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Gold M15 Trend Pullback EA (UT Bot + EMA50/200 + MACD + Volume + ATR + News Filter + Institutional Risk Model)

MQL5 Эксперты

Техническое задание

I need an MT5 Expert Advisor for XAUUSD on the M15 timeframe, based strictly on the following trading rules.
This EA is for personal use. Please provide clean and well-commented MQL5 source code.

⸻

1. Basic setup (timeframe & indicators)

Main trading timeframe
• EA runs on: M15 only
• Higher timeframes (M30/H1) are for manual reference only; no multi-TF logic is required in V1.

Indicators used
• EMA50 (short-term trend) – blue
• EMA200 (long-term trend) – red
• MACD
• Main line – blue
• Signal line – orange
• Histogram – green (bullish), red (bearish)
• Inputs: Fast=12, Slow=26, Signal=9
• Volume: tick volume
• With SMA20 of volume (blue line)
• ATR14 (for volatility, SL, trailing)

Colors are for visual consistency only (no need to enforce colors in code).

⸻

2. Pre-entry 6-step filter

(Checks are only performed after a UT Bot signal appears.)

Step 1 – Trend filter (EMA50 vs EMA200)
• If EMA50 > EMA200 → uptrend → EA is allowed to open Buy only
• If EMA50 < EMA200 → downtrend → EA is allowed to open Sell only
• If EMAs are very close and frequently crossing (sideways) → no trades

Implementation suggestion:
You may add a parameter like Min_EMA_Distance (in points) to avoid trading when EMAs are almost overlapping.

⸻

Step 2 – UT Bot signal (direction only)
• UT Bot Buy → potential Buy setup
• UT Bot Sell → potential Sell setup
• EA must NOT enter immediately; UT Bot is only the 1st directional filter.

UT Bot logic requirements
• ATR-based logic similar to TradingView “UT Bot Alerts”
• Inputs:
• UT_ATR_Period
• UT_ATR_Multiplier
• UT_Sensitivity

Important implementation rules
• Signals must be generated and confirmed on bar close only (no intra-bar repaint).
• EA should react only to new UT Bot signals (max one Buy/Sell signal per bar).

⸻

Step 3 – MACD momentum confirmation

For Buy:
• MACD main (blue) crosses above signal (orange) → golden cross
• Histogram turns green
• Main line direction is upwards

For Sell:
• MACD main crosses below signal → dead cross
• Histogram turns red
• Main line direction is downwards

Conflict rule (no trade):

If:
• UT Bot gives Buy but MACD is clearly bearish (red histogram, main pointing down), or
• UT Bot gives Sell but MACD is clearly bullish (green histogram, main pointing up),

→ signals are conflicting → no trade is allowed.

⸻

Step 4 – Volume filter (avoid fake breakouts)

Use tick volume with SMA20:
• Let VolCurrent = current volume bar
• Let VolMA = SMA(20) of volume

Entry is allowed only if:

VolCurrent >= VolMA * Volume_Min_Ratio

• Volume_Min_Ratio default = 1.2

If current volume is much lower than VolMA → low liquidity → no trade.

Inputs:
• Volume_MA_Period = 20
• Volume_Min_Ratio = 1.2 (user-adjustable)

⸻

Step 5 – ATR volatility filter (M15 only)

EA runs on M15.
• Use ATR_Period = 14 on M15.
• Input: ATR_Min (default 6.0, in USD per 1.0 lot price movement).

If:

ATR(14) < ATR_Min  →  no new trades (market is too flat)

If ATR is extremely large, the risk-based position sizing (section 7) will naturally reduce the lot size (because SL distance is larger).

Inputs:
• ATR_Period = 14
• ATR_Min = 6.0 (default)

⸻

Step 6 – Major news filter

No new trades are allowed X minutes before and after major news.
Existing open trades should be managed normally (SL/TP/trailing still active).

News types to block:
• CPI, Core CPI, Core PCE
• NFP (Non-Farm Payrolls)
• FOMC rate decision
• FOMC meeting minutes
• Fed Chair speech (Powell)
• Unemployment rate
• Other manually specified high-impact events

V1 simple implementation
• Use a manual string input with semicolon-separated news times in server time:

Example:

NewsTimes = "2025.11.14 21:30;2025.11.14 23:00;2025.11.15 21:30"

Inputs:
• UseNewsFilter (true/false)
• NewsTimes (string, server time, format “yyyy.MM.dd HH:MI;…”)
• MinutesBefore = 30
• MinutesAfter  = 60

If current server time TimeCurrent() is within:

[newsTime - MinutesBefore,  newsTime + MinutesAfter]

→ Block new entries.

Note: user must input times according to the broker server time zone.

⸻

3. Pullback entry filter (do not chase price)

After UT Bot signal and all 6 filters above pass,
EA must wait for a pullback before opening a position.

Entry is allowed if ANY of the following is satisfied:

A) Pullback to EMA50 (trend pullback zone)

Inputs:
• EMA50_Pullback_Tolerance = 1.0 (in USD, e.g. ±1.0 around EMA50)

Buy:
• Recent price low touches a zone EMA50 ± tolerance
• Then price turns up (e.g. current close > previous close)
→ Enter Buy

Sell:
• Recent price high touches EMA50 ± tolerance
• Then price turns down
→ Enter Sell

⸻

B) Pullback to 50% midpoint of UT Bot signal candle

Example: UT Bot Sell candle:
• High = 4200
• Low = 4180
• Midpoint = (High + Low) / 2 = 4190

Inputs:
• Midpoint_Pullback_Tolerance = 1.0 (USD)

Sell:
• After signal, price retraces back to Midpoint ± tolerance
→ Enter Sell

Buy: same logic in opposite direction.

