As I write this article, the Shiller PE has crossed the 40 mark. This ratio, also known as the CAPE ratio (Cyclically Adjusted Price-to-Earnings), is a valuation measure developed by economist Robert Shiller to assess how expensiveThe author is a mechanical engineer. He holds a B.S. in Mechanical Engineering and an M.B.A in Finance. He employs evidence and factor-based investing in his personal portfolio.He will sometimes seculate for fun and take small positions in individual stocks he believes are trading ...