Earlier quoted context omitted.
>The market cannot be beat. I really would like to believe this, but please explain to me how then how firms like Renaissance can exist ... Not sure whether it's relevant but I'll add that I'm an economics PhD student.
The market cannot be beat by 100% of amateurs piddling away on their brokerage account during a few spare hours a week. The market cannot be beat by 99.9% of professional investors spending all their time day and night trying and with a team of people helping them. I'm calling your bluff on you being an econ PhD student or maybe you have been one for a month or two at most...? If you are an econ grad student you know…
There are pretty much no econ papers that would describe what happens inside the high end systematic firms. (Source: I work in the industry)
Bringing up the outliers is a perfect counterexample when wild sweeping statements are made. These are not even real outliers, they are valid samples.
>The market cannot be beat by 99.9% of professional investors spending all their time day and night trying and with a team of people helping them.
Professional investors pretty consistently beat the market. But not the ones that you see. The louder someone markets their fund, the more likely it is to be a scam. Your sample is of guys who heavily promote their fund and make money from management fees not performance.
The best managers aren't even made visible to you. Why would you attract attention to what you're doing if you have a good thing going?