Trader OS

Trading journal and review

Score decision quality separately from outcomes. Daily, weekly, monthly, and quarterly reviews.

Why score them separately

Making money does not mean a decision was right; losing money does not mean it was wrong. Reviewing outcomes alone mistakes luck for skill and sound decisions for mistakes, directing improvements the wrong way.

Score every trade twice: Decision Quality and Outcome.

Good outcomePoor outcome
Good decisionEarned returnBad luck; do not change the rule
Poor decisionGood luck—the most dangerous caseA deserved lesson

Three stages of a trade record

Before Trade

Thesis, invalidation, size, expected holding horizon

During Trade

Execution, deviations from plan, thoughts at the time

After Trade

Outcome, decision-quality score, outcome score, next changes

Before Trade is the crucial part: write it before you know the result. Writing afterwards lets memory reshape your original thinking to match the outcome.

Four review cadences

Daily ReviewPnLRiskPositionExecutionMistake
Weekly ReviewExpectancyWin RatePayoffRegimeStrategy Drift
Monthly ReviewAlphaBetaDrawdownCorrelationRisk-adjusted Return
Quarterly ReviewStrategy PortfolioCapital AllocationResearch DirectionMarket Structure Change
  • Daily: did you break a rule today? What mistakes occurred?
  • Weekly: have expectancy, win rate, or payoff ratio changed? Has the market regime changed? Has the strategy drifted?
  • Monthly: how much return is Alpha and how much Beta? What happened to drawdown and correlation?
  • Quarterly: should you adjust the strategy portfolio, capital allocation, or research direction? Has market structure changed?

Connections to the course

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