⸻

C) MACD pullback & re-expansion

Buy:
• After MACD golden cross, main line pulls back toward signal line (distance decreases),
• Then turns upwards again and the distance widens
→ Enter Buy

Sell:
• After dead cross, main line pulls back toward signal,
• Then turns down and widens again
→ Enter Sell

Inputs:
• Enable_EMA50_Pullback = true
• Enable_Midpoint_Pullback = true
• Enable_MACD_Pullback = true

EA should allow enabling/disabling each type of pullback independently.
At least one enabled condition must be satisfied for an entry.

⸻

4. Stop Loss (SL) – ATR based

SL is defined in USD terms per 1.0 lot:

SL_Size_USD = ATR(14) * SL_Multiplier

Inputs:
• SL_Multiplier default range: 1.5 – 2.0

Example, ATR = 12.6:
• Normal SL: 12.6 × 1.5 ≈ 18.9 USD
• Conservative SL: 12.6 × 2.0 ≈ 25.2 USD

Price-level SL:
• Buy: SL = EntryPrice − SL_Size_USD
• Sell: SL = EntryPrice + SL_Size_USD

(Using XAUUSD where 1.0 price = 1 USD.)

⸻

5. Take Profit (TP) – Risk/Reward based

TP is defined as a multiple of SL:

TP_Size_USD = SL_Size_USD * RR_Ratio

Inputs:
• RR_Ratio (default 1.5–2.0)

Example:
• SL_Size_USD = 20
• TP at 1.5R → 30 USD
• TP at 2.0R → 40 USD

Price-level TP:
• Buy: TP = EntryPrice + TP_Size_USD
• Sell: TP = EntryPrice − TP_Size_USD

⸻

6. Profit protection – Dynamic trailing using ATR

Inputs:
• BE_ATR        = 1.0  (move SL to BE after +1 ATR profit)
• Trail_Step_ATR = 0.5 (trailing step)
• Trail_Move_ATR = 0.3 (how much SL moves per step)

Logic:
1. When floating profit ≥ BE_ATR × ATR
→ Move SL to break-even (entry price).
2. For each additional Trail_Step_ATR × ATR profit
→ Move SL forward by Trail_Move_ATR × ATR in the trade direction.

This gradually locks in more profit as the trend continues.

⸻

7. Position sizing – Institutional risk-based model

Goal: each trade risks a fixed % of account balance,
regardless of SL distance (ATR size).

Inputs:
• RiskPercent = 0.01 (1% per trade, default; can also use 0.005 for 0.5%)
• MinLot / MaxLot (according to broker)
• Lot step should respect broker’s SYMBOL_VOLUME_STEP

Steps:
1. Compute RiskAmount in USD:

RiskAmount = AccountBalance * RiskPercent

2. Compute SL distance in USD per 1.0 lot:

SL_Distance_USD = ATR(14) * SL_Multiplier    // same SL as section 4

3. Compute TickValue and Point size:

TickValue = SymbolInfoDouble(_Symbol, SYMBOL_TRADE_TICKVALUE);
PointSize = SymbolInfoDouble(_Symbol, SYMBOL_POINT);

(For XAUUSD brokers, typically 0.01 price step and TickValue ≈ 1 USD per 0.01 move, but EA should not hard-code this.)
4. Convert SL to points:

SL_Points = SL_Distance_USD / PointSize;

5. Institutional lot size formula:

LotSize = RiskAmount / (SL_Points * TickValue);

6. Safety adjustments:

if (LotSize < MinLot) LotSize = MinLot;
if (LotSize > MaxLot) LotSize = MaxLot;

// round to broker lot step
double lotStep = SymbolInfoDouble(_Symbol, SYMBOL_VOLUME_STEP);
LotSize = MathFloor(LotSize / lotStep) * lotStep;

Result: every trade’s maximum loss ≈ RiskPercent × Balance,
regardless of ATR/SL distance.

⸻

8. Additional safety rules (recommended)

Add two global protections:
1. Daily max loss (drawdown stop)

Inputs:
• UseDailyLossLimit = true
• DailyLossPercent = 0.03 (3% of balance per day, default)

Logic:
• Track realized P/L for the current day.
• If daily loss ≤ −Balance × DailyLossPercent →
→ Stop opening new trades for the rest of the day.

2. Max trades per day

Inputs:
• MaxTradesPerDay = 3 (default)

Logic:
• Count number of opened trades during the current broker day.
• If tradesToday >= MaxTradesPerDay → no new trades.

⸻

9. Final checklist (EA entry summary)

A Buy trade is opened only if ALL of the following are true:
1. EMA50 > EMA200 → long-only regime.
2. New UT Bot Buy signal on closed bar.
3. MACD is bullish (golden cross + green histogram + main up).
4. Volume >= VolumeSMA20 × Volume_Min_Ratio.
5. ATR >= ATR_Min.
6. Current time is outside any blocked news window.
7. At least one pullback condition is satisfied
(EMA50 / midpoint / MACD pullback, respecting tolerances).
8. Lot size is calculated using the RiskPercent model, and is within [MinLot, MaxLot].
9. Daily loss limit and MaxTradesPerDay are not violated.

A Sell trade is the exact mirror:
• EMA50 < EMA200
• UT Bot Sell
• MACD bearish (dead cross + red histogram)
• Volume/ATR/News filters pass
• Pullback in short direction
• Position sizing & safety checks identical

⸻

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