Grisha
Lil-Rokslider
you really don't want to look only at the return on a portfolio - especially for a short duration. You want to at minimum understand risk-adjusted returns specifically as well as market correlation. The only "free lunch" in finance is risk reduction through diversification (technically through holding non correlated assets). The reason a good financial advisor is worth money is they will be factoring in dimensions that most people don't understand to consider, they will plan for the long run and in general will not panic in a downturn. The trouble is finding a good one.