More specifically we seek to build network models that demonstrate relationships between stocks. As raw data
we use share’s closing prices from the Greek stock market and compute the related interaction between them (cross
correlation). Consequently, by using data mining techniques we create various network models as alternative
presentation of the associated shares. We focus out analysis on two years, a year before the economic crisis and a
year during the crisis, in order to explore if the crisis has affected the interaction of the shares. Techniques from
Social Network Analysis (SNA) will be used in order to draw conclusions regarding the topology and in finding the
most central shares. For this purpose we used the open-source social network analysis software "Gephi" by Bastian
et al. (2009), along with other data management programs.