Guides

Read your own trading data

How to measure what your trades actually did: expectancy, costs, win rate, prop-firm limits and the habits that repeat in a trade history. Education, not investment advice.

• How to calculate trading expectancy (in dollars and in R)

  Trading expectancy is your average result per trade. See the formula, worked examples in dollars and R, how costs change it, and when to trust it.

  Oct 28, 2026 · 4 min read

• High win rate but still losing money? Here is the math

  A 60% win rate can still lose money. Learn the break-even win rate formula, how costs move it, and a five-step check you can run on your own trade history.

  Oct 21, 2026 · 5 min read