volume geographical location of main readership type of publication such as general daily newspaper or specialist weekly trade magazine are added to the database manually such a categorization allows to classifying and weighting the importance of articles by publication categorization of event classes and event parameters 102 in fig1 and entire fig3 given the data of historical events and corresponding press coverage and prices movements of financial instruments gathered in process 101 with a subsequent process 102 one can categorize the events the events of interest are related to a period of abnormal return of a financial instrument stock price gain or loss driven primarily by the impact of the event rather than normal business operations conditions in a first sub process 301 one can identify the abnormal return of a financial instrument by various filtering approaches e g filtering the returns above a certain value either in absolute terms or relative to a peer group basket index in a following sub process 302 the media coverage related to the abnormal return is being processed media coverage published at the time of the abnormal return is filtered for relevance to the abnormal return for example using filter criteria such as publication date and key word search of the object company experiencing the abnormal return in a following sub process 303 the event as covered in the media causing the abnormal return is identified and categorized into classes e g in accordance with a manual or automatic assessment of risk examples of such events are but are not limited to government probes product safety product approvals.