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Segmented money markets and covered interest parity arbitrage

Summary:
By Dagfinn Rime, Andreas Schrimpf and Olav Syrstad This paper studies the violation of the most basic no-arbitrage condition in international finance - Covered Interest Parity (CIP). To understand the CIP conundrum, it is key to (i) account for funding frictions in U.S. dollar money markets, and (ii) to study the challenges of swap intermediaries when funding liquidity evolves differently across major currency areas. We find that CIP holds remarkably well for most potential arbitrageurs when applying their marginal funding rates. With severe funding liquidity differences, however, it becomes impossible for dealers to quote prices such that CIP holds across the full rate spectrum. A narrow set of global

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This paper studies the violation of the most basic no-arbitrage condition in international finance - Covered Interest Parity (CIP). To understand the CIP conundrum, it is key to (i) account for funding frictions in U.S. dollar money markets, and (ii) to study the challenges of swap intermediaries when funding liquidity evolves differently across major currency areas. We find that CIP holds remarkably well for most potential arbitrageurs when applying their marginal funding rates. With severe funding liquidity differences, however, it becomes impossible for dealers to quote prices such that CIP holds across the full rate spectrum. A narrow set of global top-tier banks enjoys risk-less arbitrage opportunities as dealers set quotes to avert order flow imbalances. We show how a situation with persistent arbitrage profits arises as an equilibrium outcome due to the constellation of market segmentation, the abundance of excess reserves and their remuneration in central banks' deposit facilities.

JEL classification: E43, F31, G15

Keywords: Covered interest parity, money market segmentation, funding liquidity premia, FX swap market, U.S. dollar funding

International Settlement
The Bank for International Settlements (BIS) is an international company limited by shares owned by central banks which "fosters international monetary and financial cooperation and serves as a bank for central banks". The BIS carries out its work through subcommittees, the secretariats it hosts and through an annual general meeting of all member banks. It also provides banking services, but only to central banks and other international organizations. It is based in Basel, Switzerland, with representative offices in Hong Kong and Mexico City.

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