Strategy Risk
What makes a backtest trustworthy
A trustworthy backtest preserves the information available at each date, exposes assumptions and costs, and survives tests it was not optimized to win.
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Insights
Sourced explanations and practical research methods for individual investors and active traders.
Strategy Risk
Position sizing with ATR and defined risk
Understand what average true range measures, how it can scale a hypothetical risk unit, and why it cannot guarantee exits or define suitability.
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Portfolio concentration and scenario testing
Look through ticker counts to economic exposures, then use transparent shocks to find where correlated losses and liquidity needs may cluster.
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Building a decision-useful market watchlist
Turn a list of tickers into a dated research queue with a question, evidence, invalidation condition, next catalyst, and explicit status.
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