Abstract
The particular study is the first academic attempt
to review a new financial instrument, the covered warrants, which were listed
for trading in the Athens Exchange within the framework of the recapitalization
of the three systematic Greek banks (Alpha Bank, National Bank of Greece and
Piraeus Bank) in the summer of 2013. In particular, we discuss the basic
characteristics of these instruments and we examine their pricing efficiency
during the fifteen months of their listing. The empirical results suggest that
the Greek warrants market is inefficient as the three listed contracts are
systematically underpriced compared to their theoretical value based on the
historic realized volatility of the underlying shares. Furthermore, a dynamic
delta-hedged warrant portfolio yields significant cumulated gains that exceed
the risk-free rate.