Thursday, February 02, 2006
Let It Ride
This comment from a reader.
My reading of Considine's papers suggests his focus is on choosing low Beta for lowering the risk in portolios. On one low risk portfolio he has 45% in natural resoruces ETF's ,because natural resoruces have low beta in the previous years! Anyone who has any trading experiences recently knows the risk(or beta) for natural resources has jumped up significantly. I personally would not consider putting 45% in natural resources being a low risk approach, 10-15% will be my upper limits.
I did not realize the resource weighting was as much as 45%, I thought it was closer to 27% (for energy anyway) but I could be wrong.
Either number, along with any number in between, is a big percentage. The weight for energy these days in the S+P 500, as measured by the IVV ETF, is 10.34%. The materials sector, where most other natural resource companies come from, comprises 3.03% of the index.
The 27% that I recall is a doubling up versus the market. The 45% the reader cites is more than a tripling of the benchmark weight. Personally I don't care what any statistic says about this, whether that stat is forward looking or backward looking, there is no way I would put that much client money, or mine for that matter, into one area of the market.
Applying a kick the tires analysis tells me this is fraught with risk. The reader's point about beta having gone up is a good one and if you are inclined to put that kind of thought into it, great. I think an easier way to think about this though is that there are ten sectors in the S+P 500. Putting 30%, let alone 45%, into any one theme is just too much.
I will repeat what I said before about the author, I don't doubt he is smarter than me and gets better results than me but I do not want to have so much of my portfolio riding on one outcome. That the data really could be backward looking makes the strategy even riskier.
My reading of Considine's papers suggests his focus is on choosing low Beta for lowering the risk in portolios. On one low risk portfolio he has 45% in natural resoruces ETF's ,because natural resoruces have low beta in the previous years! Anyone who has any trading experiences recently knows the risk(or beta) for natural resources has jumped up significantly. I personally would not consider putting 45% in natural resources being a low risk approach, 10-15% will be my upper limits.
I did not realize the resource weighting was as much as 45%, I thought it was closer to 27% (for energy anyway) but I could be wrong.
Either number, along with any number in between, is a big percentage. The weight for energy these days in the S+P 500, as measured by the IVV ETF, is 10.34%. The materials sector, where most other natural resource companies come from, comprises 3.03% of the index.
The 27% that I recall is a doubling up versus the market. The 45% the reader cites is more than a tripling of the benchmark weight. Personally I don't care what any statistic says about this, whether that stat is forward looking or backward looking, there is no way I would put that much client money, or mine for that matter, into one area of the market.
Applying a kick the tires analysis tells me this is fraught with risk. The reader's point about beta having gone up is a good one and if you are inclined to put that kind of thought into it, great. I think an easier way to think about this though is that there are ten sectors in the S+P 500. Putting 30%, let alone 45%, into any one theme is just too much.
I will repeat what I said before about the author, I don't doubt he is smarter than me and gets better results than me but I do not want to have so much of my portfolio riding on one outcome. That the data really could be backward looking makes the strategy even riskier.
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2 comments:
Roger,
There are a number of portfolios in Dr. Considine's papers. The one caught my eye was the "Beta Managed Porfolio" since it has the lowest beta(55.9%) and Standard deviation(7.83%) for an estimated Average Annual Return of 10.22%. In comparison, S&P 500 has Beta of 100% Standard Deviation of 15.07%, Average Annual Return of 8.3%.
It consists of 15% each of IGE,IXC and IYE, all suppose to be natural resources funds.
Actually, Dr. Considine's papers are fairly easy to read if you believe the math behind it. However, he did raise a couple of contrarian notions: 1. International funds do not offer diversification for domestic funds, due to relatively high Betas. 2. The use of Long Goverment Bond over short one in portfolios.
Personally I have some ideas about risk control of portfolios. Beta is part but not the entire matter.
Roger,
Thanks for your post. I have been overweight oil and precious metals for the past 1 to 2 years and took the opportunity to lighten-up on Friday. I'm still overweight these sectors and may sell some more. I have trailing stops, so I won't be riding it back down.
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