Short answer re: investing in active managers (based on my many years listening to rationalreminder.ca) is that, if you eliminate some of the worst active managers, the average returns net of fees are the same. However, eliminating the worst managers is challenging (but not impossible) to do ex-ante. Even then, you’re only getting the same average returns as indexing, not better. Plus, you will experience a higher dispersion with active managers (greater chance of extreme negative or positive outcome), which is not desirable. Because of these two issues, It’s definitely better to pick an index fund.
Re: picking stocks yourself, the answer is also pretty cut and dry. There’s strong evidence no individual trader can expect to beat the market. Active managers can only beat the market gross of fees because they employ large teams of people to do a lot of work to gain a small edge (stuff like predicting retail sales numbers from satellite images of store parking lots).
This is my attempt at summarizing a whole field of research in a few sentences. There are many more nuisances. I highly recommend listening to the Rational Reminder podcast if you’re curious about this sort of thing. They interview a lot of academics.
Re: picking stocks yourself, the answer is also pretty cut and dry. There’s strong evidence no individual trader can expect to beat the market. Active managers can only beat the market gross of fees because they employ large teams of people to do a lot of work to gain a small edge (stuff like predicting retail sales numbers from satellite images of store parking lots).
This is my attempt at summarizing a whole field of research in a few sentences. There are many more nuisances. I highly recommend listening to the Rational Reminder podcast if you’re curious about this sort of thing. They interview a lot of academics.