Quote from DT-waw:
My Excel spreadsheet tells something completly different...
Risking 2% of capital per trade is not dangerous, if you have a positive expectancy. Of course, if edge is close to neutral, 2% risk per trade will result in blowing out. The risk of high % drawdown depends on several factors:
1) % loss for losing trades,
2) system's edge,
3) position size mgmt strategy.
Assuming that all losing trades lose equal %.
For example:
- Margin is 5k
- Starting capital 50k
- Your position size is always max. what your current capital and margin allows
- You can lose 100/contr. or win 200/contr. with 40% hit rate. ($100 x 10 contracts)/50k capital = 2% risk
- Profit factor is 1.33
Now, if you'll run Monte Carlo simulation, you'll see that risk of losing money after 500 trades is almost zero. However, you can experience up to 60% drawdowns. Play with the numbers for yourself, I attach Excel spreadsheet with default settings like in the above example. I'm not sure whether it will work properly on your PCs, because I use polish version. If you'll have problems, change names of following functions:
1. Column E: ZAOKR.W.DOL -> ROUND DOWN the number
2. Column K: function that returns random numbers between 0 and 1.
3. Column L: JEZELI -> IF
Spreadsheet has only 50 rows b/c max attach. file size limit. But you can extend # of rows.