Abstract: A method for facilitating a construction of a rank-ordered list of companies based on a theme is provided. The method includes identifying a plurality of companies associated with at least one stock exchange; determining search terms that relate to the theme; and constructing a query based on the search terms. For each company, the query is applied to a first set of company-specific textual sources and documents, in order to determine a textual relevance score, and the query is also applied to a second set of sources that relate to company-specific revenue data, in order to determine a revenue exposure score. The two scores are then combined into a composite score, and the companies are rank-ordered based on the respective composite scores. The rank-ordered list may be used for constructing a thematic investment portfolio.