MQL5 Programs Market

We introduce the permutation process for backtest validation: permute bars, rerun the complete development process, and compare the observed Sharpe to the null distribution it produces. Outputs include one-sided p-values, robust z, and quantile confidence intervals, plus a spurious performance curve that quantifies selection versus trial budget. A cache-isolation check prevents false passes. The EURUSD H1 case shows how to set a tolerance and assess whether performance is distinguishable from selection.

This article implements the Garman–Klass volatility estimator as an MQL5 indicator that uses OHLC data for higher statistical efficiency than close-to-close measures. A percentile-based squeeze/expansion detector produces breakout signals, and a companion Expert Advisor executes them via iCustom. Implementation details include series-aware indexing, recursive squeeze-state handling in indicator buffers, and a baseline-on-attach rule for the EA, giving a ready-to-use toolkit for volatility-regime trading.

The article explores the practical application of the L1 Trend Filter for noise reduction and the construction of structural features suitable for live trading. The full workflow is presented: H1 data for 29 instruments from MetaTrader 5, causal filtering, CatBoost with a horizon of three L1 bars, rigorous walk-forward testing, and VaR-based allocation of lots. The reader is provided with a reproducible code pipeline and a portfolio evaluation methodology.

We implement an adaptive trend stop indicator in MQL5 that reseeds on every flip, then accelerates toward price, with speed boosted by distance from VWAP and all distances scaled by ATR. The article covers the acceleration engine, the VWAP agreement filter that grades each flip, the anti-aliased stop line with its cloud, and persistent flip levels and arrows. The result highlights where the trend turned and whether VWAP agreed.

The article shows why a fixed posterior threshold, checked trade by trade, lacks error control and retires healthy strategies far too often on a real EURUSD case. It introduces WinRateSPRT (with Page's CUSUM for continuous use) and a permutation-tested profit factor trend to cover distinct failure modes. LiveStrategyMonitor integrates both and reports a normalized retirement-progress measure for operational decisions.

The implementation of the EV-MGRFlowNet framework demonstrates its key advantages: modularity, resilience to market fluctuations, and the ability to develop strategies independently. These features make the framework a powerful tool for analysis, forecasting, and the development of autonomous trading strategies.