Highlights With inflation probably having bottomed, especially in the U.S., investors are starting to worry about inflation tail-risk and wonder whether inflation-linked bonds (ILBs) are an efficient way to hedge this risk. This Special Report explains how ILBs work in different countries and analyzes their performance characteristics over time. We find that ILBs, a rapid growing asset class, can be a beneficial addition to a balanced global portfolio even though recent history does not show as strong portfolio diversification benefits as a longer history. The lower nominal duration of ILBs is a useful feature for portfolio duration management. ILBs have proven to be a good inflation hedge in a rising inflationary environment, but they underperform nominal bonds in a disinflationary environment. As such, the balance between ILBs and nominal bonds should be managed tactically based on an investor's views on inflation dynamics and valuation. Overweight U.S. TIPS; avoid U.K. linkers. Australian TIBS are a cheap yield enhancer, but higher yielding Mexican Udibonos are a dangerous yield trap. Feature BCA's view is that the 35-year bull market in bonds is ending and that the path of least resistance for bond yields globally is up.1 Even though the level of inflation in the U.S. is still below the Fed's target of 2%, we think it's clear that U.S. inflation has bottomed for this cycle. Globally, loose monetary policy together with the likelihood of more fiscal stimulus, present the risk of higher inflation down the road. Global Asset Allocation has recommended investors to overweight U.S. TIPS (Treasury Inflation Protected Securities) relative to nominal U.S. government bonds throughout 2016. Many clients have asked for details on how TIPS work, whether there are similar securities in other countries, and how ILBs fit into a balanced global portfolio. In this Special Report, we take a detailed look at inflation-linked bond markets globally and recommend some strategies for asset allocators to use them to help navigate a world of low returns and possibly higher inflation. 1. What Are Inflation-Linked bonds (ILBs)? Inflation Protection: Inflation-linked bonds are designed to hedge inflation risk by indexing the bonds' principal to the official inflation index in the issuer country. While the methodology and what the bonds are called differ from country to country, the underlying concept is the same: the holders of ILBs will get the stated real return even in an inflationary environment since both the nominal face value and the nominal coupon payments change based on an official inflation measure. Deflation Floor: In the case of sustained deflation such that the final nominal face value falls below the initial face value, however, the repayment of principal at maturity is guaranteed in the majority of the countries, but not, for example, in the U.K., Canada, Brazil, or Mexico (Table 1). Table 1Basic Information Of Global ILB Markets
TIPS For Inflation-Linked Bonds
TIPS For Inflation-Linked Bonds
Inflation Measure: ILBs are linked to actual inflation with a time lag. As shown in Table 1, the inflation measure used varies slightly by country: in the U.S. it's the non-seasonally adjusted CPI; in the U.K. it's the retail price index (RPI); while in the euro area, France and Italy both have ILBs linked to local CPI ex tobacco and EU HICP ex tobacco, with the former primarily for domestic retail investors. The time lag is three months in most countries, but can vary from one to eight months as shown in Table 1. A Rapidly Growing Asset Class: The earliest recorded ILBs were issued by the Commonwealth of Massachusetts in 17802 during the Revolutionary War. Finland introduced indexed bonds in 1945, Israel and Iceland in 1955. Brazil introduced its indexed bonds in 1964 and has become the largest ILB market in the emerging markets and the third largest globally. When the U.K. issued its first "linkers", it originally used eight months of inflation lag to make sure the next coupon payment is known at the current coupon payment date. In 1991 Canada issued its first ILBs and the "Canadian Model", which uses a three-month lag to the inflation index and calculates a daily index ratio using linear extrapolation, has been adopted widely since; even the U.K. adopted it in 2005. The largest ILB market now is the U.S. TIPS with a market cap of USD 1.2 trillion. TIPS were first issued in 1997, using the Canadian model. Chart 1 shows the evolution of the ILB markets globally. Since the Bloomberg Barclays Universal Government Inflation-linked Bond Index was constructed in July 1997, the market cap has increased to over USD 3.2 trillion from a mere USD 145 million at the end of 1997. It's worth noting that the actual amount of ILBs outstanding globally is slightly larger than this because not all debts are included in the index.3 Even though many countries have issued ILBs, and emerging markets (EM) grew very fast in the 2000s, the global market is still dominated by the top three countries (the U.S., U.K., and Brazil) with a combined share of 70% of global market cap. Chart 1ILBs: A Fast Growing Asset Class
