Backtesting results of the new version, available at halcyonfx.com (which is the developer's website), show the expert advisor being tested on the GBP/JPY pair for a period of 2 years. This backtests somehow increased my concerns. Even though the equity curve does seem much cleaner than before, with I have to say, increased profitability, there is an obscure risk factor surrounding this new money management system.
The system basically builds up position size as losses are incremented, which clearly makes recovery from losses much faster. But I cannot help to ask myself, what if the expert suffers too many continuous losses ? Will the expert drive the account to a margin call ?
The tests did show this troublesome issue to some extent, on all of the test, Doubleplay did experience periods of sharp draw down, that, although not available in the presented data, amount to almost 50% of the account by visual inspection. The ea did recover all losses and drew a nice equity curve on all of the graphs but... What if the market conditions had been worse ? Is the expert going to cause a margin call ?
I have never considered an expert with such a high level of draw down acceptable, so I should not consider Doubleplay v 4.5 as one merely because of this fact. I must say, I have run Doubleplay v4.5 on a live account since March the 17th and it does show me a clean advance with a gain of almost 5% on my account until now.
But what about those dark market times ? The ea seems to kind of protect itself by limiting the scaling of positions sizes with a top, but this does not keep me from worrying about such a high draw down in bad market conditions. I would have to say, there are other options, better options, out there right now. As always, time will tell if the expert has a high enough win:loss ratio as to keep our accounts safe from a kill. Don't forget to check out my ebook that explains expert advisors and reviews several commercial experts !