Cash ACGBs are 2bps richer today with the AU-US 10-year yield differential at +63bps.
- At this level, the differential sits around its cycle high, the widest since mid-2022.
- December’s price action has consolidated the differential’s breakout above the ±30bps range that had prevailed since November 2022.
- This widening has occurred alongside a steady increase in market-implied expectations for the RBA cash rate.
- However, a simple regression of the 10-year yield differential against the AU–US 1-year forward 3-month swap rate (1Y3M) spread over the past two years suggests the current differential is around 5bps above regression fair value (see chart).
Figure 1: AU-US Cash 10-Year Yield Differential (%)

Bloomberg Finance LP / MNI