indebted, at any time, as a result of borrowing money for purchasing securities or borrowing securities for making a short sale, taking into account the suitability of such client. In cases where the client
Wong Wan Rd, Ladyaow, Chatuchak, Bangkok 10900 THAILAND; Tel.: +66 2 942 8777; E-mail: sarayut.r@ku.ac.th * I have been greatly indebted to Gilad Livne and Joanna Horton for their time and suggestions. I