For readers new to the Rule of 20 (R20), it is a traditional valuation heuristic that asserts the S&P 500 index (SP500) is fairly valued when the sum of its price-to-earnings (P/E) ratio and the ...
The recently released March inflation data reminded me about the Rule of 20 (referred to simply as the rule or R20 hereafter). In case there are investors new to either (or both) of these topics, let ...