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On the Time-varying Effects of the ECB's Asset Purchases

Andrejs Zlobins ()

No 2021/02, Working Papers from Latvijas Banka

Abstract: This paper (re-)evaluates the effectiveness of central bank asset purchases in the euro area given their prominent role in the ECB's response to the pandemic as well as the evidence from the US suggesting diminishing returns of this policy measure over time. We analyse their macroeco- nomic impact in the euro area using a time-varying parameter structural vector autoregression with stochastic volatility and perform identification via sign and zero restrictions of Arias et al. (2018), their fusion with high frequency information approach akin to Jarocinski and Karadi (2020) and a novel method which merges high frequency identification with narrative sign re- strictions of Antolin-Diaz and Rubio-Ramirez (2018). We find that the potency of the ECB's asset purchases to lift inflation has indeed considerably declined over time with several factors contributing to a more muted response of prices to central bank asset purchases. Our results show that the reanchoring channel is no longer active while the counterproductive effects via the mechanism outlined in Boehl et al. (2020), which we dub the capacity utilization channel, have emerged lately and are further complemented with disinflationary effects stemming from the cost channel. Also, the effects passed through more standard transmission channels of central bank asset purchases like portfolio rebalancing and signalling, while still significant, appear to be less persistent recently. Overall, our findings point to a diminishing returns of the ECB's asset purchases to stabilize inflation and its expectations in the euro area.

Keywords: quantitative easing; central bank asset purchases; monetary policy; euro area; non-linearities (search for similar items in EconPapers)
JEL-codes: E50 E52 (search for similar items in EconPapers)
Date: 2021-10-28
New Economics Papers: this item is included in nep-cba, nep-eec, nep-mac, nep-mon and nep-ore
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