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Gold is on the rise. It recently
surpassed $630 per ounce, an increase of more than 145% from its low of $254.
As of mid-2005, it has increased approximately 30% in all currencies, and is
no longer simply reflecting US-dollar weakness. Media coverage attributes
these increases to supply shortfalls, geopolitical concerns, rising oil
prices, inflation fears and US financial imbalances. The reports typically
focus on trading implications, since most investors and analysts think of
gold as a short-term speculative trade in an industrial commodity. Platinum
and silver have both outperformed gold since 2000, but they have received
little attention. There is, however, an important reason why investors should
pay attention to precious metals: strategic asset allocation.
Strategic asset allocation ensures a
fully diversified investment portfolio by properly balancing asset classes of
different correlations in order to maximize returns and minimize risk. While
many investors believe their portfolios are diversified, they typically
contain only three asset classes - stocks, bonds and cash. Real estate,
commodities, precious metals and collectibles rarely form part of most
investors' portfolios. Containing only three asset classes out of seven, such
portfolios are clearly not adequately diversified. Precious metals provide
effective diversification and improve returns, while at the same time
reducing volatility during both bear and bull markets. The old Wall Street
saying, "Put 10% of your money into gold and hope it doesn't work,"
still holds true today.
The validity of this old adage was
recently confirmed in a June 2005 study carried out by Ibbotson Associates.
Bullion Management Services Inc. commissioned the study, entitled
"Portfolio Diversification with Gold, Silver and Platinum." Rather
than examine the fundamental reasons behind the current bull market in commodities,
it addresses the fact that relatively little research has been done on the
role of precious metals in strategic asset allocation. Particular attention
was spent on the correlations of precious metals with traditional asset
classes, and how this relates to diversification. Importantly, the Ibbotson
study did not take into account the various drivers currently contributing to
rising prices. Instead, it used current (low) CPI statistics, and projected a
continuance of similar performance for equity and bond markets.
Low correlations between asset
classes are the basis for diversification. Many investors believe their
portfolios are diversified if they contain a mix of stocks, bonds and cash.
Unfortunately, correlations between traditional asset classes have been on
the rise resulting in portfolios that are not adequately diversified. From
1926 to 1969, the correlation between annual total returns for US stocks and
bonds was an attractive -0.02. Recently, US stock and bond market
correlations have increased. This tendency is reflected in the 10-year
rolling correlations from 1970 through 2004 that ranged from -0.03 to 0.80.
The uncertain diversification benefit, in combination with attractive returns
observed in other asset classes, drives the vigor with which opportunities in
non-traditional (or alternative) asset classes have been pursued in recent
years. The primary method for improving the risk-return characteristics of
the efficient frontier is to expand the opportunity set of available asset
classes.
Ibbotson's study examined a 33-year
time period from February 1971 to December 2004. While there is data
available for gold and silver that predates 1970, it is less pertinent
because the US dollar was still convertible to gold at that time, and the price
of gold was fixed. After US President Richard Nixon closed the gold window on
August 15, 1971, the price of gold was allowed to float.
Although there is some debate on what
constitutes an asset class, it is generally agreed that there are capital
assets such as stocks, bonds and real estate, consumable assets such as
commodities and store-of-value assets such as currency and fine art. The fact
that precious metals are both consumable assets and store-of-value assets is
not well understood by the investment community. While the three constituents
are all precious metals, gold and silver have a long history as monetary
assets and are often viewed as a safe harbor during times of crisis or high
inflation. Conversely, during an economic expansion, the commodity demand for
silver and platinum is thought to increase.
Since an investment in mining stocks
does not provide a direct exposure to precious metals, the study focuses on a
direct, physical investment in an equally weighted portfolio or composite of
gold, silver and platinum bullion. Ibbotson constructed an equally weighted
composite index using gold, silver and platinum bullion, and referred to it
as the Spot Precious Metals Index (SPMI). Ibbotson used this Index as a proxy
for the precious metals asset class.
Over the entire 33-year period, the
three equity asset classes outperformed the other asset classes. The overall
performance of the SPMI was closer to that of the fixed income asset classes.
The SPMI outperformed both cash and inflation. For over 11 years (May 1973 to
August 1984) the SPMI was the top-performing asset class, with the longest
run of any of the asset classes. During the low inflation period, the SPMI
had the lowest compounded annual return. During the high inflation period,
the compounded annual inflation rate was 8.62%, and the SPMI had the highest
compounded annual return of 20.83%. For the period studied, precious metals
provided a substantial hedge against inflation.
While the standard deviation of the
SPMI is quite high in isolation, according to modern portfolio theory it is
the interaction of asset classes with each other that provides
diversification. Of the 33 years of annual data, there were nine years during
which US large-cap stocks had negative returns. During these nine years, the
SPMI had the highest average arithmetic return.
Of the 33 years of annual data
studied, there were six years that the equally weighted portfolio of
traditional asset classes had negative returns. The average arithmetic return
of the portfolio of equally weighted traditional asset classes for these six
years was negative 3.5%. For the same six years, the average arithmetic
return of the SPMI was a positive 13.4%. Precious metals provided positive
returns when they were needed most.
Of the seven asset classes, precious
metals is the only one with a negative average correlation to the other asset
classes. It is also worth noting that, excluding cash, precious metals is the
only asset class with a positive correlation coefficient with inflation,
which is further evidence that precious metals act as a hedge against
inflation.
