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α: calibrated so average coauthorship-adjusted count equals average raw count
Most short-term interest rates in the euro area are below the European Central Bank deposit facility rate, the rate at which the central bank remunerates banks for excess reserves. This coincided with the start of the Public Sector Purchase Program (PSPP) launched in March 2015. In this paper, we explore empirically the interactions between the PSPP and repo rates. Using proprietary data from PSPP purchases and repo transactions for specific (“special”) securities, we assess the scarcity channel of PSPP and its impact on repo rates. We estimate that purchasing 1% of a bond outstanding is associated with a decline of its repo rate of 0.78 basis points.