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Global bond sell-off deepens, long-term government yields hit multi-decade highs

8/19/2026

Long-term government borrowing costs have climbed to multi-decade highs as a global bond sell-off deepens, with persistent inflation fears and a surge in AI-related debt issuance cited as the primary drivers.

The sell-off has weighed on sovereign bonds across markets. Inflation concerns have kept investors cautious about holding long-duration government debt, pushing prices lower and yields higher.

Artificial intelligence infrastructure spending has separately driven a wave of new corporate bond issuance, adding supply to a market where demand for long-dated paper was already under pressure.

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