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Diversification
and Portfolio Design
The concept of
diversification is not new to portfolio design. In stocks, bonds, and
even real estate there is a general rule that diversification helps
reduce risk and increase profit potential. In theory, diversification
spreads your exposure among financial vehicles that have different
risks and respond to different factors. For example, you might invest
in commercial and residential real estate to diversify between
properties that may respond to the business cycle or to consumer
sentiments. Within commercial and residential real estate you can
break down diversification between property types like office
buildings, strip malls, retail space, town houses, apartments,
individual homes, entire developments, etc.
Stock investors
usually refer to "industry sectors" with gross categories
like transportation, utilities, industrials, and services. These are
further refined into "sector groups" like medical,
computers, aviation, rail, gold mining, automotive, retail,
publishing, and more. Within these groups, you can diversify into
drugs, hospitals, medical devices, and alternative care for
"medical." You may break out software, hardware, internet,
communications, and maintenance for the "computer" sector
group.
For interest rate
instruments like bonds, notes, and bills we separate by maturity,
yield, commercial issues, and government paper. Within certain groups
are particular types of instruments like "zero coupon" and
even the "backing" behind the paper will be different.
Commodities and
related options also have various degrees of diversification. Like
stocks, there are specific sectors. The most generally followed are:
Agricultural
Metals
International
Softs
Industrials
Interest rates
Currencies
Stock Indices
Price Indices
Energy
Within these
sectors, there are specific "groups." Here are the most
common groups associated with sectors in the U.S. markets:
Agricultural -
Grains, meats, foods
Metals - Copper,
silver, gold, platinum, palladium
International Softs
- sugar, coffee, cocoa
Industrials -
lumber, cotton
Interest rates -
bonds, notes, bills, municipals
Currencies -
foreign exchange and Dollar index
Stock Indices - S
& P 500, mini S & P, NYFE Index, Value Line Index, Nikkei
Price Indices - CRB
Index
Energy - Crude oil,
heating oil, gasoline, natural gas
You should notice
that some "groups" represent individual commodities while
others can be broken down into group members. Grains encompass wheat,
corn, oats, canola, rice, soybeans, and soybean products. Meats cover
live cattle, feeder cattle, lean hogs, and pork bellies. Interest
rates include 90-day bills, 2-year notes, 5-year notes, 10-year notes,
30-year bonds, and municipal bonds. Foreign exchange incorporates
British Pounds, Japanese Yen, Deutschmarks, French Francs, Australian
Dollars, Canadian Dollars, Mexican Pesos, and Swiss Francs. (This may
change with the introduction of the "Euro")
Finally, there is
diversification over time. For agricultural commodities, different
delivery months represent important diversification because some
contracts are base upon "old crops" left from a previous
harvest while others reflect "new crops" yet to be
harvested. "Spread" transactions are frequently based upon
the supply and demand differences between old and new crops. For
interest rates and currencies, time diversification allows traders to
extend transactions over long periods or take advantage of seasonal
differentials brought about by the end of fiscal years or holiday
seasons.
In stocks,
diversification is associated with a negative correlation between
issues. The objective is to reduce risk and exposure by buying stocks
that are less likely to move in tandem. If steel makers are not
positively correlated with food processors, it is wise to buy each so
that adversity in one will not necessarily impact the other. However,
if steel is positively correlated with auto manufacturing, you would
own one or the other, but not both. In theory, you avoid the risk that
both stocks will be negatively affected by the same economic
conditions.
In futures and
options trading the logic is similar. The greater your
diversification, the lower the overall risk. However, since futures
and options provide profit opportunities in up and down markets with
equal ease, the basis for diversifying is different than for stocks or
other investments. The objective when trading futures and options is
to be in the right markets at the right time... in the right posture.
Clearly, not all futures markets are will trend at the same time. When
prices are stable, opportunities are slack. When you are dealing with
raw materials or flat interest rates, you cannot expect substantial
price movement. This suggests that your objective when selecting a
commodity or options portfolio is to pick diverse complexes to assure
being in one or more trending markets at the correct moment.
You should keep in
mind the fact that negative or positive correlation between
commodities is not as important as the effectiveness of your trading
strategy. Yes, corn and soybeans may move together. Buying or selling
both may over weight your portfolio with positively correlated grains
that can be affected by rain, exports, etc. Yet, if your strategy is
able to accurately forecast both markets, the positive correlation has
less significance than a similar pair of stocks. With stocks, the
portfolio assumption is that you are always "long" (a buyer)
looking for price appreciation.
Commodities offer
several levels of diversification that can accommodate capital from as
little as $5,000 to several million. A small account might start a
program following one grain, one metal, one meat, and one currency. As
capital grows (hopefully), an interest rate, soft commodity, and
energy contract can be added. Once all sectors are represented by at
least one commodity, you can move to the next diversification level
with multiple commodities within each sector. Finally, you can trade
multiple contract expirations for each commodity.
This simple
approach provides a stepladder for growing your commodity trading
program while managing risk through diversification. The COMMODEX
System tracks 47 U.S. commodities with as many as 100 contract months.
This permits trading with small capital or very large capital.
COMMODEX is organized by complex and commodity to make the selection
easy and fast. A complete explanation of portfolio design and money
management comes with the COMMODEX Commodity Trading Kit which is part
of the subscription service.
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