max RSI for sell signal

Risk / Trade Management

Parameter	Default	Description
RiskPercent	0.5%	Equity risk per trade
ATRPeriod	14	ATR period
UseTrailingStop	true	Enable ATR trailing stop
ATR_Trail_Mult	1.2	Trailing stop ATR multiplier
MaxLotsCap	1.0	Hard cap on lot size
OnePositionPerSymbol	true	Only one open position per symbol

Volatility Regime (v2)

Parameter	Default	Description
UseVolatilityRegime	true	Enable regime-adaptive SL/TP
VolRegimeLookback	100	Bars for ATR percentile lookback
VolLowThreshold	0.33	Percentile below = LOW regime
VolHighThreshold	0.66	Percentile above = HIGH regime
ATR_SL_Mult_LOW	1.5	SL multiplier (LOW vol)
ATR_TP_Mult_LOW	2.5	TP multiplier (LOW vol)
ATR_SL_Mult_MID	2.0	SL multiplier (MID vol)
ATR_TP_Mult_MID	3.0	TP multiplier (MID vol)
ATR_SL_Mult_HIGH	2.5	SL multiplier (HIGH vol)
ATR_TP_Mult_HIGH	4.0	TP multiplier (HIGH vol)

Guardrails

Parameter	Default	Description
MaxDailyLossPercent	2.0%	Stop trading after this daily loss
MaxConsecutiveLosses	4	Pause after this many consecutive losses
MaxSpreadPoints	50.0	Max spread to allow trades
UseSessionFilter	true	Enable trading hours filter
SessionStartHour	7	Session start (broker time)
SessionEndHour	16	Session end (broker time)

Breakeven

Parameter	Default	Description
BeThreshold	1.5	Move SL to entry when R:R >= this

Misc

Parameter	Default	Description
Magic	13022026	Magic number for position identification
DebugLogs	false	Enable verbose debug printing
ShowDashboard	true	Show chart comment dashboard

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Installation

1. Copy greg_regime_risk_v2.mq5 to:

   <MetaTrader 5 Data Folder>/MQL5/Experts/Greg/
   

2. In MetaTrader 5, open the Navigator panel → Expert Advisors
3. Find greg_regime_risk_v2 under the Greg folder
4. Drag onto a chart or double-click to attach
5. Configure inputs as desired and click OK

For backtesting, attach the EA to a chart of the desired symbol/timeframe, then run the Strategy Tester (Ctrl+R).

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Dashboard (Chart Comment)

The EA prints a live dashboard showing:

Greg EA v2.0 | US500
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Equity:   125000.00
Balance:  124500.00
Daily P&L: -320.00 (-0.26%)
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Signal:   BUY
ATR(14):  12.50000
Vol Regime: MID  (50.0%tile)
SL Mult:  2.0  TP Mult:  3.0
Risk:     0.5%
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Consecutive Losses: 2
Max Daily Loss: 2.0%
Max Consec Loss: 4
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Position: Long 0.50 lots @ 5420.50 | P&L: 125.30

The Vol Regime line shows the current ATR-based volatility classification and its percentile rank. The SL/TP multipliers shown are the effective ones for the current regime.

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Files

File	Description
greg_regime_risk_v1.mq5	Original EA without volatility regime
greg_regime_risk_v2.mq5	Current — adds volatility-regime SL/TP adaptation
README.md	This documentation

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Regime Logic Reference

The regime detection is derived from Phase1 (ATR volatility regime detector):

LOW  = current_ATR < 33rd percentile of last 100 ATR values
MID  = 33rd <= current_ATR <= 66th percentile
HIGH = current_ATR > 66th percentile

This approach is robust because:

• It adapts to the instrument's own volatility history (no fixed thresholds)
• Percentile ranking is relative — works the same on volatile instruments like crude as on calm ones like EUR/USD
• The VolLowThreshold and VolHighThreshold inputs allow tuning the sensitivity