Abstract: An data analysis system is provided to allow traders of equities and other financial instruments to keep track of their trading history and to display a trade profile of their trading behavior. Trade results are analyzed by correlating trade transactions records with concurrent market conditions, categorizing the conditions, and appending condition data to the trade transaction record. The results are then displayed to the trader in the form of pivot tables and graphs. Users can access the data analysis system over a global information network, i.e. the Internet, or for a more secure environment, the data analysis system can also reside on a local area network (LAN) or intranet. In addition to collecting trade results for individual traders, data is aggregated based on the trader's organization so management of the firm can determine what strategies offer the best profitability or chance of success for most of the firm's traders.