Covered Interest Arbitrage and Market Turbulence: An Empirical Analysis

Mark Taylor

No 236, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: The covered interest parity (CIP) theorem states that the covered interest differential between two similar assets denominated in different currencies should be zero. This paper utilizes high-quality data recorded by the dealers at the Bank of England to test CIP during periods in which news is known to have introduced turbulence into the market, as well as during a relatively calm, control period. The data is high-frequency and allowance is made for the bid-offer spread, brokerage costs and other considerations. The analysis suggests three important conclusions. First, profitable arbitrage opportunities do occasionally occur and sometimes persist during turbulent periods. Second, the degree of efficiency of the markets we study appears to have increased over time. Third, there appears to be a 'maturity effect' whereby the existence, size and persistence of profitable arbitrage opportunities appear to be a positive function of the length of maturity. We propose an explanation of this phenomenon in terms of the existence of credit limits.

Keywords: Arbitrage; Asset Markets; Covered Interest Parity; Exchange Rates; International Capital Market; Market Efficiency (search for similar items in EconPapers)
Date: 1988-03
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