Experts: V1N1 LONNY MT5

V1N1 LONNY MT5:

Asian Range Breakout day-trading EA. Multi-symbol, M15/M30/H1. Places pending stop orders during the London session outside the pre-London Asian range, using PSAR + MACD + Stochastic signals, with automatic London/NY DST handling, structural stops, trailing and break-even.


Author: Vinicius Pereira De Oliveira

Always automated

A couple of design notes for anyone studying or adapting the code:

  • The ATR period on the trading timeframe scales with the per-symbol trading period (adrPeriod x tradingPeriod), clamped per timeframe. This is intentional and is part of how the volatility filter adapts to each symbol.
  • For 24/7 symbols (crypto, for example), the broker session check is permissive by design: intraday timing is governed by the London placement window and the New York close, which is what flattens positions at end of day.

Feel free to ask here if any part of the logic isn't clear.

I am attaching a step-by-step guide for optimizing the V1N1 LONNY Expert Advisor.
looks great at first, until you look at the code : different settings are set for each asset. this is the definition of curve fitting
Jean Francois Le Bas #: looks great at first, until you look at the code : different settings are set for each asset. this is the definition of curve fitting
Thanks for the feedback. After reading your comment, I ran a test from the publication date (June 18, 2026) to today, using the same per-symbol parameters. The out-of-sample results so far have been poor, which supports your assessment that the per-symbol settings are curve-fitted.

I intend to release a future update without asset-specific parameters—possibly covering fewer assets, but with settings that have a better chance of holding up outside the optimization period.