Not really. I think it makes investing feel more interesting . But the results of mild value, small-cap, international, etc. tilts tend to be so negligible, and improved risk/return characteristics so unreliable. aka more interesting.. What I would do, personally, after years of backtesting every idea I've had, is use sector overweights to manage risk, more so than bonds (which, with the exception of TIPS, I don't think are generally worth holding). I think there are more efficient and reliable ways to manage risk. So the sectors I'd overweight are Consumer Staples, Healthcare and Energy. I think the amount of protection businesses in those sectors provide (against recession, the first two, and inflation, the third), because of the nature ...