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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 reward/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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