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FILTRIX / Learn by doing

From your first filter
to a test you can explain.

Four practical lessons to build a historical sample, understand its results, and test execution rules. Watch, follow the steps, then try it yourself.

Start lesson 01 → Explore the lessons

4 lessons · 4 videos · English captions · Hands-on exercises

The core workflow

Start Here

One clear outcome per lesson.
Keep FILTRIX open alongside the guide.

Two different questions

Sample first.
Execution second.

Context Analysis

Where did matching days close?

Define the filters, inspect the usable sample, and read the daily close-position distribution.

Learn Context →
Execution Analysis

What happened under these rules?

Simulate an entry and exit on saved symbol-days. Review per-share PnL and individual trade charts.

Learn Execution →

Keep this nearby

Six terms you'll use

The essentials for reading your first result. Each lesson explains them in context.

Context
A filter definition and the matching historical sample used to study daily outcomes.
n
Usable, distinct symbol-days included in the Context calculation; not the raw alert count.
Close position
(Close − Low) / (High − Low). Zero is the daily low; one is the high. This is not a return.
In-range Band
The close-position interval you choose. Both boundaries count as in range.
Pair
One symbol and trading date passed to Execution. A pair does not guarantee a completed trade.
Total PnL
The sum of signed per-share price changes in simulated trades, before costs and position sizing.

Find the right step

Already working on a setup?

I want to paste filters or a Trade-Ideas linkBuild or import the definition → My sample is empty or the counts differCheck the Context result → Execution is preparing data or returns no tradesCheck the simulation →

Turn the lesson into a saved example.

Start with the AAPL 2025 interface exercise, then use the same process for your own research question.

Try the first exercise →