In this article we deal with the problem of portfolio allocation by enhancing network theory tools. We propose the use of the correlation network dependence structure in constructing some well-known risk-based models in which the estimation of the correlation matrix is a building block in the portfolio optimization. We formulate and solve all these portfolio allocation problems using both the standard approach and the network-based approach. Moreover, in constructing the network-based portfolios we propose the use of three different estimators for the covariance matrix: the sample, the shrinkage toward constant correlation and the depth-based estimators . All the strategies under analysis are implemented on three high-dimensional portfolios having different characteristics. We find that the network-based portfolio consistently performs better and has lower risk compared to the corresponding standard portfolio in an out-of-sample perspective.
Lingua originaleEnglish
pagine (da-a)N/A-N/A
RivistaAnnals of Operations Research
Stato di pubblicazionePubblicato - 2022


  • Interconnectedness
  • Mean-variance
  • Networks dependence
  • Portfolio optimization
  • Smart beta strategies


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