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bca.gaa_sr_2016_10_28_c1
Chart 2U.S. BEI Vs. Inflation Expectations
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Country Differentiation: Nominal government bonds come with different features in different countries, and the same is true with ILBs. Table 2 shows that even though the U.S. accounts for 43.6% of the developed markets (DM) index in terms of market cap, it contributes only 28.8% to overall duration while the U.K. accounts for 53% of the overall duration, because the U.K. linkers have much longer duration than the U.S. TIPS. The Canadian real return bonds (RRBs) have the second longest average duration at 16 years. Table 2Key Features of the Bloomberg Barclays Government ILB Indexes*
TIPS For Inflation-Linked Bonds
TIPS For Inflation-Linked Bonds
2. How Do ILBs Compare To Nominal Bonds? Break-Even Inflation (BEI) And Inflation Expectations: The difference between the yield on a nominal bond and the yield on a comparable ILB (a comparator) is defined as the BEI, the market-based inflation rate at which an investor is indifferent between holding a real or a nominal bond. If realized inflation over an ILB's life turns out to be higher than the BEI at purchase, then holding the ILB is better than holding its nominal counterpart. BEI on its own is not an accurate gauge of inflation expectations, because it is the sum of inflation expectations, the inflation risk premium, and the liquidity premium. One of the long-term inflation expectation measures that the U.S. Fed keeps track of is the five-year forward five-year inflation calculated using the Fed's own fitted yield curves.4 Even this measure, however, contains the inflation term premium and the relative supply/demand of 10-year BEI vs 5-year BEI. Three important observations from Chart 2 for investors to pay attention to when assessing the inflation outlook are: U.S. breakeven inflation rates have been consistently below the Fed's inflation target of 2% since 2014 (panel 4); The CPI swaps markets priced in a much higher inflation rate than the TIPS market and the Fed's measure derived from fitted curves (panels 2 & 3), largely caused by the supply and demand imbalance in the inflation swaps market: there is excess demand to receive inflation, but no natural regular payer of inflation other than the U.S. Treasury via TIPS, therefore a higher fixed rate has to be paid to receive inflation; The 10-year inflation expectation from the Cleveland Fed's model5 (panel 1), exhibits very different behavior from the other measures. It has been below the 2% target since 2011. This model attempts to combine survey-based inflation expectations and that derived from the CPI swaps market. It's intended to be a "superior" measure of inflation expectations from a monetary policy perspective.6 For investors, however, it's advisable to take into account all these measures when assessing inflation dynamics. Duration and Yield Beta: Duration is measured as the bond price change in relation to the yield change. Chart 3 shows that ILBs have higher duration than their nominal counterparts. These two durations, however, are not directly comparable because ILB duration is related to "real yield" while nominal bond duration is related to "nominal yield". The conversion from one to another is not straightforward because the relationship between real and nominal yields can be complex.7 In practice, however, we can run a simple regression to get ILB's yield beta to change in nominal yield.8 Some practitioners simply assume 0.5 in the emerging market.9 Our research shows that in the developed market the relationship between real yield and nominal yield can vary over different time periods and in different countries, but the moving 3-year and 5-year yield betas are always less than 1 and mostly above 0.5, which is the full sample average.(Chart 4). This is a useful feature for duration management and curve positioning. For example, everything else being equal, 1) replacing nominal government bonds with comparable ILBs can reduce portfolio duration, and 2) replacing a short-dated nominal bond with a longer-dated ILB could maintain the same duration. Chart 3Average Government Bond Duration
