Terence Dumartin | Project - Algotrading

Algotrading
// Algorithmic Market Analysis System


Decoding Gold: Designing a Quantitative Analysis and Algorithmic Trading System

The gold market (XAUUSD) is one of the most liquid yet also one of the most volatile markets in the world. Between June 2021 and March 2022, we undertook a quantitative research challenge: to develop an algorithmic system capable of modeling price behavior and identifying probabilistic market scenarios.

Far from promises of quick profits, this project was designed as a rigorous study of system robustness in the face of financial market uncertainty.

Philosophy: Hybridizing Rules and AI

The system is built on a unique hybrid approach:
Rule-Based Approach (Domain Rules):
We rely on structural market analysis (Price Action) to define context (trends, liquidity zones, and volatility regimes).
Machine Learning (Probabilistic Modeling):
Rather than predicting future prices, AI is used to detect complex patterns and to evaluate the probability of success of specific market scenarios based on large-scale historical data.

System Engineering: 2.5 Million Simulations

The strength of an algorithm does not lie in its past performance (simple backtesting), but in its ability to survive the future.
To validate our strategy, we implemented an intensive testing protocol:

  • Massive Fine-Tuning:
  • The model was refined through more than 2.5 million cloud-based simulations, exploring thousands of parameter combinations to identify the most stable configurations.
  • Stress Testing:
  • We exposed the algorithm to degraded market conditions—high volatility, flash crashes, and low-liquidity periods—to observe its behavior under crisis scenarios.
  • Objective:
  • Favor consistency over maximum theoretical profit.

Under the Hood: How Does AI “Read” the Market?

This is where the technical dimension meets the visual one. For the algorithm, a price chart is not a sequence of candles but a multidimensional data stream.

Pattern Detection and Market Regimes
To understand how the system identifies opportunities in the gold market, we rely on two key concepts:

  • Feature Engineering:
  • Instead of focusing solely on price, the system computes complex variables: price velocity ratios, volatility standard deviation across multiple timeframes, and correlations with volume.
  • Probabilistic Analysis:
  • When a configuration appears, the system does not decide “Buy” or “Sell.” Instead, it compares the current situation to thousands of similar historical scenarios.
  • Technical Visualization:
  • Imagine a 3D space where each point represents a moment in market history. The system projects the current market state into this space and checks whether it falls into a cluster of historical successes. If the density of successful outcomes within that cluster exceeds a predefined confidence threshold, the scenario is validated.
This approach filters out market noise and retains only signals where a genuine statistical edge exists.

Results and Performance Analysis

After 15 months of data and 748 executed trades, the performance metrics demonstrate the viability of the approach:

Metric Result
ROI (Return on Investment) +324.42%
Win Rate 57.35%
Maximum Monthly Drawdown 8.79%
Maximum Daily Drawdown 4.1%
Technical Interpretation:
A 57% win rate may appear modest to beginners, but in quantitative trading, when combined with rigorous risk management, it is an exceptional result.
The most critical metric here is the maximum daily drawdown (4.1%): it proves that even during adverse periods, the system preserved capital. This is the true hallmark of a robust algorithm.

The Robustness Challenge: Surviving Overfitting

The greatest trap in algorithmic trading is building a model that appears “perfect” on historical data, yet is completely unable to adapt to the future. If you torture the data long enough, it will eventually tell you what you want to hear. This phenomenon is known as overfitting: the model learns the noise (random fluctuations) instead of the signal (the underlying market logic).

To ensure that the 324% return was not the result of chance or forced curve-fitting, we implemented three mathematical safety barriers:

  • 1. Out-of-Sample Validation
  • We split the historical data into two distinct segments. The model was optimized on the first segment (in-sample), then tested on the second (out-of-sample), which the algorithm had never “seen” before. A system survives only if its performance remains consistent on unseen data.
  • 2. Walk-Forward Analysis
  • Rather than relying on a static test, we applied a walk-forward methodology, designed to simulate real-world usage. The model is trained on one year of data, tested on the following three months, then the window is shifted forward and the process repeated.
    This approach verifies whether the algorithm’s parameters can adapt to changing market regimes (e.g., transitions from trending markets to consolidation phases).
  • 3. Monte Carlo Simulations
  • After generating 748 trades, we applied Monte Carlo simulations. The principle is simple: we reshuffle the order of trades or randomly remove some of them to observe how the equity curve reacts.
    Objective: To ensure that profitability does not depend on a sequence of consecutive “lucky” trades, but on a stable and positive mathematical expectancy.
The Telltale Sign
A 57% win rate is paradoxically reassuring. Models that report 90% win rates are often overfitted or conceal extreme tail risk (e.g., martingale-based strategies). Here, performance emerges from the repeated exploitation of a small but genuine statistical edge, combined with strict risk management.

Technical Stack: The Power of Cloud and Hybridization

Python: Used for all Research & Development (R&D), processing the 2.5 million simulations, and training machine learning models (Scikit-learn, Pandas).
C#: Used to develop the final execution expert on MetaTrader 5, chosen for its execution speed and efficient multithreading management.
Cloud Computing: Cloud environments were leveraged to parallelize robustness testing and genetic parameter optimization.

Conclusion

This project highlights the importance of a data-driven approach in a domain often dominated by emotion.
The Algorithmic Market Analysis System demonstrates that combining strict domain rules with the power of machine learning enables disciplined navigation through even the most complex financial markets.

Duration

2021 - 2022

Tech Stacks
  • Python
  • C#
  • Google Cloud Platform
  • Azure
Team
  • Carl Duffaut
  • Terence Dumartin