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AU-NZ 10Y Yield Differential Too Low

AUSSIE BONDS

The AU-NZ 10-year yield differential is -3bps today, now standing at -23bps compared to the recent high of -5bps in late July, which marked the highest level since August 2022.

  • The recent move lower in the 10-year yield differential coincided with a move lower in the AU-NZ 3-month swap rate 1-year forward (1Y3M) spread leading up to the RBA’s August policy meeting.
  • However, this move has reversed following the RBNZ’s decision to cut the OCR by 25bps on August 14, with the AU-NZ 1Y3M spread now approaching cyclical highs.
  • Interestingly, the increase in the 1Y3M spread has not been reflected in the AU-NZ 10-year yield differential.
  • A simple regression of the AU-NZ 10-year yield differential against the AU-NZ 1Y3M spread over the past 12 months suggests that the differential is 16bps below its regression fair value (i.e., -23bps versus -7bps).
  • The 1Y3M differential is a proxy for the expected relative policy path over the next 12 months.


Figure 1: AU-NZ: 10-Year Yield Differential Vs. 1Y3M Swap Differential



Source: MNI – Market News / Bloomberg

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