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Supply versus risk in sovereign yields: Evidence from Germany’s 500 billion fiscal shock

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  • Winkler, Sebastian
  • Schiereck, Dirk

Abstract

We study whether the German fiscal announcement of 4 March 2025, which introduced a €500 billion Sondervermögen for infrastructure and a permanent exemption of defense spending above 1 percent of GDP from the debt brake, raises sovereign yields through the supply channel or through sovereign risk repricing. Based on an event study, we observe a cumulative abnormal increase of 10 basis points in the 10-year Bund yield over a three-day event window, with similar shifts across other euro-area sovereigns. Nelson-Siegel factors reveal the strongest adjustment in the curvature component, consistent with expected Bund issuance. Sovereign and corporate CDS premia show limited and statistically fragile changes, suggesting no clear increase in perceived default risk.

Suggested Citation

  • Winkler, Sebastian & Schiereck, Dirk, 2026. "Supply versus risk in sovereign yields: Evidence from Germany’s 500 billion fiscal shock," Finance Research Letters, Elsevier, vol. 91(C).
    • Handle: RePEc:eee:finlet:v:91:y:2026:i:c:s1544612326000267
    DOI: 10.1016/j.frl.2026.109495
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    JEL classification:

    • E62 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Fiscal Policy; Modern Monetary Theory
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • H63 - Public Economics - - National Budget, Deficit, and Debt - - - Debt; Debt Management; Sovereign Debt

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