Dynamic analysis of competition in marketing: strategic groups in Spanish banking

The analysis of strategic groups has important implications for marketing in order to identify a firm’s competitive position. Aims to analyse the development of the competence in an industry. Hypothesizes that the analysis of strategic groups is only meaningful when it is determined that the groupings obtained are not random events within a particular industry. Uses multivariate statistical tests to determine the stable sub‐periods, the strategic groups, and their dynamic characteristics over the years. Applies this technique to the Spanish banking sector and detects a relative intra‐industrial instability, and a significant change in the number and strategy of the identified groups with the passing of time.