Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

How can I investigate historical effect of Rebalancing on Return and Standard Deviation?
Do not reinvent the wheel! Historical data about stock market returns and standard deviations suffer from number of issues such as past-filling and mostly survivorship bias -- that the current answers do not consider at all. I suggest to read the paper "A Century of Global Stock Markets" by Philippe Jorion (UC Irvine) and William Goetzmann (Yale), here. William Bernstein comments the results here, notice that rebalancing is sometimes a good option but not always, his non-obvious finding where the low SD did not favour from rebalancing:  Look at the final page of the paper,  "geometric returns -- represent returns to a buy-and-hold strategy" and the "arithmetic averages -- give equal weight to each observation interval.", where you can find your asked "historical effect of Rebalancing on Return and Standard Deviation". The paper nicely summarizes the results to this table:  The results in the table are from the interval 1921-1996, it is not that long-time but even longer term data has its own drawbacks. The starting year 1921 is interesting choice because it is around the times of social-economical changes and depressing moments, historical context can be realized from books such as Grapes Of Wrath (short summary here, although fiction to some extent, it has some resonance to the history). The authors have had to ignore some years because of different reasons such as political unrest and wars.  Instead of delving into marketed spam as suggested by one reply, I would look into this search here. Look at the number of references and the related papers to judge their value.  P.s. I encourage people to attack my open question here, hope we can solve it!