Why Global Bond Yields Are Surging

Episode Summary

Executive Summary: George Cole argues the global bond sell-off is broad-based, orderly, and fundamentally driven—not just a U.S. story. Higher yields reflect a mix of persistent fiscal deficits, rising sovereign supply, AI-related corporate borrowing, resilient growth, and near-term energy shocks that may keep central banks tighter for longer.

Main Topics: Global nature of the bond sell-off (Priority: 5/5): Higher yields are rising across the U.S., Germany, the UK, and Japan, suggesting a synchronized global repricing rather than a single-country problem. Broad-based yield-curve pressure (Priority: 5/5): The move is not confined to the long end: 30-year yields, 10-year yields, and even policy-rate expectations have all moved higher, indicating multiple drivers. Fundamental vs. technical drivers (Priority: 4/5): Despite the sell-off, volatility has remained relatively low, which Cole says argues for fundamental causes such as deficits, inflation, and supply-demand imbalances rather than a temporary technical dislocation. Fiscal deficits and debt supply (Priority: 5/5): Large government deficits and high debt levels are increasing bond supply and raising concerns about the sustainability of higher interest costs. AI capex and private-sector borrowing (Priority: 4/5): Heavy borrowing tied to AI investment is competing with sovereign issuance for savings, adding upward pressure on yields. Energy prices and central bank reaction (Priority: 5/5): Recent spikes in oil and European gas prices are pushing near-term inflation concerns higher, especially in Europe, and may prompt additional central bank tightening. What could lower yields (Priority: 3/5): A sustained decline in energy prices or a slowdown/reversal in the AI investment cycle could relieve bond-market pressure and reduce yields over time.

Key Arguments: The sell-off is global: major benchmark government bond markets in the U.S., Germany, the UK, and Japan are all under pressure, so it cannot be explained by the U.S. alone. The yield move is broad across the curve, from long maturities to policy-rate expectations, which implies a combination of inflation, growth, fiscal, and term-premium factors. Low realized and implied volatility suggests the move is more orderly and fundamentally driven than a purely technical or speculative dislocation. Persistent fiscal deficits and rising debt levels are increasing sovereign supply and pushing investors to demand higher yields. AI-related capex is increasingly debt-financed, creating competition with government borrowing for scarce savings and nudging rates higher. Recent energy-price spikes, especially in Europe, are the main source of the latest volatility and could delay rate cuts or trigger hikes. Treasury buybacks and reduced long-end issuance may affect curve shape or liquidity, but they do not meaningfully change the macro level of yields. Higher rates may persist if nominal growth and inflation remain elevated enough to support them, though fiscal tightening or lower inflation would eventually help bring yields down.

Data Points: U.S. 10-year Treasury yield: over 5% - Used as an example of how elevated yields now look high by recent standards but are closer to historical norms. Time frame of the sell-off: since July - Cole says yields have moved higher in a gradual, orderly way over the period since July. Yield curve tenor mentioned: 30-year, 10-year, and 1- to 2-year policy expectations - Pressure is broad across the curve, not concentrated in one segment. Volatility: relatively low - Both realized and implied volatility have remained low despite the rise in yields. European inflation concern: rising oil prices and European gas prices - These are described as creating a significant headache for the inflation outlook in Europe. AI investment horizon: 6 to 12 months - Commodity strategists expect energy markets may be better supplied within this window, easing inflation pressure. Recorded episode date: Monday, September 14th, 2026 - Metadata provided at the end of the transcript. Long-end issuance example: 30-year bonds - The UK DMO example and U.S. Treasury buybacks are discussed as ways to reduce long-end supply.

Pivotal Quotes: "it is broad-based pressure across a range of different factors" — George Cole: Explaining why the sell-off cannot be pinned on a single market or driver. "it’s going to take a fundamental to beat a fundamental" — George Cole: His core view on what is needed to reverse the rise in yields. "the bond market is watching fiscal events and wants to understand exactly what priorities governments will be giving" — George Cole: On how deficits, defense spending, and budget tradeoffs are shaping yields.

Implications: Investors should expect elevated yields to persist unless inflation and energy prices cool materially. Duration risk remains vulnerable near term, while bonds may regain hedge value only if growth or AI investment expectations weaken.