Nov ARL - Why Are Bond Yields Climbing?

Rising sovereign debt, alongside several supply and inflation pressures, is pushing bond yields higher and could weaken growth through housing, consumption, investment and debt servicing.

• Ten-year government yields have reached 2.83% in Japan, 3.35% in Germany, 4.98% in the United States and 5.28% in the United Kingdom in 2026.
• The author identifies seven drivers of higher yields, including Middle East energy disruptions, attacks on Russian refining capacity, rising sovereign debt, a higher term premium, hyperscaler capex borrowing, weaker bond hedging and insufficient savings relative to investment demand.
• Government debt-to-GDP has risen from 90% to 200% in Japan and from 65% to 135% in the United States over 30 years, while Germany remains near 65%.
• Japan’s yields remain broadly similar to Germany’s despite much higher debt because Japan relies heavily on domestic investors; growth, inflation expectations, savings, central-bank credibility, policy and currency confidence also shape yields.
• A 100-basis-point rise in interest rates is estimated to reduce average OECD GDP growth by about 0.6%, with housing, discretionary consumption, business investment and debt refinancing bearing the impact.
• U.S. yields have risen especially sharply after policymakers allowed debt to grow faster than GDP for more than a decade, raising uncertainty around hyperscalers’ ability to sustain their capex programmes.

Takeaway: Investors should treat sovereign borrowing trends as the central risk behind higher yields and assess the resulting pressure on growth and U.S. hyperscaler capex, while recognising that country-specific funding structures and macroeconomic conditions create wide differences in impact.