Day: November 17, 2007

Seven Observations From Barron’s

Seven Observations From Barron’s

  1. Kinda weird, and it makes you wonder, but on the WSJ main page, I could not find a link to Barron’s. I know I’ve seen a link to Barron’s in the past there; I have used it, which is why I noticed its absence today.
  2. I found it amusing that the mutual fund that Barron’s would mention on their Blackrock interview, underperformed the Lehman Aggregate over 1, 3 and 5 years. Don’t get me wrong, Blackrock is a great shop, and I would work there if they offered me employment that didn’t change my location. Why did Barron’s pick that fund?
  3. I’m not worried about the effect of a financial guarantor downgrade on the creditworthiness of the muni market. Munis rarely fail. Most of those that do fail lacked a real economic purpose. What would be lost in a guarantor downgrade is liquidity. Muni bond insurance is a substitute for analysis. “AAA insured, I’ll buy that.” Truth, an index fund of uninsured munis would beat an index of insured munis, because default rates are so low. But the presence of insurance makes the bonds a lot more liquid, which makes portfolio management easier.
  4. I’ve been a US dollar bear for the last five years, and most of the last fifteen years. Though we have had a little bounce recently, the dollar has of late been at record lows against currencies that trade freely against the dollar. I expect the current bounce to persist in the short term and fail in the intermediate term. The path of the dollar is lower, unless the Fed decides to not loosen more. Balance needs to be restored in the global economy, such that the rest of the world purchases more goods and services, and fewer assets from the US.
  5. I don’t talk about it often, but when it comes up, I have to mention that municipal pensions in the US are generally in horrid shape. The Barron’s article focuses on teachers, but other municipal worker groups are equally bad off. The article comments on perverse incentives in teacher retirement, which leads older teachers to retire when it is feasible to do so. For older teachers, I would not begrudge them; they weren’t paid that well at the start, and the pension is their reward. Younger teachers have been paid pretty well. I would not expect them to get the same pension promises.
  6. I like Japan. I own shares in the Japan Smaller Capitalization Fund [JOF]; it’s my second-largest position.

    Japan is cheap, and small cap Japan is even cheaper. I would expect a modest bounce on Monday.

  7. We still need a 15-20% decline in housing prices to bring the system back to normal. There might be an undershoot in price from the sales that forced sellers must do. Hopefully it doesn’t turn into a self-reinforcing decline, but who can be sure about that? At that level of housing prices, man recent conforming loans will be in trouble, much less non-conforming loans.


Full disclosure: long JOF

Book Review: What Works on Wall Street

Book Review: What Works on Wall Street

This book was really popular in 1996, when it was published. James O’Shaughnessy gained access to the S&P Compustat database, and tested a wide variety of investment strategies to see which ones worked the best over a 43-year period. Unlike most books I will review at my site, this one does not get wholehearted approval from me. My background in econometrics makes me skeptical of some of the conclusions drawn by the book. There are several valuable things to learn from the book, which I will mention later; whether they justify purchase of the book is up to the reader.

My first problem is the title of the book. It should have been titled “What Has Worked on Wall Street.” Many analyses of history suffer from the time period analyzed. The author only had access to data from a fairly bullish period. Had he been able to analyze a full cycle that included the Great Depression, he might have come to different conclusions.

My second problem is that he tests a number of strategies that should yield similar results. One of them will end up the best — the one that happened to fit the curiosities of history that are unlikely to repeat. (That’s one reason why I use a blend of value metrics when I do stock selection. I can’t tell which one will work the best.) The one that works the best just happens to be the victor of a large data-mining exercise. Also, when you test so many strategies, and possibly some that did not make it into the book, the odds that the best strategy was best due to a fluke of history rises.
Now, what I liked about the book:

  1. Combining growth and value strategies produced the best risk-adjusted returns. The growth and value strategies that did the best embedded a little value inside growth, and a little growth inside value.
  2. Avoiding risk pays off in the long run, for the most part. If nothing else, one can maintain the strategy after bad years.
  3. Value and Momentum both work as strategies. They work best together.
  4. He did try to be statistically fair, avoiding look-ahead bias, diversifiying into 50 stocks, avoiding small stocks, and rebalancing annually.

Now, two mutual funds based on his “cornerstone growth” and “cornerstone value” strategies have run since the publication of the book. The value strategy has not worked, while the growth strategy has worked. Go figure, and it may reverse over the next ten years.

Now for those that like data-mining, and don’t want to pay anything, review Tweedy, Browne’s What Has Worked in Investing. This goes through the main factors that have worked also. Theirs are:

  1. Low P/B
  2. Low P/E
  3. Net Insider Buying
  4. Significant Declines in the Stock Price (anti-momentum)
  5. Small Market Capitalization

Either way, pay attention to value factors, and if you trade often, use momentum. If you don’t trade often, avoid momentum.

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