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My name is Park Sung Chan, a developer specializing in MetaTrader 5 algorithmic trading systems.
I design and research long-term, reliable automated trading models based on the structural characteristics and statistical patterns of financial markets.
Rather than building simple trading strategies, I focus on interpreting the market from multiple perspectives and developing high-level algorithmic frameworks that can adapt and evolve over time.
🔥 Introduction to the NEXA EA Project (Strategy Ecosystem)
The NEXA EA Project is an expandable strategy-development program built upon my research philosophy.
Its goal is not to create a single EA, but to establish a sustainable and stable automated trading ecosystem.
Each strategy is designed from various market perspectives—trend, swing, volume, volatility, and more—and developed through long-term backtesting and structural validation processes.
🔧 Expertise
• Structural market analysis based on Trend / Swing / Volatility / Breakout models
• Algorithm design focused on reproducibility with 3–10 year long-term backtests
• Drawdown reduction and risk-structure optimization
• Multi-timeframe system architecture with refined entry logic
• Technical support for users across 11 countries worldwide
In addition, I continuously conduct internal research projects to build more advanced automated trading frameworks, strengthening the reliability and structural integrity of future strategies.
(Core engines and internal technologies are not publicly disclosed.)
🎯 Development Philosophy
For me, an EA is not just a “trading script,” but a structural model that continually adapts to market changes.
I follow four essential principles:
✔ Stability
A robust framework that remains steady despite market fluctuations.
✔ Clarity
Clear, intuitive, and elegant algorithmic design.
✔ Consistency
Performance that can be reproduced and maintained over long periods.
✔ Evolution
Continuous research and improvement to evolve the strategy.
This philosophy is the foundation of the entire NEXA EA lineup, where every system is designed with a focus on long-term survivability rather than short-term results.
🌍 NEXA EA — Long-Term Strategy Ecosystem
NEXA EA is a long-term algorithmic ecosystem that grows and improves over time.
Each EA functions as an independent strategy, while simultaneously forming part of a broader portfolio structure—providing users with a stable and diversified automated trading environment.
🤝 Commitment to Users
• Clear and transparent explanation of all strategy logic
• Systems designed to perform reliably under diverse market conditions
• Continuous updates and trustworthy technical support
I am committed to ensuring that your automated trading experience becomes more stable, reliable, and consistent.
Thank you.
NEXA EMA Ribbon Trend User Guide Product Overview NEXA EMA Ribbon Trend is an Expert Advisor for MetaTrader 5. This product uses the alignment of EMA21, EMA34, EMA55, and EMA89 to identify the market direction. After the trend direction is confirmed, the EA evaluates whether price has returned near EMA21 or EMA34 and then reacts again in the trend direction. The purpose of this strategy is not to trade a simple moving average breakout. It is designed to evaluate pullback behavior inside an
NEXA ROC Trend Accelerator English Manual Product Introduction NEXA ROC Trend Accelerator is an Expert Advisor for MetaTrader 5 designed for H1 chart trading. The product uses the Rate of Change indicator, an Exponential Moving Average baseline, the Average Directional Index, and Average True Range based stop management. Its main purpose is to evaluate market acceleration after a possible trend transition. The Expert Advisor does not enter a trade only because price crosses a moving average. It
NEXA Momentum Squeeze NEXA Momentum Squeeze is an Expert Advisor for MetaTrader 5, designed to work mainly on the M30 timeframe. This product uses Bollinger Bands and Keltner Channel to identify volatility contraction areas. After the contraction phase, it evaluates Momentum, Volume, and Breakout conditions to detect possible entry setups. The strategy is not based on a single indicator only. It focuses on price behavior after a squeeze phase, where the market may begin to show directional
NEXA Volume Filter Pullback User Manual Product Introduction NEXA Volume Filter Pullback is an H1-based automated trading EA for MetaTrader 5. This product checks pullback areas that occur during an existing trend and evaluates entry conditions by combining volume behavior and price reaction. Instead of simply entering when price crosses a moving average, the EA focuses on situations where volume decreases during a pullback and then increases again as price attempts to continue in the trend
NEXA OBV Divergence Break Product Overview NEXA OBV Divergence Break is an Expert Advisor for MetaTrader 5. The EA uses OBV divergence, channel breakout, and MACD confirmation to evaluate trading signals. The default signal timeframe is M15. The system checks the difference between price movement and OBV flow, then confirms the signal with a channel breakout and MACD direction. After entry, the EA manages positions with ATR-based stop loss, RR-based take profit, Break Even, and Trailing Stop
NEXA Volume Break ADX NEXA Volume Break ADX is an Expert Advisor for MetaTrader 5. The EA works on the M30 timeframe and evaluates market conditions using volume expansion, rising ADX, momentum direction, trend alignment, breakout detection, and retest confirmation. The main purpose of this system is to filter technical conditions where price movement is supported by increased volume and strengthening trend conditions. This product does not use DLL files, WebRequest, external authentication
NEXA OBV Trend Rider Product Overview NEXA OBV Trend Rider is an Expert Advisor for MetaTrader 5. The EA is designed to work on the H1 timeframe. It checks the market direction using EMA34 and RSI movement, and attempts to open trades when the required conditions are met. The system combines a simple trend-based entry structure with risk management, spread filtering, stop loss and take profit placement, break-even, trailing stop, daily trade limits, and loss protection rules. The default
