Interesting you say that Ken. I have looked at trading this scenario as well. However I found that I was not as succesfull in my trades. I will be reading your blog to get more insite. I think it's a very interesting concept of trading.
Quote from KenL:
If you are selective in which ones to short, yes it can be a profitable system. But I would stick my neck out to say if you backtested shorting every top gainer indiscriminately, the results would be a lot less impressive than what you are achieving now. And with the common problem of not having availablity from your broker to short, you will have problems with execution of this system.
Have you considered the reverse scenario, the dead cat bounce? That is, stocks rebound after big drops.
I have backtested such a system and the results are eye poping. I have started a blog to chronicle the bounce plays at slotmarket.blogspot.com
Why don't you start a blog to track your trades? It'll be really interesting to see both of our systems in action.