The nominal bond yields for advanced economies rose sharply during the first quarter of the year. This note analyzes the drivers of this increase across the jurisdictions and tenors of the yield curve. A key investor focus, in particular, has been the rise in the nominal bond yields in the United States, which has had notable global financial stability spillovers. The analysis indicates that the rise in inflation expectations is the primary driver of the rise in US nominal bond yields over the near term, whereas, the rise in real yields has been the major contributor to the rise in longer-term yields. The change in term premiums has also played a key role in driving both the longer-term inflation breakeven and real yields. Considering other major advanced economies, while inflation expectations have risen across the board in the near term, change in real yields appear more pertinent a driver for shifts in longer-term yields.
This paper examines ways to summarize the maturity structure of public debts using a small number of parameters. We compile a novel dataset of all promised future payments for US and UK government debt from every month since 1869, and more recently for Peru, Poland, Egypt, and Nigeria. We show that there is a unique parametric form which does not arbitrarily restrict debt issuance – portfolios of bonds with exponential coupons. Compared to the most popular alternative, this form 1) more accurately describes changes in debt maturity for these six countries and 2) gives a quite different interpretation of historical debt maturity. Our work can be applied not just to analyze past debt movements, but – because parameter estimates are relatively similar across countries – also for monitoring changes in debt maturity, including in countries where data are partial or incomplete.