John Hussman's Peak PE Ratio as a Long Term Market Indicator [View article]
Hussman probably got the idea from CrestmontResearch.com (Shiller may have too). My only instablog covers this topic in greater detail. Looking at my/Crestmont info. buy the heck out of it below a PE of 10x and be very, very careful above 20x... LIKE NOW.
John Hussman's Peak PE Ratio as a Long Term Market Indicator [View article]