Dynamics of investor spanning trees around dot-com bubble

• DOI: 10.1371/journal.pone.0198807
• Publication Date: 2018-06-13T13:33:11Z
• Authors: Sindhuja Ranganathan; Mikko Kivelä; Juho Kanniainen
• Keywords: Economic bubble; Stock (firearms); Tree (set theory); Econophysics

We identify temporal investor networks for Nokia stock by constructing from correlations between investor-specific net-volumes and analyze changes in the around dot-com bubble. conduct analysis separately households, non-financial institutions, financial institutions. Our results indicate that spanning tree measures households reflected boom crisis: maximum had clear upward tendency bull markets when bubble was building up, and, even more importantly, minimum pre-reacted burst of At same time, we find less reactions minimal maximal trees institutions bubble, which suggest household investors can have a greater herding bubbles.