insider dealing arises where a person possesses inside information and uses that information by acquiring or disposing of, for its own account or for the account of a third party, directly or indirectly, financial instruments to which that information relates. The use of inside information by cancelling or amending an order concerning a financial instrument to which the information relates where the order was placed before the person concerned possessed the inside information, shall also be considered to be insider dealing
Effective implementation of surveillance alerts for insider dealing requires capturing the following trade data:
reference data for insider information
Often surveillance alerts use large price movements as a proxy to identify events driven by inside information. This is however imperfect, as sometimes inside information may not result in a large absolute price movement.
A great account of the largest insider trading investigation in the history of Wall Street.