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Model
Portfolios on ZaksInvest.com Web Site – Part II
Last
time, we described two model portfolios, presented on the Portfolios
page of our site,
www.zaksinvest.com.
One of them, which we called Moderately Aggressive, had at the end
of May produced an annual return rate of 19 percent over a three-year
period. Since then, a mini-correction hit the market, and between
Tuesday and Friday, the market fell by three percent. So if you look
at the chart now, the current results will be slightly lower.
Nevertheless, comparisons between portfolios should be made over the
same timeframe, so we will examine their returns through the end of
May. The second portfolio, which we called Basic, earned an annual
return rate of about 15 percent over the same period (i.e. three
years). We mentioned that the first portfolio was more risky than
the second, and indeed, the standard deviations of return of the
Moderately Aggressive portfolio were higher than those of the Basic.
In our last program, we also said that risk alone was not enough to
guarantee portfolio performance – that the portfolio must also
be effective.
We
will return to this problem in a minute, but first let us take a look
at the third line from the top. It is dark blue and called Market
(BL, Baseline S&P 500 Portfolio). The Market portfolio was built
realistically, on the basis of index funds that imitate the S&P
500 index. We specifically built this portfolio based on the funds
and not the index itself. This resolved two problems. First of all,
the index reflects the price of the constituent stocks, but not of
the dividends. But the fund, made up of real stocks, pays dividends
corresponding to the average for stocks in the index. Dividends on
S&P 500 stocks pay about 1.5 percent. In other words, an index
that does not take dividends into account loses about 1.5 percent of
its return compared to the actual fund. Second, all real asset
portfolios have expenses. We included these, too, by using real
funds. You may read the specifics about how we did this in the
detailed explanation. Why are we comparing the returns of our model
portfolios to the S&P 500? Out of tradition: most firms that
analyze mutual fund performance and returns compare them to the S&P
500. We decided to do the same. Through the end of May, the
Baseline fund earned an average three-year annualized return rate of
13 percent. As I said in our last program, compared to average
statistical results, this is quite a high rate of return. In other
words, on average, during the last three years the market behaved
very well. However, both of our model portfolios, the Moderately
Aggressive and the Basic, achieved better results: the Moderately
Aggressive by an average of six percent a year, and the Basic –
two percent a year. These are terrific results.
Our
Moderately Aggressive portfolio had a slightly higher standard
deviation of return than the Market portfolio, i.e. it was slightly
riskier (hence its name). But as I mentioned in our previous
program, the very fact that a certain portfolio carries more risk in
no way guarantees that it will outperform the market. As you
understand, one can build a risky portfolio with high standard
deviations whose returns still lag the market average. The fact that
our Moderately Aggressive portfolio provided such good returns (and a
19-percent annual average is an extremely good result) means that it
was constructed efficiently. A portfolio’s efficiency is
determined by what additional returns it brings with higher risk. A
portfolio’s return is compared to the performance of an
instrument that has no risk at all. We know that Treasury bills are
such instruments. The rationale behind this comparison is as
follows: if one portfolio provides one additional percentage point of
return for every unit of risk, and another returns two percent, than
the second portfolio is better – it is more efficient than the
first. This measure of efficiency is called the Sharpe Ratio, in
honor of the famous economist and Nobel Prize laureate William
Sharpe. The higher the Sharpe Ratio, the more efficient the
portfolio. In a table below the chart, we display the Sharpe Ratios
of our model portfolios. The Sharpe Ratio of the Moderately
Aggressive portfolio is higher than the Sharpe Ratio of the Market
one, which means that it is highly effective.
We
called the third model portfolio Moderately Conservative; its returns
are represented on the chart by a light-blue line. This portfolio
really is the least risky of all. One may confirm this by looking at
its standard deviation in the table below the chart. Interestingly,
this portfolio’s return was still fairly high: about 11 percent
a year, averaged over three years. Thus our Moderately Conservative
portfolio retuned about two percent less than the Market one, while
its risk – expressed by the standard deviation – was
smaller by a factor of nearly 1.5.
Whom
is our Moderately Conservative portfolio suited to? An investor who
on the one hand would like to invest money in the market, but on the
other would not want to risk too much. (Investors who do not wish to
risk at all should not, of course, be investing in stocks and bonds,
and instead should be buying CDs, Treasury bills, and similar
instruments – something called “money market
instruments.”) Whom else would such a portfolio fit? For
example, a person who would like to invest for a fairly short period
of time (we still, of course, are talking about years rather than
months).
We
discussed three model portfolios and compared them to a Market one.
And what was the return of your investments over the past three
years? If you know, you may compare it to our model portfolios. If
you do not, contact us and we can calculate the return of your
investment portfolio. This was Sergey Zaks. Thank you for your
attention and until next time.
©2007 Zaks Investment Advisory Service, LLC. All rights reserved.
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