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To: stockman_scott who wrote (14504)10/24/2002 1:17:20 AM
From: XBrit  Respond to of 57684
 
Yes, the Siegel-and-Shiller show. I owe Shiller big-time, because I read his book in May 2000, and it convinced me to sell all my stocks.

The core of Siegel's arguments is this:

"Furthermore, argues Siegel, stocks now deserve a price-earnings ratio in the low 20s--vs. an historical average of around 15--because inflation, taxes on capital gains, and stock trading costs are all significantly lower than they typically have been."

I have tried reasonably hard to find some place where he presents evidence for these factors he considers so important. Such as a strong correlation, over many decades and/or over many different national stock-markets, between P/E ratios and inflation, or capital gains taxes, or trading costs. So far haven't found it, maybe he's saving it for a new book?

To be honest, Siegel's inflation-rate argument sounds to me like some variant of the Fed model. Here's Hussman's chainsaw job on the Fed model:

"...most of the "fair value" calculations tossed about by Wall Street analysts are predicated on the 10-year Treasury bond yield. If the 10-year Treasury yield is low, analysts generally assume that stock yields should be similarly low (and that P/E multiples should be high). Indeed, this is the whole basis of the so-called "Fed model." I've frequently noted that despite a few good "calls" based on extreme outliers in 1982 and 1987, the historical data taken as a whole shows zero correlation between the "overvaluation" or "undervaluation" indicated by the Fed model, and the actual subsequent return for the S&P 500. That's zero to about 4 decimal places, mind you. Completely useless."

and:

"The distinction between opinion and evidence is that evidence can be observed in real-time, and has a certain amount of testable, factual weight. In this regard, the so-called "Fed model" of stock valuation (dividing the prospective earnings yield on the S&P 500 by the 10-year bond yield) is opinion, in the sense that "overvaluation" or "undervaluation" on the basis of that model has zero statistical relationship with subsequent market returns (even including a few good "calls" from extreme readings in 1974, 1982 and 1987 which were apparent even using the raw P/E). This is not to mention the fact stocks currently have a duration in excess of 40 years, which makes it a laughable notion that anybody would think of pricing them off of a 10-year Treasury with a duration of less than 8."

hussman.com

(See also Smithers and Wright, "Valuing Wall Street", p. 246 for a great chart showing the total failure of the Fed model during the 1950-1968 period).