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AU-US 10-Year Yield Differential Too Tight

AUSSIE BONDS

Today, the AU-US 10-year cash yield differential is 4bps higher at +7bps following a relatively hawkish speech from RBA Governor Bullock after-market yesterday. The Governor noted that the final stretch of reducing inflation to target will take longer than the initial leg.

  • Additionally, she noted that “the remaining inflation challenge we are dealing with is increasingly homegrown and demand-driven…a more substantial monetary policy tightening is the right response to inflation that results from aggregate demand exceeding the economy’s potential to meet that demand”.
  • At +7bps, the cash AU-US 10-year yield differential currently sits near the middle of the range of +/-30bps which has been observed since November.
  • The underperformance in the ACGB 10-year since early October can be attributed to a 55bp widening in the AU-US 3-month swap rate 1-year forward (1y3m) over that period. The 1y3m differential is a proxy for the expected relative policy path over the next 12 months.
  • However, a simple regression of the AU-US cash 10-year yield differential and the AU-US 1Y3M swap differential over the current tightening cycle indicates that the 10-year yield differential is currently 12bps too low versus its fair value (i.e., +7bp versus +19bp).


Figure 1: AU-US Cash 10-Year Yield Differential (%) Vs. Regression Fair Value (%)




Source: MNI – Market News / Bloomberg

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