Some interesting analysis in this WSJ article (paywall) this morning based on Shiller's "gold standard" of valuation work.
https://www.wsj.com/finance/investing/this-famous-method-of-valuing-stocks-is-pointing-toward-some-rough-years-ahead-4eb6a498?st=1HpK4s&reflink=article_copyURL_shareSome excerpts:
It is sending a clear signal: Expect paltry stock returns in coming years.
The version popularized by Nobel Prize-winning economist Robert Shiller looks back at 10 years of earnings and adjusts them for inflation to cover an entire business cycle. It recently broke above 40 for the second time ever.
The first was in 1999, and it didn't stay there long. Cyclical peaks in the Shiller P/E have coincided with negative real (inflation-adjusted) returns for stocks over the ensuing 10 years, including in 1929, 1966 and 2000.
But another case for dismissing the Shiller P/Ethat companies will just keep getting more profitablemakes no sense. Corporate taxes are now low and labor's share of economic output is too. Amid massive federal government budget deficits and an aging population, those trends can't continue and might reverse.
Something's gotta give. And, with the Shiller P/E now higher than it has been 99% of the time, it will have to be the "P" more than the "E."
The Shiller P/E isn't necessarily a timing tool and can stay elevated for a long time. Zoom out, though, and it does an impressive job of steering investors away from dangerous shoals