Probability and reward-to Risk Assessment -Traders Must Read

  • Never open a position without knowing the initial risk.
  • Define your profits and losses as a multiple of your initial risk (R-multiples).
  • Limit your losses to 1R or less.
  • Make sure your profits on the average are bigger than 1R.
  • Never take a trade unless the reward-to-risk ratio of that trade is at least 2:1 and perhaps even 3:1.
  • Your trading system is a distribution of R-multiples.
  • When you understand #6, you should be able to hear/see a description of a system and know the kind of R-multiple distribution it would generate.
  • The mean of that distribution is the expectancy, and it tells you what you’ll make on the average trade. It should be a positive number.
  • The mean, standard deviation, and number of trades determine the SQN score for your system.
  • Your SQN score tells you how easy it will be to meet your objectives using position sizing strategies. Other than that, your system has nothing to do with meeting your objectives.
  • Systems are usually named after their setups, which are usually based on some attempt to predict future prices. Prediction has nothing to do with trading well.
  • System performance has to do with controlling risk and managing the position through your exits.