Performance Discipline Index
The Performance Discipline Index (PDI) is Fortitude's behavioural score measuring how consistently a trader follows their own risk rules — derived from executed trade data covering risk consistency, revenge-trade detection and overtrading analysis.
PDI deliberately measures process rather than profit. Profit over a short sample is dominated by variance and says little about whether a trader is behaving consistently; adherence to one's own rules is observable directly in executed trades and is not subject to the same noise.
What it reads
- Risk consistency — whether risk per trade stays stable, or drifts upward after losses and wins.
- Revenge-trade signatures — entries shortly after losses, at elevated size, outside documented criteria.
- Overtrading — position frequency measured against the trader's own stated approach rather than an absolute threshold.
It is computed from real executed trades synced from a connected broker account, not from self-reported entries, because self-reporting is subject to precisely the recall bias the score exists to surface.
A discipline score is not a prediction of profitability and is not presented as one. It measures whether you did what you said you would do — which is the part of trading you actually control.
Related terms
Maintained by Jared Sinclair, Founder · Syrax Global FZCO · Definitions are educational, not financial advice.
Knowing the vocabulary is the easy part.
Every term here can be learned in an afternoon. Applying them consistently under pressure is the part that decides outcomes — and the part we measure.