It's universally accepted that you can't beat the market in terms of risk-adjusted returns. But theoretically you can achieve higher absolute returns if you take more (compensated) risk. In your opinion, what are the best ways to do that?
I'm not talking about doubling your returns, I'm talking about increasing your average return over 10-20 years by 1 to 3 percentage points compared to a simple buy-and-hold ETF portfolio.