A very interesting WSJ article by Jason Zweig, opints out that stocks UNDERperformed long term treasury bonds in last 5,10,15,20 and 25 years. Then he puts forth some powerful analysis that shows that Siegel's stock data for 1800's is completely suspect and biased and also pointed out how various editions of his nooks came up with ever increasing past return numbers.
There is just one problem with tracing stock performance all the way back to 1802: It isn't really valid.''
``There is a second problem with Prof. Siegel's data.
In an academic article published in 1992, he estimated the average annual dividend yield from 1802-1870 at 5.0%. Two years later in his book, it had grown to 6.4% -- raising the average annual return in the early years from 5.7% to 7.0% after inflation.''
To be clear, I actually think that now is a good time for investing in stocks. The past 25 years had seen a bull market in in treasuries due to dramatic decline of interest rates. That is a big part of why bonds did so well compared to stocks. I am about 80% in stocks, if I exclude the value of my house.
But the article shows that no outperformance is automatic, or guaranteed. Charlie Munger once, with his usual frankness, called Jeremy Siegel "demented". If I discover that Siegel fudged his data, I would certainly think less of him than before.
i