Historical Correlations (1972 - 2004)
|
Asset
Class
|
US Large Cap Stocks
|
US Small Cap Stocks
|
Inter-national
Equity
|
Spot Precious
Metals Index (SPMI)
|
US Long-term Gov’t
Bonds
|
US Inter-mediate-
term Gov’t Bonds
|
Cash (US 90 Day
Treasury Bills)
|
US Inflation
|
|
US Large Cap Stocks
|
1.00
|
0.79
|
0.59
|
-0.10
|
0.28
|
0.22
|
0.04
|
-0.22
|
|
US Small Cap Stocks
|
0.79
|
1.00
|
0.47
|
0.05
|
0.13
|
0.10
|
-0.01
|
-0.06
|
|
International
Equity
|
0.59
|
0.47
|
1.00
|
0.04
|
0.08
|
-0.02
|
-0.10
|
-0.19
|
|
Spot Precious
Metals Index (SPMI)
|
-0.10
|
0.05
|
0.04
|
1.00
|
-0.18
|
-0.19
|
-0.03
|
0.43
|
|
US Long-term
Government Bonds
|
0.28
|
0.13
|
0.08
|
-0.18
|
1.00
|
0.93
|
0.04
|
-0.39
|
|
US Intermediate
Term Bonds
|
0.22
|
0.10
|
-0.02
|
-0.19
|
0.93
|
1.00
|
0.29
|
-0.22
|
|
Cash (US 90 Day
Treasury Bills)
|
0.04
|
-0.01
|
-0.10
|
-0.03
|
0.04
|
0.29
|
1.00
|
0.63
|
|
US Inflation
|
-0.22
|
-0.06
|
-0.19
|
0.43
|
-0.39
|
-0.22
|
0.63
|
1.00
|
|
Average Correlation
(Excluding Inflation)
|
0.26
|
0.22
|
0.15
|
-0.06
|
0.18
|
0.19
|
0.03
|
-0.15
|
The historical efficient frontier
with precious metals is superior to the historical efficient frontier without
precious metals. With the exclusion of the maximum return asset allocation,
including precious metals in the opportunity set improved the risk-return
tradeoff over the entire historical efficient frontier. Importantly, the
allocation to precious metals does not come at the expense of any single
asset class, but rather it comes from a reduction in several asset classes.
This suggests that the unique risk/reward profile of precious metals makes
them a useful diversification tool in strategic asset allocation.
Based on the historical efficient
frontiers, Ibbotson found that including precious metals moderately improved
the efficient frontier. Allocations ranged from approximately 0% to 9%. Based
on the forward-looking resampled efficient frontiers, asset allocations that
include precious metals have better risk-adjusted performance (as measured by
Sharpe ratio) than asset allocations without precious metals. Investors can
potentially improve the risk/reward ratio in conservative, moderate, and
aggressive asset allocations by including precious metals with allocations of
7.1%, 12.5%, and 15.7%, respectively. These results suggest that including
precious metals in an asset allocation may increase expected returns and reduce
portfolio risk.
Asset Allocations
|
|
Conservative
|
Moderate
|
Aggressive
|
|
Asset Class
|
With Precious
Metals
|
Without Precious
Metals
|
With Precious
Metals
|
Without Precious
Metals
|
With Precious
Metals
|
Without Precious
Metals
|
|
U.S. Large Cap
Stocks
|
7.6%
|
4.5%
|
20.4%
|
15.5%
|
18.1%
|
19.2%
|
|
U.S. Small Cap
Stocks
|
8.0%
|
10.3%
|
12.7%
|
17.6%
|
34.0%
|
32.5%
|
|
International
Equity
|
6.5%
|
9.6%
|
19.7%
|
21.5%
|
25.4%
|
31.6%
|
|
Spot Precious
Metals Index (SPMI)
|
7.1%
|
0.0%
|
12.5%
|
0.0%
|
15.7%
|
0.0%
|
|
U.S. Long-term
Government Bonds
|
3.9%
|
2.4%
|
8.2%
|
8.3%
|
5.3%
|
7.9%
|
|
U.S. Intermediate
Term Bonds
|
31.0%
|
30.0%
|
21.1%
|
25.4%
|
0.1%
|
5.3%
|
|
Cash (U.S. 90 Day
Treasury Bills)
|
35.8%
|
43.2%
|
5.5%
|
11.8%
|
1.5%
|
3.6%
|
|
Expected Return
|
6.2%
|
6.0%
|
9.0%
|
8.6%
|
11.6%
|
11.1%
|
|
Standard Deviation
|
6.0%
|
6.1%
|
12.0%
|
12.0%
|
18.1%
|
18.1%
|
|
Sharpe Ratio
|
0.464
|
0.426
|
0.472
|
0.437
|
0.453
|
0.428
|
While there are many paper proxies
for precious metals that can provide trading opportunities during a bull
market, the hedging benefits and protection against Fat-Tail events such as a
currency crises or derivatives accident may only be available if actual
bullion is held. Many precious metals investments are simply counter-party
liabilities and not an actual investment in bullion. In the event of a
counter-party default, the benefits of bullion may not be realized at exactly
the time when they are needed most. From a strategic asset allocation point
of view, therefore, it is critical that fully allocated, segregated and
insured gold, silver and platinum bullion is held.
For a full copy of the Ibbotson
report contact Bullion Management Services Inc. at info@bmsinc.ca.
*All dollar amounts expressed in US
currency unless otherwise indicated.
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