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Updated 20 September 2026 · Versión en español

One question per page, answered in the first lines, with the numbers and the sources. These pages are about how the mechanics really work — not about what any strategy will earn, which nobody can tell you.

Costs

Is funding charged pro-rata in a backtest? — no: full at a settlement instant, or nothing. Why the difference matters most to fast strategies.

Coming next

What the probability of backtest overfitting (PBO) actually measures.
Walk-forward validation versus a single backtest, with a worked example.
Why a stop and a target inside the same candle resolve as the stop.
Why US equities have no public Level 2 — market structure, not a missing feature.

TradingZona is research and signal software: it places no orders, it is not a broker and it is not investment advice. Trading involves substantial risk of loss.