Trading Systems Lab

Practical notes on EA building, MT5 testing, risk control, and market timing. Less hype, more systems.

Tip: Use short keywords like “London”, “ATR”, “spread”, “JPY”.

One File Decides, Another File Acts

Where you draw the line between deciding and trading is the most consequential decision in an EA. A strategy module you can call with plain numbers, a verdict that explains itself — and the failed strategy that proved it was worth it.

MQL5 MT5 Expert Advisor EA development architecture testing tutorial course

2026/09/16

Your First EA Places No Trades

Your first Expert Advisor should read the market and publish what it thinks — nothing more. Build the signal-only EA that fills our signals page, from its real source, and learn why every read uses the last closed bar.

MQL5 MT5 Expert Advisor EA development closed bars tutorial course

2026/09/16

Four Techniques Tested, One Survived: the Tokyo Fix

We promised to test four techniques from our map and file the results, pass or fail. Three failed. One, the flow after the 09:55 Tokyo fix, held in every year since 2019, became an engine, and is now running live.

tokyo fix gotobi USDJPY EURJPY backtesting calendar effects momentum liquidity sweeps MT5 EA development

2026/09/11

A Map of FX Techniques, and Where Ours Have Been Tested

Every family of FX technique we know of, in one table, with what our own backtests say about each: proven, rejected, or not yet tested. Two patterns stand out, and they decide what we test next.

strategy backtesting mean reversion trend following breakout sessions MT5 EA development

2026/09/10

Our Daily Signals Are Contrarian. Here Is the Study.

We rebuilt our three D1 signal analyzers over ten years and ten pairs and measured what happened next. The readings are anti-predictive: the stronger the signal, the worse the forward return. What that means for how to read the Signals page.

signals backtesting mean reversion D1 forward returns MT5

2026/09/09