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Product and Strategy Notes: New Analyses on Gold as an Asset Class and Financial Advisers' Corner

New Analyses on Gold as an Asset Class

Two pieces of research recently came to our attention that merit another look at gold as an asset class, which we most recently covered in our January 2010 issue. The first is a paper that was written in 2005 by Faugere and Van Erlach, titled "The Price of Gold: A Global Required Yield Theory." The authors begin with a statement that most would agree with: "Assessing the fair value of gold largely remains a mystery in finance." With that in mind, they offer "an asset pricing theory that treats gold as a store of wealth." Their core assumption is what they term "required yield theory" "explains the valuation of financial assets via investors' general requirement to earn a minimum expected after tax real return equal to long-term GDP per capita growth." Based on data from the IMF World Economic Database, we estimate that the average growth rate of real global GDP/capita between 1981 and 2009 was 1.8% per year. We also observe that this very roughly corresponds to the average growth rate for total factor productivity over this period (average annual real GDP growth of 3.3%, less average annual population growth of 1.5%).

The authors further note that, "gold fulfills the unique value of a global store of value...that is, a hedging instrument against inflation and the collapse of value of other asset classes." They then assert that, "(1) the global real price of gold essentially is a real Price/Earnings ratio for gold, where 'earnings' represent purchasing power or a global price index...We define the forward P/E for gold as the nominal price of gold divided by the expected GDP price deflator in the next period; (2) The global real price of gold must vary inversely to all other main financial asset classes real price/earnings ratio in order to preserve the real value of any investor's capital against adverse movements in the values of financial asset classes...Capital flows to gold are dictated by changes in the minimum expected return achievable by other asset classes...Our theory postulates that movements in the global real price of gold occur because of the precautionary demand for gold, which largely depends in the inverse real P/E of other asset classes combined." In practice, however, the authors "assume that the main alternative investment asset class is a stock market index...[Therefore] the global real price of gold must vary inversely with the global stock market forward P/E." Put another way, a change in the earnings yield (E/P) should produce the same change in the price of gold. The authors claim that this "after-tax stock market forward earnings yield [E/P] can be viewed as a minimum expected return...which must equal a required yield given by the sum of the GDP/capita long-term growth rate and the current expected inflation rate." So if either of these changes, so to does E/P and thus the price of gold.

Let's put some numbers on this. At the end of June 2010, the P/E for the FTSE All-World Index was 17.9. Inverting that, the E/P or earnings yield was 5.60%. Subtracting from that our average long-term real growth rate of global GDP/capita of 1.8% leads to an implied expected inflation rate of 3.8%. The just published IMF World Economic Outlook update forecasts an average global inflation rate in 2011 of 2.9%. Adding back our 1.8% long-term real GDP/capita growth rate gives us a target earnings yield of 4.7%. Inverting that gives us a target P/E of 21.3% -- a 19% increase over the current 17.9 P/E. That implies a fall in gold prices of (19%). Applying that to the current gold price of $1,186 gives a forecast 2011 gold price of $961. Of course, if the current fears of deflation are accurate, then the IMF’s forecast for global inflation in 2011 could be much too high. In that case, based on the authors' theory, the gold price would fall by much, much more next year.

So what are we to make of this approach to determining the fundamental value of gold? We have an issue with the author's basic assumption that investors seek the same real earnings yield on all asset classes, which is equal to the long-term average growth of real global GDP/capita (which, as we noted, roughly corresponds to the long-term rate of total factor productivity growth). At the highest level of aggregation, and in the long-run, it is certainly true that total factor productivity growth determines the size of the pie that can be divided between wages paid to labor, returns to capital providers, and taxes. However, even in this case, changes in the bargaining power of these three groups should cause their returns to vary across countries and over time. At a more micro level, in so far as different asset classes have more or less uncertainty and risk, so too should investors require higher or lower real returns to hold them. On balance, we think both theory and evidence weigh against the assumption of "required yield theory."

