What information belongs in a point-in-time investment replay?
How to distinguish a reporting period, publication time, retrieval time, and simulation time before reading a historical decision.
Updated
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Simulation & testing
Read historical simulations with clear cutoffs, execution assumptions, and limits on inference.
What should you check before trusting a backtest chart?
A practical audit of assumptions, friction, path risk, and sensitivity that keeps simulated results separate from an investment record.
Updated
Why can a price-return chart disagree with a total-return chart?
Reconcile two return numbers with an original dividend worksheet before comparing a strategy with a benchmark.
Updated
When may a simulated trade use the price that generated its signal?
Audit a historical simulation with a timestamped information-to-fill timeline, rather than assuming a closing-price signal was executable at that close.
Updated
When does a holdout period stop being an independent check?
Use a small fictional trial log to distinguish development, evaluation and repeated tuning before treating a backtest as new evidence.
Updated