I recently posted a Letter to the Editor at the Early Retirement Planning Insights site. It’s entitled Two-Level Switching in a P/E10 = 14 Market.
Juicy Excerpt: It’s easy to understand why 100 percent stocks would work best when the P/E10 level is below 9. And it’s easy to understand why 20 percent stocks would work best when the P/E10 level is above 21. However, it’s hard (at least for me) to understand why 40 percent stocks works best when the P/E10 level is between 9 and 21.


Larry Weber posted a follow-up to his comment from yesterday, pointing me to research that appears at IFA.com.
http://arichlife.passionsaving.com/2009/07/28/bogle-says-valuation-informed-indexing-can-work/
Rob