Daily Archives: February 10, 2011

THE POWER OF MEAN REVERSION

The more you look at it, the larger it looms. Yes, rebalancing is an old idea—buy low, sell high. But it’s forever new for at least two critical reasons. One is simply bound up with the recognition that rebalancing works, or at least it has a long history of working by enhancing return while keeping a lid on risk. But it’s not always clear what constitutes “optimal” rebalancing, or even if such a state of financial nirvana exists. That keeps analysts turning over rocks in search of progress.

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