Quote from drsteph:
Don't be so quick to knock portfolio rebalancing. While I am leery of its long term implications in an uncertain world (i.e. what has worked for the last 70 years post depression may not work in the future), you must admit that winning a nobel prize for something (MPT) does at least suggest that, at the time, it was a good idea.
The main tenet of MPT & rebalancing is that it minimizes overall risk while coming close to maximizing overall return. While I cannot find the specific numbers from a study I recall reading, comparing a rebalanced to an unbalanced portfolio gave you a 10% avg return with a -4% max annual Drawdown for the rebalanced portfolio vs. 11.2% annual return and a -10% max annual drawdown on the non-rebalanced portfolio.
For my "I need this money not to go away " portfolio, I'll choose the rebalancing. I'm not looking to make a killing there, just have a reasonable chance of preserving capital and outpacing inflation.
For my "aggressive investment" portfolio, I'll probably not rebalance - rather just trade in and out of funds, ETF's or individual larger caps. 20% maxDD there for a 20% or larger ann yield.
For my "risk capital" portfolio, I'll never rebalance. But I'm willing to risk 50-100% of that portfolio for a 100-300% return. Those are purely spec plays, options, growth small caps, futures, whatever.
And for the record, since a lot of these funds are really similar to trading an index, why can't you 'trade' them? One of the most important decisions you will make is WHEN you buy into the fund, so if you know that the market is going to crap out in october, why would you purchase your S&P index fund in september? Buying yesterday vs at the top in september saves you 4%, which is about half your annualized expected gain after expenses. Now, it is much easier to have an 'up' year. Ditto for the rebalancing - choose your view and go with it. If you are wrong, well then you're wrong.
I'll make $$ any way I can. I'm not too proud to use 'funds' when appropriate.
But I'll choose my entry/exit points, thanks.
Thanks for your comprehensive reply and the specific related data.
You make a strong connection between between risk of a given protfolio and its ROI. Your division of total capital into the three venues probably satisfies a lot of wealth building goals for you.
It is very possible to consider wealth building from alternative viewpoints than the traditional one you have articulated and follow. To say that these traditions are entrenched is an understatement.
You can easily imagine how any person who does not share those views feels while circulating in the domain of these practitioners.
As an entrenched sailor who never misses a Block Island or Edlu (sp?) it was always fun to pass the time as an invited strategist to debate the traditions.
I still revere having experienced the financial transitions from pre computer to computer mainfraimes to PC dominated global orientaions. The pre quant world was something to behold where the traitions you speak of came into prominence.
It definitely was a C+ history Ivy league world for striving for striving for the ultimate balance in everything. My daughter swiped my wooden shaft putter and would never concede it back to me. It was the "right' putter for her.
My view is this. A person can go through a congent reasoning process to escape these traditions. The fact that university X's tenured Professor comes to a conclusion using a comparitive analysis of two wrong minded subjects does not prevent one of his protogeges from escaping his confines. todays or tomorrow's Nobel prizes will go to these escapees, I believe.
Being told that I am going to learn my lesson by stars of the industry, was and is conventional I guess.
For me, I could just never refrain from the logic that I perceived. It is my perception that the best investments are attained from the best opportunities. Best opportunities are defined by quality assessment.
The PC has lead to the entry of the public into investing, where heretofore it was the domain of the few. Letting the heritage issues fall away and not be a foundation of investing based upon tradition, led to two paths. Quants and the man in the street are moving to the STREET and beginning to occupy niches. I left the scene of tradition and saw that mainframes could handle data and simply tried to use an 024 to punch out daily decks to deal with daily price movement in the markets. Punching was an exercise in futility compared to using brownlines and a pencil.
It is something like being an engineer just out of school and having been told how to read the WSJ (by a prof at that engineering school) and seeing a light bulb go on for "making money" all in the context of the NY Social Register and its traditions for wealth.
I recommend to anyone to simply use their talents to discover and learn about making money considering the potential of the markets to give it to you (or allow you to take out the potential the market offers).
The money is there continually and irrefutably by any quality statistical or finacially measured manner. Poor analysis and measurement yields accordingly.
Once the traditional approaches are mapped onto the market universe, you can see that the alternative spaces for high money velocity wealth building may or may not overlap. Considering market shares vis a vis trades completed by a particular venue, it turns out that various approaches do not compete for wealth protions and upper trade limits quantification has only to do with the approaches strategies.
So all of this shows that market risk is not a function of the market's operation but merely a function of the trader's approach. Specifically in an approach the risk comes down to the rules for remaining in the market as the market behaves.
Any approach that is designed to meet a goal of high money velocity for wealth build automatically goes to areas on the universe that eliminate all risks while being in the market.
Once you invent five or so tools for handling this in the application of a given approach, they handle most of the use of capital over time in the markets.
Make a list of a 100 inventions and see how they are distributed by use over the universe of the markets and the approaches for those parts of the markets universe.
As an example, take DELL. I advocate that it is good for about 60 to 70% a year for capital appreciation. Therefore, I cannot make it part of my list for investing since it does not perform adequately. Other do use it to make profits, however.
It could be used in all three of the partitions mentioned by drS that I am responding to. Each would make differing levels of ROI/per year. Personally, I cannot stand the risk of any of those three situations; nor could I settle for only 70% a year from DELL.
I am attaching, once more a possible way to approach this. No one can easily reason a pathway to the traditional approaches of the industry.