Central bank asset purchases and lending: Impact on search frictions

Abstract

We investigate the impact of two central bank policies, asset purchases and asset lending, on the search frictions in the government bond market in Japan. We build a search-theoretic model to explore the impact of a central bank’s securities lending facility (SLF) by introducing a central bank as a lender. We test model predictions using intraday data from an electronic platform for Japanese government bonds. First, we find large-scale asset purchases (LSAPs) increase order imbalance in the repurchase agreement (repo) market. Threshold analysis reveals that asset purchase amounts exceeding 0.18% of the outstanding, which corresponds to 38.98% of our sample, cause a significantly higher imbalance. Second, the SLF has a floor effect on the repo rate by affecting dealers’ choices between the repo market and the SLF. Third, the novel friction measures we test show that LSAPs and the SLF have opposite influences on bargaining power in the repo market.