Average Government Bond Duration
Average Government Bond Duration
Chart 4ILBs' Yield Beta
TIPS For Inflation-Linked Bonds
TIPS For Inflation-Linked Bonds
Total Return: By design, ILBs should do well in an inflationary environment and they should outperform their nominal bonds when realized inflation is higher than the break-even inflation rate. How have ILBs performed in the real world? Unfortunately, we do not have a long enough data history to cover different inflation cycles. Chart 5 confirms that in nominal terms ILBs outperform their nominal counterparts when inflation rate trends higher. What's interesting, however, is that it is disinflation, rather than deflation, that hurts ILBs the most. Within the available data history, only 2009 experienced a brief deflation scare globally, yet the rebound in ILBs actually led economies out of the deflationary environment. Over the long run, U.K. linkers have underperformed nominal gilts since their first issuance in 1981 when inflation was running at 12%. Since 1997 when the Bloomberg/Barclays ILB indexes were constructed, however, ILBs have performed slightly better than their nominal comparable bonds in most countries, with the exception of the euro area where ILBs have fared slightly worse (Chart 5). Risk-Adjusted Return: On a risk-adjusted basis, the available data history shows that ILBs performed slightly better in the U.S. and Australia, and also the DM aggregate on a hedged basis, but slightly worse in the euro area, the U.K. and Canada. It's worth emphasizing, however, that in either case the difference is not significant (Table 3). Chart 5ILB Performance Vs Inflation
ILB Performance Vs Inflation
ILB Performance Vs Inflation
Table 3ILBs Approximately Equal To Nominal Bonds
TIPS For Inflation-Linked Bonds
TIPS For Inflation-Linked Bonds
3. What's The Role Of ILBs In A Balanced Portfolio? Bridgewater Associate showed that adding ILBs to a balanced euro zone stock/bond portfolio significantly improved the efficient frontier over the very long run, from 1926 to 2010.10 Since there were no ILBs in the early part of that history, ILB returns were calculated based on inflation. Our research, based on data from the Bloomberg/Barclays Inflation-Linked Government Bond Index with a much shorter history, however, does not yield the same results, probably because the much shorter recent history does not include any highly inflationary periods from which ILBs benefit the most. Table 4 shows the statistics of replacing a certain portion of the nominal bonds with comparable ILBs in a DM 60/40 stocks/bonds portfolio. On a standalone basis, the hedged USD DM ILBs are less volatile and have the best risk-adjusted return of 1.3 in the sample period (Portfolio 8). When combined with equities, however, the nominal bonds are a slightly better diversifier than the ILBs. Why? The answer lies in the correlation. Chart 6 shows that the ILBs have much higher correlation with equities than the nominal bonds do with equities. This makes sense because equities could rise in an inflationary environment if the higher inflation were driven by stronger growth, while inflation is always bad for nominal bonds. Again, the differences in risk-adjusted returns are not significant, varying from 0.77 to 0.7 (Portfolios 2-6) in line with the findings in Section 2. Table 4Balanced Global Portfolio Statistics*
TIPS For Inflation-Linked Bonds
TIPS For Inflation-Linked Bonds
Chart 6Global Stocks-Bonds Correlations
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4. Inflation Has Bottomed BCA's Fixed Income Strategy team has written extensively about the outlook for U.S. and global inflation.11 We concur with their view that, even though inflation in most DM countries is still below the targets set by their central banks (Chart 7), in most countries it has probably bottomed (top three panels in Chart 7), and especially in the U.S., where all indicators point to rising wage pressures as labor market slack diminishes (Chart 8). Chart 7Inflation Still Below Target
Inflation Still Below Target
Inflation Still Below Target
Chart 8Accelerating Wage Pressure
