Register For Our Mailing List

Register to receive our free weekly newsletter including editorials.

Home / 365

Less than 1% for 100 years: watch the price risk on long bonds

In June 2017, Argentina sold US$2.75 billion of 100-year bonds at a yield of 7.92%. At the time I wrote that this was crazy and reflected a desperate chase for yield that had spilled over into emerging market debt. Now that Argentina has defaulted, for the fifth time in the last 40 years, its bonds are trading at around 40% of their face value.

Just over a week ago, Austria sold €2 billion of 100-year bonds at a 0.88% yield. So, what would it take for Austria’s bonds to trade at the same price as Argentina’s?

It's not all about the credit

Those who are familiar with the credit profiles of the respective nations might think I’m crazy to make such a comparison. It’s a fair point as Argentina had a B rating from S&P in 2017 and Austria currently has a AA+ rating. I’m not going to argue that Austria has meaningful default risk now, though over 100 years almost anything could happen.

Rather, I’m thinking about what a change in interest rate expectations could do to Austria’s century bond price.

We obviously live in a world where almost no one has any expectation of central banks lifting overnight rates soon. Low growth forecasts and low inflation expectations are widely assumed. However, the enormous amount of quantitative easing, the structural weaknesses of the European Union and/or the expected surge in government debt to GDP ratios could change the outlook. Given we are talking about 100 years this doesn’t need to happen in the short or medium term to have a substantial impact on long-term bond yields and prices.

Another risk is that economists, politicians and central bankers start to acknowledge that low interest rates and quantitative easing are short-term gain at the cost of substantial long-term pain. Inflated asset prices, debt bubbles, zombie companies, depressed economic growth and greater boom/bust cycles are all associated with current central bank policy settings.

Just as many learnt about Minsky cycles after the credit crash in 2007-2009, so many are starting to learn about the long-held positions of the Austrian economic school now. Keynesian and Modern Monetary Theory (MMT) economics are the establishment position currently. However, as major economies continue to be stuck in funks lasting decades (think Japan and Europe) the search for a better solution will grow.

The policy prescriptions of Austrian school economics have served Western economies well for hundreds of years and have created enormous growth in the living standards of their citizens. Those who care to look past the short term almost always become proponents of its key tenants of small government with limited interference in the economy, a strongly competitive private sector and a focus on freeing individuals to pursue their own prosperity.

It would be supremely ironic if a return to the wisdom of Austrian school economics brought about a crash in the price of century bonds issued by Austria!

The extraordinary price falls from rate rises on a 100-year bond

It’s time to conduct some simple modelling of what impact this would have on bond prices.

First, the small moves, where a 1 basis point change (i.e. from 0.88% to 0.89% yield) results in a 0.66% drop in the bond price. Or a 10 basis point (0.10%) increase in the yield on this bond results in a 6.37% drop in the bond price.

Second, if we start to consider substantial shifts in yields, which might occur after a build-up of evidence of a V-shaped recovery, then the bond falls by 27.1% and 45% for a 0.50%/1.00% increase in yield respectively.

That's right. A 1% rate rise and the price falls by almost half. These would be enormous losses that many investors in government bond portfolios would be horrified to see.

Lastly, some interest rate regime change scenarios, which could occur as a result of inflation spiking or central banks normalising monetary policy. A 1.50% increase in yield, from 0.88% to 2.38%, sees a 57.1% drop in the bond price.

That’s the same ballpark as the fall in Argentina’s bond price. A normalisation of rates to 4% or 5% would see the bond price fall by 76.5% and 81.8% respectively. Those outcomes would be slightly worse than an average corporate bond default with a recovery rate of around 35%.

All while Austria remains a strong credit.

 

Jonathan Rochford, CFA, is Portfolio Manager for Narrow Road Capital. This article contains general information only and is not a substitute for professional and tailored financial advice. 

 

4 Comments
Peter Thornhill
July 08, 2020

Sounds like speculation to me.

Warren Bird
July 08, 2020

Not at all.

First thing to realise is that a 100 year bond is not 3.5 times the duration risk of a 30 year bond. So the difference between that and what many investors in global markets already purchase is not as significant as the headline of the term to maturity makes it sound.

Second thing to realise is that, despite Jonathan's concerns about the potential for uninformed investors to purchase an Austrian 100 year bond, the actual situation is that the market for it is going to be long term funds like insurance funds that do this all the time. they know that the net present value of the final payment is almost zero already and it's the income flow they're after.

Third thing to realise is that they'll buy a 0.88% yielding bond because it is laid off against a long term obligation they have that they've discounted at a similar rate. That is, the income flow is suitable to their needs, which is why the market for these bonds exists in the first place.

Fourth thing to realise is that they know very well that if the yield goes up there's a capital value hit in the short term, but because they make an income decision they know that their reinvestment return will increase in that situation, which is what they're after.

So, if an investor who doesn't think like that buys this as a punt that the yield will drop and they'll make a massive short term capital gain, then that's speculation. But the market for 100 year Austrian government bonds is soundly based. The same investors bought Disney's 100 year bond back in the 1990's (I think it was) and they've bought the other long term securities that are out there. Is there duration risk? Sure. But they know that; they know what they're doing.

Warren Bird
July 08, 2020

But Jonathan, if the yield increases then you can reinvest at that higher yield and the total return over 100 years will end up being higher than 0.88% per annum. Over such a long term, reinvestment returns are a much more significant feature of bond total returns than they are for short term securities, as you know.
And the vast majority of those buying such long duration bonds are insurance and other funds with long term liabilities they need to hedge, so they will be reinvesting.
And in 100 years time the bond will repay at $100 no matter what the price does along the way. (I've written about that many times, but this article was quite popular - and it would apply to a 100 year bond in the same way as it did for this 10 year bond. https://www.firstlinks.com.au/journey-life-fixed-rate-bond )
What you've said is not wrong - the price could fluctuate by the amounts that you've calculated. But honestly, anyone who buys an X year bond with a time horizon of less than X years has rocks in their head, or is a speculator rather than an investor.
And, btw, if yields fall to, say, 0.38% for that bond, then there's a handsome capital gain awaiting. Not that that matters either.

