currency swaps to immediately hedge their foreign currency
risk and transform their debt into home currency
liabilities.
Overall, McBrady and Schill find compelling evidence
that the bond issuers in their sample opportunistically
vary their issuance currencies in an attempt to
lower borrowing costs both before and after the costs
of hedging foreign currency risk are taken into account.
With regard to the former, McBrady and Schill identify
potential ‘uncovered currency bargains’ directly in
terms of the UIP relationship established in Eq. (15.2).
Beginning with this equation, they take logs on both
sides and rearrange terms to identify potential deviations
from the UIP in a manner similar to the deviations
from the CIP defined in Eq. (15.5):