Should We Fear Mean Reversion?

Bespoke had a short blog post about rebalancing plain vanilla 60/40 portfolios. It noted that with no rebalancing, a portfolio implemented at 60/40 right after the financial crisis would now be 92/8 which represents massive outperformance by equities. Yes, equities will outperform the vast majority of the time and probably by a lot but I think they were saying the result that took 60/40 to 92/8…