I would look forward to showing me their IB account performance over 10 years it does not exist. Even I blind squirrel finds a nut once in a while. That would hold true for designer models also. How many models OS beat QQQ over the last 10 Years? How many will going forward? I’m going to say less than 80% and the stats show 90% so far. But you might have a better sharpe ratio over the last 10 years and that is a personal trading preference. Don’t be fooled by crazy returns until you trade small amounts OS for at least 2 years.
Bottom line it’s a hard game slow and easy wins it.
Cheers,
MV