Tuesday 17 July 2018 by FIIG Securities kanga Education (basics)

What is the Aussie iTraxx and why should I care about it?

The Aussie iTraxx is a proxy for credit spreads in the Australian market


What is the Aussie iTraxx?

We are often asked “what is the Aussie iTraxx and why should I care about it?”

The simple answer is the Aussie iTraxx is a proxy for credit spreads in the Australian market. It is an index, not unlike the ASX All Ordinaries Index for equities, which provides information on the direction and trend of the market. 

The Aussie iTraxx is composed of five year credit default swaps (CDS) for the 25 most liquid and highly traded investment grade Australian entities in the market. Each of the 25 entities is given equal weighting and must meet the following requirements to be included:

  • The entity has to be listed on the Australian Stock Exchange (ASX) and have a five year CDS
  • All entities must be investment grade by any of the three major rating agencies (S&P, Moody’s and Fitch) that rate them
  • Market makers submit a list of the most liquid traded entities for the previous 12 months to the International Index Company (IIC). IIC then computes final liquidity ranking for each entity and the top 25 become the entities that make up the iTraxx Index.
  • All constituents have equal weighting of no more than 4%
  • No more than five banks can be included in the iTraxx, thus comprising no more than 20% of the total weighting

The “price” of the iTraxx is simply the weighted average basis point (bps) cost of the 25 CDS contracts with each individual CDS acting as a proxy for credit spread on that particular company. Typically speaking, CDS and the actual credit margin on bonds from the same company will move in a similar fashion. The weighted average of all 25 CDS contracts then acts as a proxy for the credit spread of the Australian investment grade credit (or corporate bond) market as a whole.

Importantly, the Aussie iTraxx does not incorporate outright yields – that is, the movement in base interest rates such as the government bond risk free rate, the RBA cash rate or the bank bill swap rate (BBSW). It only looks at the credit spread component that is overlaid or added to the base interest rates or yield curve (see below for further details).

Why should I care about it?

The iTraxx is a source of information. It is similar to the ASX All Ordinaries Index for equity investors. It shows movements and trends and enables bond investors to benchmark changes in their own bonds versus the broader market. It can also be used together with other indices and information sources (such as equity indices, volatility (VIX), interest rates and yield curves) to gauge market sentiment and likely future direction.

While not available to individual investors (unless you want to place a $10m minimum position), the Aussie iTraxx is used by professional investors and fund managers to speculate on the direction of credit spreads and to protect (or insure) against losses. Naturally, the effectiveness of the protection depends on how well the Aussie iTraxx replicates the characteristics of the investor’s physical credit exposure. Professional investors are attracted by the very liquid nature and transparency in pricing.

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How has the Aussie iTraxx performed and how does it move with equities and interest rates?

The following chart plots the Aussie iTraxx and the ASX All Ordinaries Index from January 2007 (i.e. pre-GFC) to date.

Source: Bloomberg
Figure 1

There are a number of important observations:

  1. Pre GFC, the index was consistently around 30bps. This indicates that the average five year credit spread (or cost of borrowing above the benchmark rate such as bank bill swap rate or BBSW) for investment grade issuers in Australia was around 30bps – a margin that most pundits would freely suggest was too low.
  2. During the GFC, when the risk of a banking system collapse was very real and equity markets hit their nadir (March 2009), the Aussie iTraxx reached a peak of 443bps – this time a margin that was clearly too high.
  3. After March 2009, spreads rapidly improved in line with equity markets and settled around 100bps until Greece and the other PIIGS (Portugal, Italy, Ireland, Greece and Spain) raised concerns around European sovereign (and bank) debt levels. Equities again sold off and global credit spreads rose. The Aussie iTraxx followed suit and was characterised by the “risk on” and “risk off” periods that existed for some 18 months.
  4. With the market becoming comfortable around European sovereign debt and US growth, equities again rallied and the Aussie iTraxx tightened to touch a low of 78bps on 18 September 2014.
  5. Since 1 July 2015 until early 2016, the Index widened from 97bps to 157bps triggered by concerns over China.
  6. The spread in 2018 has been gently widening and has averaged 66bps since January and higher for July, averaging 82bps to date.

A clear trend that should have emerged from reading the above is the inverse correlation between credit spreads (as measured by the Aussie iTraxx) and global equities. When equities are falling, credit spreads are increasing and intuitively this makes sense.

There is also a negative correlation between interest rates or more correctly, yield curves and the Aussie iTraxx (representing credit spreads). When equities are falling and credit spreads are widening (typically in times of low growth and/or risk aversion), outright yields or interest rates are falling as the central bank lowers interest rates in an attempt to improve growth. This is not always the case but is a relatively useful rule of thumb.

The chart below plots the Aussie iTraxx and the Australian five year swap rate. Again the inverse relationship is clear to see.

Source: Bloomberg
Figure 2

If we add the two together, as shown in Figure 3 below, we get a proxy for the yield to maturity on five year investment grade corporate bonds in Australia. Note how the two tend to offset each other, particularly in times of significant volatility or movement. 

Source: Bloomberg
Figure 3

The proxy for yield to maturity (yellow line) rose and credit spreads widened during the period of China’s stock market turbulence, meaning existing investment grade bond yields rose, and prices declined. It would have been more expensive for investment grade companies to issue bonds around this time. Since mid 2016, credit spreads have contracted as the iTraxx fell from post China highs of 157bps to 81bps (as of 16 July 2018).

It is important to remember that when fixed rate yields (i.e. the total of the benchmark rate plus credit spread) fall, the price of fixed rate bonds increases. This is a crucial concept to investing and a powerful strategy for protecting your portfolio against falling equity values and even credit exposures.