NEXA Volume Spike Breakout PRO Product Overview NEXA Volume Spike Breakout PRO is an Expert Advisor for MetaTrader 5. The Expert Advisor is designed for GOLD on the M15 timeframe. It identifies breakout conditions where price moves beyond a recent range and confirms the setup with increased tick volume, momentum direction, trend strength, and volatility conditions. The main entry logic is based on a Break and Retest structure. Instead of entering immediately after every breakout, the Expert
NEXA Ha Super Trend NEXA Ha Super Trend is an automated Expert Advisor for MetaTrader 5. This product uses a combination of Heiken Ashi, RVI, ADX, and ATR to identify trend direction and market conditions. The EA is designed to attempt trades only when several technical conditions are aligned. It does not rely on a single indicator signal. The system checks higher timeframe trend direction, volatility, spread, entry quality, stop loss distance, and position management conditions before opening a
Product Description NEXA Ha Pullback System is an automated trading Expert Advisor for MetaTrader 5. The EA is designed for GOLD M15 trading conditions. It uses a multi-timeframe structure based on D1 and H4 market regime filtering, H1 trend confirmation, and M15 Heiken Ashi pullback triggers. The main purpose of the system is to reduce random entries and only look for trade setups when the higher timeframe direction and the lower timeframe pullback structure are aligned. This product does not
NEXA Ha MTF Trend NEXA Ha MTF Trend is a MetaTrader 5 Expert Advisor based on higher-timeframe Heiken Ashi trend confirmation and M15 volume-based trigger logic. The EA checks the H4 Heiken Ashi direction as the main trend filter and uses M15 OBV, volume activity, candle structure, ATR, ADX, spread, and trading time filters to evaluate entry conditions. It is designed to trade only when the higher-timeframe direction and lower-timeframe trigger conditions are aligned. Strategy Overview This
NEXA Ha Smooth Trend NEXA Ha Smooth Trend is an Expert Advisor for MetaTrader 5. It is designed as a short-oriented trend-following system for the GOLD M15 chart. The EA combines Heiken Ashi, FrAMA, Momentum, ATR, and ADX/DI to evaluate market direction and entry conditions. It does not enter trades based on a single indicator signal. Instead, it checks higher timeframe direction, volatility, spread, trading time, and pullback re-entry structure before attempting a trade. By default, Buy entries
NEXA HA Trend Master PRO NEXA HA Trend Master PRO is an Expert Advisor for MetaTrader 5. The product is designed to analyze trend direction, pullback areas, and re-entry conditions on GOLD charts. The EA uses a combination of Heiken Ashi, EMA, ADX, DI, ATR, and Parabolic SAR to evaluate market conditions. It first checks the main trend direction on higher timeframes, then evaluates whether pullback and re-alignment conditions are formed on the lower timeframe. This product is a trading
NEXA Breakout Guard Pro NEXA Breakout Guard Pro is an automated trading system designed to identify trading opportunities during price breakout conditions. The system evaluates market structure, volatility, and momentum, and executes trades only when predefined conditions are met. Key Features Breakout Detection Identifies potential trading zones based on price movement beyond defined levels or channels. Trend and Momentum Filtering Uses moving averages, momentum indicators, and volatility
NEXA HA Trend Basic – Product Description (MQL5 Market) Overview NEXA HA Trend Basic is an automated trading Expert Advisor designed to reduce market noise using Heiken Ashi candles and identify trading opportunities aligned with the prevailing trend. It combines EMA and Stochastic indicators to evaluate both trend direction and overbought/oversold conditions. How It Works The system operates based on the following logic: Uses Heiken Ashi candle patterns to determine market direction Applies an
NEXA Ichimoku Pro Max 1. Product Overview NEXA Ichimoku Pro Max is an Expert Advisor for MetaTrader 5 based on Ichimoku trend alignment and ATR-based risk control. The system uses a higher timeframe for directional bias and a lower timeframe for entry timing. Its default structure is H1 for trend confirmation and M15 for execution. The trading logic combines Ichimoku alignment, ATR volatility filtering, volume strength, OBV direction, spread control, and position management. 2. Main Trading
NEXA Pivot Zone Breakout PRO (H1, GOLD) 1. Product Overview NEXA Pivot Zone Breakout PRO is an automated trading Expert Advisor designed for the H1 timeframe. The system is built around Daily Pivot (P) breakout and retest logic. The strategy is primarily designed for GOLD (XAUUSD). The Expert Advisor combines the following elements: Daily Pivot (P), R1, S1 levels Strong body breakout confirmation on H1 MACD histogram momentum filter Pivot retest confirmation ADX trend strength filter This
NEXA Ichimoku Directional System Description NEXA Ichimoku Directional System is an automated trading system designed to identify market direction using a combination of Exponential Moving Average (EMA), Ichimoku indicators, and the Relative Vigor Index (RVI). The system analyzes trend direction and market strength, and executes trades only when predefined conditions are met. It is structured to evaluate price position, cloud structure, and momentum in a consistent and rule-based manner. Key
NEXA Adaptive Gold Engine PRO 1. Overview NEXA Adaptive Gold Engine PRO is an automated trading Expert Advisor designed for the GOLD (XAUUSD) market. It analyzes market structure, trend direction, and volatility conditions to execute trades based on predefined rules. The system combines multiple condition-based logics to adapt to different market situations. 2. How It Works The EA operates using the following process: Market trend and structure analysis Volatility-based entry condition
NEXA Ichimoku Trail System PRO NEXA Ichimoku Trail System PRO is an Expert Advisor designed to perform automated trading based on Ichimoku analysis and price structure. It evaluates market direction and conditions to execute trades and manage positions automatically. Overview The system uses Ichimoku components to identify market trends and applies predefined conditions for trade entries. After entering a position, it manages risk and trade progression using structured exit and protection rules