US 10y ~4.78% (small intraday ease): Long-dated African eurobonds remain duration-exposed

The US 10-year Treasury yield sat around 4. 78% on 8 September 2026, easing roughly 2 basis points intraday from the prior session while remaining materially above year-ago levels. Coverage flagged Middle East developments and oil moves alongside Fed guidance as contemporaneous drivers for risk pricing rather than a sustained shift in the global discount rate. A level of the global risk-free curve near 4. 78% transmits into African credit by raising the discount rate used to value external paper and by lifting dollar funding costs.

That mechanism disproportionately pressures long-dated eurobonds where duration and convexity magnify changes in the US curve: long-tenor Ghana and South Africa eurobonds and long-dated sovereigns in frontier credits will be most sensitive to even modest moves. Issuers with active dollar hedging or upcoming external rollover—regional corporates and sovereigns that hedge interest-rate exposure—face higher hedging costs and a steeper refinancing premium for new issuance as global real yields set the baseline for spread compensation. The small intraday ease should not be read as a relief event; relative moves on the US curve still favour flattening or bear-steepening scenarios that rebalance risk between short and long tenors. Credits with shorter external amortisation schedules or strong access to official liquidity (for example better-capitalised South African local-rate issuers) will carry less refinancing premium than longer-dated, lower-liquidity sovereigns in West Africa.