If you can beat the market over a 10-15 year period, you are in a very small group of extremely fortunate individuals (some of which are simply lucky). If you

If you can beat the market over a 10-15 year period, you are in a very small group of extremely fortunate individuals (some of which are simply lucky). If you have beaten the market over the last 1-5 years, you likely invested in particular factors without really knowing it. Once those factors lose favor, you will significantly under perform the market. I personally invest primarily in well diversified, extremely low cost ETFs and I buy 1 - 2 positions a year outside of that portfolio (right now the main one is bitcoin for me). But, I'm always looking around for something that I think can be a 10X return. But... I rely on my primary diversified portfolio for my retirement and the single 1 or 2 investments I make outside of that are for fun, knowledge and I fully acknowledge gambling.