as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
buy securities at another stock exchange
user
different exchanges sometimes offer different order types, and of course have different trading fees.  but once a trade is finished, it should not matter where it was executed.
assistant