Dear all, Wednesday May 6 2015, 1:00 PM in Aula Bianchi, Scuola Normale Superiore Pisa Massimiliano Caporin Department of Economics and Management "Marco Fanno" - Università di Padova will deliver the seminar "The impact of network connectivity on factor exposures, asset pricing and portfolio diversification" Abstract: The need for understanding the propagation mechanisms behind the recent financial crises lead the increased interest for works associated with asset interconnections. In this framework, network-based methods have been used to infer from data the linkages between institutions. In this paper, we elaborate on this and make a step forward by introducing network linkages into linear factor models. Networks are used to infer the exogenous and contemporaneous links across assets, and impacts on several dimensions: network exposures act as in inflating factor for systematic exposure to common factors with implications for pricing; the power of diversication is reduced by the presence of network connections; in the presence of network links a misspecied traditional linear factor model provides residuals that are correlated and heteroskedastic. We support our claims with an extensive simulation experiment. Joint work with Monica Billio, Roberto Panzica, and Loriana Pelizzon. All interested people are kindly invited. Best, Giacomo -- Giacomo Bormetti Assistant Professor of Financial Mathematics -------------------------- Faculty of Mathematical and Natural Sciences Scuola Normale Superiore Pisa Piazza dei Cavalieri, 7 56126 Pisa - Italy email: giacomo.bormetti@sns.it http://mathfinance.sns.it/index.php/people/41-group-members/51-giacomo-borme... phone: +39 050 509248