Re: Discussion on a compounding trade idea
Definitely worth testing out np88.
For systems where you are adding either to losers or winners, for me you have to consider whether this is better than going all in at one point.
Some food for thought. Lets say you have an edge on the order at 100. You haven't mentioned stops, but lets keep it simple and say your target is 95, and your stop is 105, but that it will hit 95 with >50% probability. Then you add in some more to your short at 99. Does this increase or decrease the edge? Does this trade from 99, with target of 95, and stop (still at 105 or wherever you now have it) have an edge on its own? If it doesn't, why trade there? After all, you can view this second trade at 99 as a separate trade. If it has no edge, you shouldn't be adding to your position there should you?
Alternatively if the trade from 99 has a greater edge than the one from 100, then why not go in both positions at 99? This applies all the way down to the position at 96. Even if you are happy to enter with a smaller edge each time, this seems to make a hard task (that of finding a good edge), even harder, because you now have to find an edge where you can continually add with each new addition having a positive edge too.
Adding in as you go, or even scaling out, seems to be more about the psychological advantages. |