If a significant amount of money is missing from your investment account, you should first review your account statements to identify the cause of any loss. All investments have risk and many times there is a simple explanation for a loss of value. However, if a review of your account does not answer your question, it is often best to contact your financial professional for an explanation. In many of these situations, it is also best to get the answer about the loss in writing via email. This will document the explanation for your records and allow you to review it in the future. Many financial investment firms record telephone conversations with investors, but keep in mind that typically these recorded calls protect the financial professional and not the investor. If you still don't get a satifactory answer, it is then often a good idea to contact a lawyer.