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
looking for a stock market simulation that's as close to the real thing as possible
user
many online brokers have a "virtual" or "paper" trading feature to them.  you can make trades in near-real time with a fake account balance and it will treat it as though you were making the trade at that time.  no need to manage the math yourself - plus, you can even do more complicated trades (one-cancels-other/one-triggers-other).
assistant