This pattern of 15 good(ish) years (white portion of the box) followed by 15 years when you had better be a market timer (yellow portion) has worked all the way back to the 1830s.
The next yellow box starts about now.
See chart below!
Stocks
Next 10
to 15 Years
Sub Par
Returns or Losses?
DYI’s
Opinion?
YES!
Stocks & Bonds
Updated Monthly
% Bond Allocation 100% (rounded)
--As the stock market becomes more expensive, a conservative investor's stock allocation should go down. The rationale recognizes the reduced expected future returns for stocks, and the increasing risk.
--The formula acknowledges the increased likelihood of the market falling from current levels based on historical valuation levels and regression to the mean, rather than from volatility. Many agree this is the key to value investing.
The Formula.