Size a position and survive it

The part of trading that is arithmetic rather than opinion. No entries, no exits, no picks — just how much, how bad it can get, and how to tell afterwards whether you followed your own plan.

For you if: You already have ideas. What you do not have is a rule for how much to risk on one.

1. 1what is position sizingGuide · 7 minTurning a risk limit into a share count
2. 2understanding drawdownsGuide · 6 minWhy a 50% loss needs a 100% gain to undo
3. 3r multiple and expectancyGuide · 8 minMeasuring a strategy in units of your own risk
4. 4trading journal guideGuide · 9 minThe record that makes the previous step computable
5. 5risk psychologyFlashcards · 10 minThe failure modes that are yours rather than the market’s
6. 6position size calculatorTool · 4 minYour risk limit, in shares, for a real entry and stop
7. 7risk of ruin calculatorTool · 5 minThe probability your edge never gets to play out

Every step is a page that already existed before this path did — nothing here is a teaser for something paid, and there is no next step that asks for money. The times are rounded up on purpose: a promise about effort that flatters us would be worth less than no promise.