But that doesn't necessarily mean that gold could not, as the authors assert, serve as a hedge against varying real earnings yields (or, inversely, P/Es) in a given asset class. In their paper, the authors compare gold to equities. In this regard, we noted the following in our January 2010 article on gold's potential long-term role in a portfolio: "In "Is Gold a Hedge or a Safe Haven?", Baur and Lucey distinguish between hedges, where one asset class has a long-term negative or zero correlation of returns with another, and "safe havens" where this relationship only occurs under extreme conditions. Examining U.S., U.K. and German stock and bond prices, they find that "gold is a hedge against stocks, gold is a safe-haven in extreme stock market conditions, but gold is neither a hedge nor a safe haven for bonds." In a subsequent paper ("Is Gold a Safe Haven? International Evidence”), Baur and McDermott find that "gold is a safe haven for major European and U.S. equity markets, but not for Australian, Canadian, Japanese or large emerging equity markets." In light of this, we would say that other evidence only partially supports the authors global contention that changes in equity P/Es  (and inflation) drive changes in real (nominal) gold prices. However, given the outsized impact of the U.S. equity market on global perceptions of uncertainty, we think the author's approach has some merit.

So let's repeat our previous calculations, this time focusing only on the U.S. equity market, where, using the same FTSE All World data, the end of June P/E was 21.9. Inverting that gives an earnings yield of 4.57%. Subtract the 1.8% long-term productivity growth assumption and you get an implied inflation expectation of 2.77%. The most recent IMF World Economic Outlook forecasts 2011 U.S. inflation of only 1.86%. Add the 1.8% productivity growth assumption to this to get an expected 2011 earnings yield of 3.66%. Invert that to get a forecast P/E of 27.32. Since this represents a 24.75% increase in the P/E, it implies, per the authors' theory, a decrease of the same percentage in the price of gold, or a decline to $892/ounce from the current price of $1,186/ounce.

Let's now compare this to another approach to fundamentally valuing gold, which we described in our January 2010 analysis. We will also modify that approach a bit, to incorporate some aspects of the just described "required yield theory." Our approach to asset pricing theory is based on a few key assumptions: (1) Asset prices reflect the interaction of the supply of and demand for real returns from a given asset class; (2) The supply of returns reflects the current yield provided by an asset class, plus expected changes in its price over a given period of time; (3) The demand for returns reflects the prevailing real risk free rate plus a required risk premium; (4) Imbalances between the supply of and demand for returns are normal feature of asset markets; (5) While asset markets are drawn to an equilibrium where the supply of returns equals the demand for returns, they can operate far from equilibrium for extended periods of time; and (6) Asset markets return to equilibrium due to changes in all four underlying variables -- the current yield of the asset, expectations for future price changes, the real risk free interest rate, and required risk premiums.

In our January article, we described we would expect the real price of gold to increase by about 1.75% per year -- the difference between our assumed long-term growth rate of real global GDP of 3.25% per year and our assumed long-term growth rate of the world stock of gold of 1.50% per year. When we looked at the return for holding gold that an investor would logically demand, in terms of a risk premium above the real risk free interest rate, we found that it varied considerably depending on the regime that prevailed. In normal times, the risk premium has been negative (about 2.0% annually), reflecting the fact that gold plays the role of portfolio insurance, for which, in normal times, an investor should logically expect to pay, rather than receive, a risk premium. However, this insurance policy is expected to pay off under the high inflation and high uncertainty regimes, when the risk premium above the real risk free rate turns positive, ranging between 2.5% in the high inflation regime to 2.0% in the high uncertainty regime. Building on the required yield theory, we can further expand our description of the supply of gold returns, viewing 1.75% per year as the normal "income return" from holding gold, and adding to it the change in the price of gold that is driven by changes in perceived uncertainty and expected inflation -- call it the "uncertainty return". We thus have a fully specified supply and demand equation for gold returns, with the return supplied equal to 1.75% plus the uncertainty return under some regimes, and the return demanded equal to the risk free rate plus the required risk premium.

This raises the obvious question of how these variables change to restore the system to equilibrium when supply and demand are out of balance. That is not an easy question to answer. Under the normal regime, the supply demand balance is defined by the difference between 1.75% and the risk free rate less the "insurance premium" investors are willing to pay for gold. If the latter sum is greater than 1.75%, the price of gold should tend to increase. If it is less than 1.75%, the real price of gold should fall. So far, so good -- and, more important, usually quite a stable return generating process. However, when the system shifts out of the normal regime, the gold returns process gets considerably more exciting. On the demand side there is a shift from a negative required risk premium to a positive risk premium, as the portfolio insurance provided by gold is expected to pay off. On the supply side, that should cause prices to rise by more than their long-term normal regime rate of 1.75% per year. The excitement comes when that price increase triggers investor herding, and the price increase exceeds the amount required to match the supply of returns to the demand for returns. As the system is driven further away from equilibrium, with the apparent supply of gold returns exceeding the fundamental demand for gold returns by ever-greater amounts, it becomes more fragile, as maintaining a constant annual percentage increase in price of gold requires ever larger annual dollar increases in the price of gold. Eventually the system is driven back towards equilibrium, with the gold price sharply declining.

