Download This PaperThe Impact of Network Connectivity on Factor Exposures, Asset Pricing and Portfolio Diversification
63 Pages Posted: 13 Feb 2017
Date Written: December 1, 2016
Abstract
This paper extends the classic factor-based asset pricing model by including network linkages in linear factor models. We assume that the network linkages are exogenously provided. This extension of the model allows a better understanding of the causes of systematic risk and shows that (i) network exposures act as an inflating factor for systematic exposure to common factors and (ii) the power of diversification is reduced by the presence of network connections. Moreover, we show that in the presence of network links a misspecified traditional linear factor model presents residuals that are correlated and heteroskedastic. We support our claims with an extensive simulation experiment.
Keywords: CAPM, volatility, network, interconnections, systematic risk
JEL Classification: G10, G12, F35, C58
Suggested Citation: Suggested Citation
Ca Foscari University of Venice - Dipartimento di Economia ( email )
Cannaregio 873
Venice, 30121
Italy
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Leibniz Institute for Financial Research SAFE ( email )
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Ca Foscari University of Venice - Dipartimento di Economia ( email )
Cannaregio 873
Venice, 30121
Italy