Vaz de Melo Mendes, Beatriz; Pereira Câmara Leal, Ricardo - In: International Journal of Managerial Finance 1 (2005) 2, pp. 95-106
Purpose – Proposes a new covariance matrix robust estimator able to capture the correct orientation of the data and the large unconditional variance caused by occasional high volatility periods. Design/methodology/approach – Derives easy‐to‐compute estimates for the center and covariance...