In an NBER working paper, Arvind Krishnamurthy, Stefan Nagel, and Annette Vissing-Jorgensen analyze which components of bond yields were affected by the European Central Bank’s government bond purchasing programs. Given the institutional restrictions on monetary policy in the Euro area, the ECB had to carefully argue why it intervened in the first place. (To many, the case was obvious; the ECB intervention amounted to quasi-fiscal policy. But an intervention with this objective would not...
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