DIVERSIFICATION AND PROBABILITY OF RETURN
To be considered a credible wrap account, the program has to offer asset
allocation. This in itself requires definition. A singular purchase of stock
does, quite obviously, not represent a diversified portfolio. To have proper
diversification, a portfolio should have between 10 to 15 stocks to insulate
itself from unsystematic risk- that is the risk of one company having a problem
irrespective of the overall market (Digital or IBM for example). For such
purposes, an adviser should recommend 13 stocks to diversify a pure stock
portfolio. But stocks, by themselves, do not represent the entire spectrum
of investment considerations. Corporate bonds, treasury instruments, municipals
bonds and money market funds comprise a selection of investments in a "truly"
diversified portfolio representing all types of investments (remember that
the purchase of bonds also must be diversified- though municipal bonds are
not generally used in wrap accounts). The use of the various investments
within one account is called asset diversification. In such a portfolio,
the addition of bonds and money instruments insulates the pure stock account
from uneven economic (called market or systematic risk) events that would
cause that section of the fund to go down. This results from the general
historic fact that if stocks are doing poorly, some other section of investments
is doing well. Proper allocation of the investments, in accordance with a
clients acceptance of risk, should allow the investor an acceptable return
considering these conditions. Of course, the investor is seldom, if ever,
able to hit a home run in overall return, since of the categories mentioned
so far- stocks, bonds and money market funds- only stocks would normally
provide substantial gains in value. Bonds and money instruments are less
volatile and, by nature, unable to gain in value to the same degree of stocks
and hence would insulate the account from the potential substantial gains
as well. The difference in returns is shown on an historical level in the
following chart.
RETURNS OF STOCK, BOND, AND T-BILLS
| Compounded Annual Return
1926- 1988 |
Standard Deviation
1926-1988 |
| Socks (S&P) | 10.0% | 21% |
| Long Term US Bonds | 4.4% | 13.0% |
| T- bills | 3.5% | 0 |
| Equal Mix Stocks/Bonds/Bills | 6.5% | 12.0 |
The first column addresses the type of returns an investment would present
to a client as the major reason stocks must be an active part of a portfolio.
Over the 60 year period, stocks unquestionably earned the highest return.
The second column reflects the increased returns that became available through
the use of bonds. However, to be clear in its understanding, the reader must
realize that a substantial portion of the gain was due to the reduction of
interest rates in the mid/late 80's from the exceedingly high rates of the
early 1980's. The third column, for ease of definition of understanding and
use, reflects the volatility and short term risk of the various investments.
Stocks are known to have periods of significant decline- probably best noted
by the October 1987's Black Monday. Bonds have also shown a considerable
volatility as of late and may also pose a risk hazard. When viewed in the
short time frame, the odds of losing or making money may be more than the
investor is willing to accept or should accept. However, a properly managed
combination of all three investments (usually all three are used, but is
not a requirement. Less money market funds, if any, are used in periods of
strong growth ) can reduce the overall risk of a singular purchase of only
one investment and still provide the investor with acceptable returns. Obviously,
the less risk or the more conservative portfolio, the less the return-
considering a normal market and expertise of the manager.
If a client wanted a very conservative portfolio (still with the realization
that stocks are necessary for the major growth to the portfolio), then the
following percentages might be utilized:
Short term debt (T-bills) 50%
Long Term Bonds (T-Notes or Bonds) 25%
Equity (Stocks) 25%
If the short term bills are at 6%, long term bonds at 8% and stocks at 11%, the expected return on the account would be a weighted average of the returns
| T bills | 6% x 50% = 3% |
| T-Notes and Bonds | 8% x 25% = 2% |
| Stocks | 11%x 25%= 2.75% |
Expected total return 7.75%
This return is realistic over the long term, but due to the volatility of
the bonds and stocks, the short term range could be from -.75% to 16.25%.If
the client was willing to take a slightly more aggressive approach, the following
grouping of investments would return:
Short Term Debt (T- Bills) 33%
Long Term Bonds 33%
Stocks 33%
The expected return would be
| T bills | 6% x 33% = 2% |
| T-Notes and Bonds | 8% x 33% = 2.65% |
| Stocks | 11%x 33%= 3.65% |
Expected Total Return 8.30
The overall volatility would increase and the short term returns would statistically range from -3% to 19.50%. If the clients would accept a more aggressive approach- perhaps keyed to a longer time horizon, the mix of the portfolio might yield:
| T bills | 6% x 15% = .90% |
| T-Notes and Bonds | 8% x 20% = 1.60% |
| Stocks | 11%x 65%= 7.15% |
Total Expected Return 9.65%
But as expected, the volatility would increase substantially due to the higher
use of stocks. Overall, the return would be -6.6% to 25.90%
Wrap accounts however have been increasing in numbers as well as sophistication. Such accounts now consider not only the standard domestic income, balanced and growth accounts but international accounts as well. But the more esoteric the investments become, the greater the potential risk for lower returns and the greater the capabilities of the manager is required.