ben ski;315595 wrote:I recall on Bogleheads, it was either the Hale or Merriman Ultimate Buy-and-Hold Portfolio, the author had revised his opinion and admitted it hadn't worked. I've never liked these kind of portfolios – there's no logic behind them; no understanding of how to build a portfolio. They're just like naive active fund portfolios – betting on a couple of different horses to keep things interesting.
The whole theory around risk factors is questionable and inconsistent. Cliff Asness debunked the Size effect 10 years ago, when improved data on old stocks showed there was no long-term premium after all. It shows the very weak academic standards behind this stuff. We've got 3,000+ factors now because Fama & French set such a low bar. (6x more 'risk factors' than there are stocks in the S&P)
There are ways to use tilts strategically. I don't like using bonds in my own portfolios. So I might use a Quality tilt, or overweight Consumer Staples and Healthcare. Quality Dividend Growth is a good tilt away from more speculative parts of the market, without betting against large companies like Apple and Microsoft. But you still need to be building from a realistic framework. You need to know what the drag will likely be, if the correlations are useful .. People who've just swallowed FF Factor Theory, and want to add a few more betting slips ("You never know! You might get lucky! Have a nibble!") – these are not serious people. The best way to tilt away from market concentration is just to add an equal-weight index – it's effectively every factor (known and unknown). Whether that's a good idea or not is another matter.
Thanks Ben ski.
I think there is quite a bit of logic covering the asset allocation and then the actual portfolio construction, in the book.
It's Merriman who devised the Ultimate Buy and Hold Portfolio (detailed below). I believe Hales Global Tilt Portfolio has changed slightly since 2006, for example ditching commodities, but the value and size risk factors have remained.
What's the difference between a value tilt, and say tilting towards quality/quality dividend growth/equal weight?
Merriman Buy and Hold Portfolio
6% U.S. Total Stock Market
6% U.S. Large Cap Value
6% U.S. Small Cap Stocks
6% U.S. Small Cap Value
6% U.S. REITs
6% International Developed Markets Stocks
6% International Value
6% International Small Cap Stocks
6% International Small Cap Value
6% Emerging Markets Stocks
12% Short-Term Treasury Bonds
20% Intermediate-Term Treasury Bonds
8% TIPS