Home Market Outlook Today's Market Summary The S&P 500's Shiller P/E (CAPE) ratio is near dot-com-era highs, signaling potential overvaluation. While CAPE's predictive power is debated, the current forward P/E of 21x also suggests elevated growth expectations and valuation risk. Structural improvements in S&P 500 ROIC and earnings growth partly justify higher multiples, but historic mean reversion risk remains. For long-term investors (10-20 years), staying invested in the S&P 500 is favored over market timing, despite valuation concerns. ablokhin/iStock Editorial via Getty Images The Shiller P/E ratio is hitting new multi-decade high. At ~40x, the current Shiller P/E reading is not too far from the dot-com bubble era peak of 44x. In this analysis, I want to rationally look at the Shiller Analyst’s Disclosure: I/we have no stock, option or similar derivative position in any of the companies mentioned, and no plans to initiate any such positions within the next 72 hours.…