BMO note “versus the stock of longs, due to the UK’s large overhang of long bonds, UK 10s30s still looks relatively too flat: but versus the flow of longs - thanks to the DMO’s cuts to planned long supply - UK 10s30s looks somewhere between about right to perhaps even slightly too steep. To put it another way, the DMO’s decision to cut back long supply has done a lot to prevent UK 10s30s steepening even further.”
- Still, they note that “UK 10s30s remains more than 20bps flatter than implied by a model based on the long bond overhangs and issuance plans of international peers. We believe this is due to some specific factors, which may unwind over time”.
- BMO highlight three levers authorities could pull to keep the UK 10s30s curve flatter:
- “The DMO could again reduce the number of Long gilts it sells”.
- “The BoE could alter its QT programme to end or reduce its sales of Long gilts”.
- “The government could alter the regulatory environment for insurance companies providing pension annuities, which presently incentivises them to replace their gilts with other assets”.
- They conclude by noting that if “both the BoE and the Treasury acted, our international model would lead us to expect UK 10s30s to flatten towards 70bp: still steeper than the US; but flatter than Italy, Spain and France. This would help the UK to reduce its ongoing cost of debt service; and ease its future funding pressures, by maintaining a longer weighted average maturity. Otherwise we would be concerned that UK 10s30s would continue to steepen towards the level currently implied by our international model".