Abstract:
The extent to which deviations from covered interest parity can be attributed to transactions costs has been exa ggerated in the economic literature because the swap market in foreig n exchange has been ignored. It is shown that such deviations should be no greater than the lowest of the transactions costs in one of thr ee markets: the swap market or either of the two relevant securities markets. This reconciles the theory with the data, which show spreads of no more than a few basis points. However, the empirical results h ave no direct bearing on the conventional market efficiency hypothesi s. Copyright 1988 by University of Chicago Press.