Varmaz, Armin; Fieberg, Christian; Poddig, Thorsten - In: Annals of Operations Research 341 (2024) 2, pp. 1151-1176
In mean-variance portfolio optimization, multi-index models often accelerate computation, reduce input requirements, facilitate understanding, and allow easy adjustment to changing conditions more effectively than full covariance matrix estimation in many situations. In this paper, we develop a...