Nexus Pro

Nexus Pro Developed, Engineered, and Owned by Dr. Marco Catanzaro.

— Forex Hedging & Recovery Engine

A professional-grade Expert Advisor designed for the Forex market, built around a progressive 3-leg hedge and recovery system with institutional-level risk controls.

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1. Executive Summary & Algorithmic Philosophy

Overview

Nexus Pro is an Expert Advisor for MetaTrader 5 that operates on the Forex market using a structured, rule-based approach. Unlike typical grid or martingale systems that expose the account to uncontrolled drawdown, Nexus Pro combines a trend-filtered entry with a progressive recovery engine and a turbo exit leg, all protected by multiple layers of safety logic.

The system is designed to close every trading cycle in profit, while keeping equity drawdown under strict control even during multi-year operations.

Default configuration is optimized for EURUSD on H1, tested with 100% real tick data over a 3-year period. The EA is fully adaptive to any Forex symbol via the standard  _Symbol  reference, but optimal parameters are symbol-specific. Users are encouraged to run dedicated backtests for each instrument before use, or contact the author for guidance on alternative pairs.

Core Strategy — How It Works

Nexus Pro operates in three progressive legs:

Leg 1 — Trend Entry
The EA opens the first position following the direction of a configurable EMA (default: EMA 20 on H1). Entries are restricted to a configurable trading window (default: 08:00–20:00) and blocked when correlated assets are already in recovery mode.

Leg 2 — Controlled Hedge
If Leg 1 enters a predefined loss (default: 1.5% of balance) and price has moved a minimum geometric distance, the EA opens a counter-direction position with a controlled multiplier (default: 1.6x). This leg is designed to stabilize the cycle, not to recover aggressively.

Leg 3 — Turbo Exit
If price continues against the cycle, a third leg opens with an aggressive multiplier (default: 2.0x) applied to the dominant volume. This leg accelerates the cycle toward its profit target, allowing a faster closure with a smaller retracement.

Each cycle closes automatically when a predefined profit target is reached, based on account balance, number of open positions, and current cycle stage.

Key Features

• Progressive 3-leg recovery system with fully configurable multipliers

• EMA trend filter on configurable timeframe (default H1)

• Session time filter (default 08:00–20:00 server time)

• Multi-Asset Shield: prevents opening new cycles on the current chart when another EA instance (different Magic Number) is already in recovery mode — a portfolio-level risk control

• Margin safety cap: uses  OrderCalcMargin()  to limit exposure as a percentage of account balance

• Pre-trade fund verification:  CheckMoneyForTrade()  checks free margin before every order, preventing server-side rejections in both backtest and live environments

• Emergency drawdown kill switch: blocks the EA permanently when a user-defined drawdown threshold is reached (default 50%)

• Optional percent-based Stop Loss for each leg (OFF by default to preserve hedging logic)

• Fixed or percent-based lot sizing

• Graphic dashboard displaying balance, equity, floating P/L, open positions, cycle target, session status and shield state in real time

• Unique Magic Number for multi-chart, multi-symbol operation

• Dynamic Margin Protection: before every order, the EA calculates the resulting Margin Level and blocks the trade if it would fall below a configurable safety threshold (default 200%). This prevents Stop Outs on high-margin instruments without altering the strategy on EURUSD.

Backtest Results — EURUSD H1

Broker: Pepperstone UK Demo
Period: 2023.09.01 – 2026.09.06 (3 years)
Model: 100% real ticks
Initial deposit: 2,000 EUR
Leverage: 1:33
Symbol: EURUSD
Timeframe: H1

All costs included: broker commissions (-10.74 EUR), overnight swaps (net -30.74 EUR), and spread embedded in execution prices. The backtest report is fully reproducible and clean.

Risk Profile

Nexus Pro is not a high-frequency scalper and not a high-risk martingale. It is a low-frequency, structured recovery system that typically executes 20–25 trades per year on EURUSD H1.

The equity drawdown in the reference backtest remained under 7% over three years of continuous operation. The built-in safety layers (margin cap, fund check, multi-asset shield, drawdown kill switch) are designed to prevent catastrophic scenarios.

Recommended minimum deposit: 2,000 EUR with 0.01 initial lot, to respect the ratios used in the reference backtest.

Recommended Setup

• Symbol: EURUSD

• Timeframe: H1

• Broker: ECN or low-swap account recommended (to reduce overnight swap erosion)

• Leverage: 1:30 or higher (1:33 used in reference test)

• VPS: strongly recommended for continuous operation

• Magic Number: unique for each chart when running multiple instances

Input Parameters

Identification

• InpMagicNumber  — Unique identifier per chart (default: 123456)

Lot Settings

• InpUsePercentLot  — Enable percent-based lot sizing (default: false)

• InpFixedLot  — Fixed initial lot size (default: 0.01)

• InpRiskPercent  — Risk percent for initial lot, if percent mode (default: 1.5)

• InpMaxMarginPercent  — Margin safety cap as % of balance (default: 15.0)

Safety (optional)

• InpUseStopLossPercent  — Enable per-leg percent Stop Loss (default: false)

• InpStopLossPercent  — SL percent (default: 3.0)

• InpMaxDrawdownPercent  — Emergency drawdown kill switch (default: 50.0)

Target Settings

• InpTargetPercent  — Profit target as % of balance for Leg 1 (default: 2.0)

Forex Recovery System

• InpTriggerLossPercent  — Loss % to trigger Leg 2 (default: 1.5)

• InpLotMultiplier  — Leg 2 lot multiplier (default: 1.6)

• InpMinDistancePoints  — Minimum distance in points between legs (default: 120)

Super Leg 3 (Turbo Exit)

• InpGamba3Multiplier  — Leg 3 lot multiplier (default: 2.0)

Trading Time Filter

• InpStartHour  — Session start hour (default: 8)

• InpEndHour  — Session end hour (default: 20)

Trend Filter

• InpEMAPeriod  — EMA period (default: 20)

• InpTimeframe  — EMA timeframe (default: H1)

What Makes Nexus Pro Different

• No blind martingale. Recovery multipliers are moderate (1.6x / 2.0x) and controlled by margin caps.

• No fixed symbol lock. The EA adapts to any Forex symbol via  _Symbol , though optimal parameters are symbol-specific.

• No hidden risk. Every safety layer is configurable and visible in the input panel.

• No server rejections. Fund verification happens before every order.

• Full transparency. All costs (commission, swap, spread) are included and reproducible in the reference backtest.

Recommendations Before Live Use

1. Run your own backtest on your broker's data before going live.

2. Test on demo for at least 2–3 months with the recommended settings.

3. Use a VPS to ensure uninterrupted execution.

4. Start with minimum lot (0.01) and scale up only after observing live behavior.

5. For non-EURUSD symbols, contact the author or run dedicated optimization.

6. Monitor swap costs — a swap-free account may improve long-term performance.

Support

The author provides support for installation, initial configuration, and guidance on parameter selection for EURUSD. For optimization on other instruments, please contact the author directly before purchasing.

Disclaimer

Trading Forex and CFDs involves substantial risk of loss and is not suitable for every investor. Past performance does not guarantee future results. This Expert Advisor is an automation tool and does not guarantee profits. Use only capital you can afford to lose. Always test thoroughly on a demo account before deploying on a live account.

Copyright 2026 — Dr. Marco Catanzaro
Nexus Pro v1.0