Swap spreads benchmarks

Figure 8.2 shows the Bloomberg YAS page for Tesco bond SVi% 2019, as at October 9, 2014. The bond has a price of 109.345 and yield to maturity of 3.46%. On the date, the yield spread over a government bond benchmark UK 41 % Treasury 2019 is 200 basis points. The G-spread over an interpolated government bond is 181.5 basis points. Conventionally, the difference between these two spreads is narrow. We see also that the asset-swap spread is 173.6 basis points and Z-spread is 166.3 basis points. 

That said, there are two reasons why the performance of German swap spreads are related to Euro peripheral spreads. The first one is that, flows apart, the bond-swap spread reflects the yield difference between a government rate and the composition of a string of EURI-BOR rates (i.e., a swap fixed rate). As the average credit quality of the banks in the EURIBOR panel is A-AA, any increase in the investors preference for credit quality will make both swap and peripheral spreads widen versus the core Euro government rate, thus increasing the correlation between both differentials. Yet this increase in the correlation will be mainly due to the outperformance of the benchmark asset... 

Given the swap rate, the swap spread can be determined. For example, since this is a 3-year swap, the convention is to use the 3-year rate on the euro benchmark yield curve. If the yield on that issue is 4.5875%, the swap spread is 40 basis points (4.9875% - 4.5875%). 

As we have seen, interest rate swaps are valued using no-arbitrage relationships relative to instruments (funding or investment vehicles) that produce the same cash flows under the same circumstances. Earlier we provided two interpretations of a swap (1) a package of futures/forward contracts and (2) a package of cash market instruments. The swap spread is defined as the difference between the swap s fixed rate and the rate on the Euro Benchmark Yield curve whose maturity matches the swap s tenor. 

Naturally, this presupposes the reference rate used for the floating-rate cash flows is EURIBOR. Furthermore, part of swap spread is attributable simply to the fact that EURIBOR for a given maturity is higher than the rate on a comparable maturity benchmark government. 

The first section describes the motivation for using the swap term structure as a benchmark for pricing and hedging fixed-income securities. The second section examines the factors that affect swap spreads and swap market flows. The third section describes a swap term structure derivation technique designed to mark to market fixed-income products. Finally, different aspects of the derived term structure are discussed. 

Swap rates (frequently quoted as government bond yield for a chosen benchmark adjusted for swap spreads)... 

Swap spreads are quoted off specific government benchmarks. When a benchmark issue is replaced, it can have a technical effect on swap spreads. Swap spreads can either narrow or widen, depending on the new benchmark issue used and the shape of the yield curve. The change is only technical, however, and absolute swap rate levels remain unchanged. 

First, as mentioned earlier, there is usually no universal benchmark in a given market. Again, a possible approach, used in Barra s models, is to introduce a swap spread factor that describes the average spread between sovereign and swap rates and can conveniently allow spread risk to be expressed with respect to the LIBOR/swap curve when interest rate risk factors are originally based on the sovereign yield curve. 

There are several different measures of spread the two most common ones are spread to benchmark and asset swap spread/margin (ASM). The former is the difference in the yields of a bond and its corre-... 

In this example, the bank is quoting an offer rate of 5-25 percent, which is what the fixed-rate payer will pay, and a bid rate of 5-19 percent, which is what the floating-rate payer will receive. The bid-offer spread is therefore 6 basis points. The fixed rate is always set at a spread over the government bond yield curve and is often quoted that way. Say the 5-year Treasury is trading at a yield of 4.88 percent. The 5-year swap bid and offer rates in the example are 31 basis points and 37 basis points, respectively, above this yield, and the bank s swap trader could quote the swap rates as a swap spread 37-31. This means that the bank would be willing to enter into a swap in which it paid 31 basis points above the benchmark yield and received LIBOR or one in which it received 37 basis points above the yield curve and paid LIBOR. 

The asset swap spread is equal to the underlying asset s redemption yield spread over the government benchmark, minus the spread on the associated interest rate swap. The latter, which reflects the cost of convert-... 

The minimum interest rate that an investor should require is the yield available in the marketplace on a default-free cash flow. For bonds whose cash flows are denominated in euros, yields on European government securities serve as benchmarks for default-free interest rates. In some European countries, the swap curve serves as a benchmark for pricing spread product (e.g., corporate bonds). For now, we can think of the minimum interest rate that investors require as the yield on a comparable maturity benchmark security. 

A Z-spread can be calculated relative to any benchmark spot rate curve in the same manner. The question arises what does the Z-spread mean when the benchmark is not the euro benchmark spot rate curve (i.e., default-free spot rate curve) This is especially true in Europe where swaps curves are commonly used as a benchmark for pricing. When the government spot rate curve is the benchmark, we indicated that the Z-spread for nongovernment issues captured credit risk, liquidity risk, and any option risks. When the benchmark is the spot rate curve for the issuer, for example, the Z-spread reflects the spread attributable to the issue s liquidity risk and any option risks. Accordingly, when a Z-spread is cited, it must be cited relative to some benchmark spot rate curve. This is essential because it indicates the credit and sector risks that are being considered when the Z-spread is calculated. Vendors of analytical systems such Bloomberg commonly allow the user to select a benchmark. 

In the pre-euro days, traders were usually organized by currency. Now, sector specialization is the rule. For most issues, buy or sell indications are initially indicated on a spread basis. The spread can be either over the swap curve or over a specified government benchmark. A corporate bond issue keeps the same benchmark for its entire life they roll down the curve together. This is in contrast to the United States, where the convention is to quote a corporate bond s spread over the nearest on-the-run (most recently issued) 2-, 5-, 10-, or 30-year maturity Treasury bond. 

The fixed rate is some spread above the benchmark yield curve with the same term to maturity as the swap. In our illustration, suppose that the 10-year benchmark yield is 8.35%. Then the offer price that the dealer would quote to the fixed-rate payer is the 10-year benchmark rate plus 50 basis points versus receiving EURIBOR flat. For the floating-rate payer, the bid price quoted would be EURIBOR flat versus the 10-year benchmark rate plus 40 basis points. The dealer would quote such a swap as 40-50, meaning that the dealer is willing to enter into a swap to receive EURIBOR and pay a fixed rate equal to the 10-year benchmark rate plus 40 basis points and it would be willing to enter into a swap to pay EURIBOR and receive a fixed rate equal to the 10-year benchmark rate plus 50 basis points. 

After assessing a bond with the help of credit analysis, the question arises to what extent the market price of this bond corresponds with the investor s judgement. The market price should compensate the investor for all risks connected with holding the bond. This market price (spread) is often referred to as the return differential between the analysed bond and the benchmark. Frequently, government bonds or the swap rate with matching maturities are used as benchmarks. Another standard reference are bonds of other issuers that are active in the same business field. Since one debt instrument is assessed relative to another debt instrument, this analysis is also called relative value analysis, the basic principles of which are described in this section. 

A bank s swap screen on Bloomberg or Reuters might look something like FIGURE 7.3. The first column represents the length of the swap agreement, the next two are its offer and bid quotes for each maturity, and the last is the current bid spread over the government benchmark bond. 

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