We have also noted our view that gold is ultimately a hedge against declining trust in short term U.S. Treasury Bills (and, for some investors, the U.S. Dollar) as the safest and most liquid means of preserving the real value of one's wealth. But consider what happens to the supply/demand equation if that trust is eroded. For the supply of returns, the price of gold is driven up, and perhaps too the associated annual return from holding it. But on the demand side, declining faith in U.S. Treasuries should logically lead to a decline in the risk premium investor require to hold gold even under the high uncertainty or high inflation regimes. In this manner, declining faith in Treasuries only worsens the imbalance between the supply of and demand for returns from holding gold, and causes the gold asset pricing system to become ever more fragile. At the very least, this dynamic suggests that a commitment to systematic portfolio rebalancing is a critical requirement for anyone choosing to use gold as an asset class (as opposed to adding gold coins to the mix of currencies they hold to meet their need for liquidity and precautionary savings, rather than long-term investment needs). Moreover, our analysis also shows that, if one wants to make a long-term allocation to gold as a type of portfolio insurance, the right time to add it to a portfolio is when its price is very cheap, and not when its price has started to rapidly increase.

The second major gold research piece that caught our attention was a special section on the metal ("Store of Value") that appeared in the 10July2010 edition of The Economist. The article notes that "for investors in gold who think of it as an alternative to paper currencies, its attractiveness is intimately linked to their fears about the capacity of these other currencies to retain their value." The article goes on to note that "where the price of gold heads in the future depends on the answers to three questions. First, for how long will investors keep piling into gold? Second, if and when they quit the market, will the demand for gold jewelry revive enough to support the price near recent levels? Third, how will supply respond if the price stays high?" With respect to the first question, The Economist concludes that the answer "lies largely in the sate of the world economy. Western investors' new interest in gold has coincided with the rich world's deepest period of economic turmoil since the 1930s...In a world of unpredictable currencies, driven by fears of massive inflation and with enormous doubts about the true value of many other financial instruments, gold becomes an attractive option."

Moving to the second question, The Economist notes that "at some point, either the worst fears of the gold bugs must be realized -- in which case, heaven help us -- or the world will become a less nervous place. When interest rates eventually rise, the opportunity cost of holding gold of holding gold will go up, taking off the shine...When the overall economic climate improves, so that uncertainty...is no longer so pervasive, that will provide another reason for some investors to retreat from gold." Unfortunately, "traditional markets for gold cannot be expected to pick up the [demand] slack if rich-world investors' appetites should pall." Finally, in response to the third question, The Economist concludes that "if prices [for gold] remain high, more of the world's existing stock will augment [the flow of market] supply. In theory, there is a lot more that could be sold for scrap...[and] the experience of the past year suggests that accounts of India's eternal attachment to gold are somewhat overplayed." In sum, "as long as the world economy remains uncertain and investors fear inflation and sovereign default, gold will keep its allure. Eventually, however, the price will weaken...and investors may look back on the bull run of 2009-2010, or 2009 -2011, with the sort of wonder that humanity has too often reserved for the yellow metal itself."

Advisers' Corner

Every month we review lots of research papers. Most of them are of interest only to other academics. But some of them have practical implications for our readers, either because they suggest new courses of action, or confirm the instincts of the best managers and advisers. The following are brief summaries of research papers that we believe will be of the most interest to our adviser subscribers.

| Table: Fundamental Asset Class Valuation and Recent Return Momentum | July 2010 Issue: Key Points | This Month's Letters to the Editor: Why the mix of .70 Plum Creek Timber and .30 Rayonier to Implement Your Allocation to Timber, instead of CUT ETF; How Do I Use Your Global Asset Class Valuation Analysis?; and Could you please clarify what you mean in your monthly Equity Valuation Analysis by "Low Demanded Return" and "High Demanded Return"? | Feature Article: Understanding and Predicting Uncertainty Shocks, Part 2 | July 2010 Economic Update | Investor Herding Risk Analysis | Global Asset Class Valuation Updates Detail through June 30, 2010 | Product and Strategy Notes: New Analyses on Gold as an Asset Class and Financial Advisers' Corner | Overview of Our Valuation Methodology | Uncorrelated Alpha Strategies Detail | Global Asset Class Returns | Table: Market Implied Regime Expectations and Three Year Return Forecast |



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