Jonathan
July 09, 2020

Hi Warren - thanks for taking the time to comment. I agree that someone who is hedging matching liabilities could find a good use for such a bond. However, it is naive to think that there aren't speculators buying what is a particularly volatile sovereign debt instrument when central banks have suppressed yields so much. Same goes for those buying Italian and Greek government bonds of much shorter maturities.

If it goes well and the yield falls from 0.88% to 0.38% then they indeed make a 46.8% gain. The previously issued Austrian century bond is sitting on a much larger gain than this. I have no doubt there are hedge funds and other trend following speculators that can't resist a punt like this. Some of them were caught out in March as even the US government bond market locked up at times.

The argument about reinvesting capital is fine on a short and medium term time frame, but it becomes problematic if someone is selling down their assets to fund their retirement. For this group, there's a choice between taking duration risk or credit risk to get additional yield. There's no free lunch, central banks are determined to forced people to spend their savings and will punish them with negative real interest rates to make it happen.

This comes back to the underlying point of the article. Central bank policy is badly wrong. The speculation on these bonds and other volatile assets is merely one impact of it. Eventually (perhaps decades away) people will realise that more of the drug makes the situation worse and decide to stop taking it. When that happens, there will be substantial changes in many asset prices, not just long tenor government bonds.

Thanks again for the detailed response.

 

Leave a Comment:

RELATED ARTICLES

Hedge funds seizing ships – what next?

Inflation? Nothing (much) to see here

One last hurrah for the 60/40 portfolio?

banner

Most viewed in recent weeks

Raising the GST to 15%

Treasurer Jim Chalmers aims to tackle tax reform but faces challenges. Previous reviews struggled due to political sensitivities, highlighting the need for comprehensive and politically feasible change.

Here's what should replace the $3 million super tax

With Div. 296 looming, is there a smarter way to tax superannuation? This proposes a fairer, income-linked alternative that respects compounding, ensures predictability, and avoids taxing unrealised capital gains. 

100 Aussies: seven charts on who earns, pays, and owns

The Labor government is talking up tax reform to lift Australia’s ailing economic growth. Before any changes are made, it’s important to know who pays tax, who owns assets, and how much people have in their super for retirement.

The rubbery numbers behind super tax concessions

In selling the super tax, Labor has repeated Treasury claims of there being $50 billion in super tax concessions annually, mostly flowing to high-income earners. This figure is vastly overstated.

9 winning investment strategies

There are many ways to invest in stocks, but some strategies are more effective than others. Here are nine tried and tested investment approaches - choosing one of these can improve your chances of reaching your financial goals.

With markets near record highs, here's what you should do with your portfolio

Markets have weathered geopolitical turmoil, hitting near record highs. Investors face tough decisions on valuations, asset concentration, and strategic portfolio rebalancing for risk control and future returns.

Latest Updates

Taxation

100 Aussies: seven charts on who earns, pays, and owns

The Labor government is talking up tax reform to lift Australia’s ailing economic growth. Before any changes are made, it’s important to know who pays tax, who owns assets, and how much people have in their super for retirement.

7 key charts on the state of the Australian property market

The Australian property market stirs fierce debate - often bullish optimism versus crash predictions. But beyond the noise, seven charts reveal what's really driving prices and the outlook for residential real estate.

A simple alternative to the $3 million super tax

Division 296 aims to introduce improved fairness into the superannuation system, yet is overly complex. This scours the world for better ideas and suggests a simpler alternative which can achieve the same goals.

CBA and the index conundrum for super funds

After the hyperbolic rise in CBA shares, super funds are floating the idea of carving out the weightings of ASX bank securities and indexing them within their portfolios. This looks at why that might be a big error.

Strategy

10 policies to drive Australian productivity higher

Here's a comprehensive list of proposed reforms to fix Australia's stagnating economy, including introducing a flat income tax rate, reducing migration, and making childcare tax-deductible.

Interviews

Where to find big winners in Asia

As more money looks for a home outside the US, Asia may soon get some love. Fidelity's Anthony Srom outlines the best places in Asia to invest, including in Chinese consumer names, Indian financials, and Thailand.

Investment strategies

We have trouble understanding the time value of money

We overvalue the present and underestimate the future - it’s a cognitive glitch called hyperbolic discounting. It affects savings, spending, and loans, and it's more common - and costly - than we think. 

Sponsors

Alliances

© 2025 Morningstar, Inc. All rights reserved.

Disclaimer
The data, research and opinions provided here are for information purposes; are not an offer to buy or sell a security; and are not warranted to be correct, complete or accurate. Morningstar, its affiliates, and third-party content providers are not responsible for any investment decisions, damages or losses resulting from, or related to, the data and analyses or their use. To the extent any content is general advice, it has been prepared for clients of Morningstar Australasia Pty Ltd (ABN: 95 090 665 544, AFSL: 240892), without reference to your financial objectives, situation or needs. For more information refer to our Financial Services Guide. You should consider the advice in light of these matters and if applicable, the relevant Product Disclosure Statement before making any decision to invest. Past performance does not necessarily indicate a financial product’s future performance. To obtain advice tailored to your situation, contact a professional financial adviser. Articles are current as at date of publication.
This website contains information and opinions provided by third parties. Inclusion of this information does not necessarily represent Morningstar’s positions, strategies or opinions and should not be considered an endorsement by Morningstar.