If all I knew was 3 months of performance and nothing else, I'd say odds favor luck (but of course it could be skill). But if you have years of good performance, then odds might favor skill (but even then it still could be luck).
I never understood the fascination with winning percentage. Mathematically it is irrelevant, and psychologically it can easily do more harm than good.
I get suspicious too... whenever someone simply brags about their winning percentage rate. -- Doing so makes them appear like an amateur hungry to boast about anything they can that looks good, maybe just on the surface. Winning percentage rate is good to know, but that's rather just a somewhat meaningless piece of the greater picture puzzle to look at, or consider , This trading world game can be very shady, and easy to look good and shiny. When in fact, you're an overall failed trader still. Winning trades and initial directional convictions can quickly turn into losers, and Vice versa with losing one's. Management and psychology are vital things to consider as well. Sweet Bobby brags about being Up 7% for the year. When just a week or two before he was down 11%. ? Having a whiplash see-sawing equity/growth curve...is Not a good sign, for a trader. I make and average 11% a week -- and I'm being Very modest and conservative right now in saying that. you can easily bump that up.
....and your accountant passes this info along to you ? Why ? You implied you know the identity of the trader, from your source, the accountant. Who is breaking various ethical standards of his profession if not the legal standards. This is BS one level or the other. Oh, 13 posts.
Accountant performed an audit with trader's full agreement that results will be known to me. What is illegal here?
The book is about my process to develop a strategy for really any instrument - stocks, futures, forex, etc. Of course there are nuances for each group. BUT, that said, options are definitely the hardest, given the extra variables involved (strike prices, different expiration dates) and the difficulty of getting enough historical market data that is reliable. What I have done is create a futures strategy with the process in my book, and then applied those signals to a particular options execution technique (maybe buy ATM nearest term puts and calls for example). I would not recommend my book as a primary source if you are just focused on testing options.
Are you looking to give this person your money to manage? If so i would be asking myself why any one who can average 30% a month with low drawdowns needs outside money? They seem to have a money printing machine. They can compound quickly until they run out of liquidity, they don't need the hassle of dealing with investors.