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5. Investment Implications Overweight U.S. TIPS Over Nominal Treasuries: We have shown that ILBs outperform comparable nominal bonds in a rising inflation environment and have argued that inflation has bottomed in the U.S. These views support our recommendation to overweight U.S. TIPS relative to nominal U.S. Treasuries. In addition, our TIPS valuation models (Chart 9) show that breakeven inflation rates in the U.S. are still below fair values based on underlying economic and financial drivers. Being the largest ILB market with a market cap of over USD 1.2 trillion, TIPS are very easy to trade. Currently, only five-year TIPS have a negative yield, so there are plenty of opportunities for investors to preserve real purchasing power by holding longer maturity TIPS. Avoid U.K. Linkers: The U.K. linkers market is the second largest after the U.S., with a market cap of about USD 810 billion. Unfortunately, these linkers are among the most expensively priced real return bonds, with negative yields at all maturities (Chart 10, panel 3). For example, 10-year linkers are currently yielding -1.98%, which means that investors are guaranteed to lose 18% of real purchasing power in 10 years by holding the bonds to maturity. Granted, the U.K. linkers have always traded at a premium to U.S. TIPS and many other ILB markets due to the nature of the U.K. pension schemes which link pension liabilities to inflation (CPI or RPI). With insatiable appetite from pension funds, demand greatly exceeds what the linkers and inflation swaps markets can supply. U.K. real yields have been driven lower and lower, causing an increasing funding gap which in turns drives yield further down.12 In addition, our fair value model (Chart 10, panels 1 and 2) shows that the U.K. linkers' current breakeven rates are above fair value. The collapse in the linkers' yields after the Brexit vote is also consistent with a skyrocketing in the CPI swaps rate, indicating that the probable rise in inflation due to the collapse of the GBP has now largely been priced in (panel 4). Investors who are not constrained by U.K. pension regulations should avoid U.K. linkers. Chart 9Overweight U.S. TIPS
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bca.gaa_sr_2016_10_28_c9
Chart 10Avoid U.K. Linkers
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bca.gaa_sr_2016_10_28_c10
Yield Enhancement From Australia, Not From Mexico: The U.S. TIPS market is liquid but yields are low, albeit higher than U.K. linkers. Among the smaller markets with higher yields, we prefer Australian Treasury Indexed Bonds (TIBS) over Mexican Udibonos, even though the 10-year Udibonos have a higher yield of 2.8% compared to the 10-year TIBS yield of 0.62%. As shown in Chart 11 and Chart 12, the Australian TIBS are very cheap while the Mexican Udibonos are very expensive. The BEI in Mexico is above the central bank's target of 3% while in Australia it's still at the lower end of the target range of 2-3%. Chart 11 Australian TIBS: A Cheap Yield Enhancer
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bca.gaa_sr_2016_10_28_c11
Chart 12 Mexico ILBS: Too Expensive
Mexico ILBS: Too Expensive
Mexico ILBS: Too Expensive
6. ETFs Some of our clients always want to know if there are ETFs for the asset classes we cover. For ILBs, the most liquid ETF is the iShares TIPS Bond ETF with an AUM of USD 19 billion and an expense ratio (ER) of 20 bps. For non-U.S. global ILBs, the SPDR Citi International Government Inflation-Protected Bond ETF has an AUM of USD 620 million and an expense ratio of 50bps. The Appendix on page 14 gives a sample list of the exchange traded ILB funds. For more information about ETFs, please see BCA's newly launched Global ETF Strategy service. AppendixSample List Of ILB ETFs***
TIPS For Inflation-Linked Bonds
TIPS For Inflation-Linked Bonds
Xiaoli Tang Associate Vice President xiaolit@bcaresearch.com 1 Please see Global Investment Strategy Special Report, "The End of the 35-year Bond Bull Market," July 5, 2016, available at gis.bcaresearch.com. 2 Robert Shiller, "The Invention of Inflation-Linked Bonds in Early America," NBER Working Paper 10183, December 2003. 3 Barclays Index Methodology, July 17, 2014. 4 Refet S. Gurkaynak et al., "The TIPS Yield Curve and Inflation Compensation," May 2008, Federal Reserve publication. 5 Joseph G Haubrich et al., "Inflation Expectations, Real Rates, and Risk Premia: Evidence from Inflation Swaps," Working Paper 11-07, March 2011, Federal Reserve Bank Of Cleveland. 6 Joseph G. Haubrich And Timothy Bianco, "Inflation: Nose, Risk, and Expectations," Economic Commentary, June 28, 2010, Federal Reserve Bank Of Cleveland. 7 Francis E. Laatsch and Daniel P. Klein, "The nominal duration of TIPS bonds," Review of Financial Economics 14 (2005). 8 Mattheu Gocci, "Understanding the TIPS Beta," University of Pennsylvania, 2013. 9 Thor Schultz Christensena and Eva Kobeja, "Inflation-Linked Bond from emerging markets provide attractive yield opportunities," Danske Capital, May 2015. 10 Werner Kramer, "Introduction to Inflation-Linked Bonds," Lazard Asset Management, 2012.