From zero to hero: Realized partial (co)variances

Arbeitspapier

This paper proposes a generalization of the class of realized semivariance and semicovariance measures introduced by Barndorff-Nielsen, Kinnebrock and Shephard (2010) and Bollerslev, Li, Patton and Quaedvlieg (2020a) to allow for a finer decomposition of realized (co)variances. The new "realized partial (co)variances" allow for multiple thresholds with various locations, rather than the single fixed threshold of zero used in semi (co)variances. We adopt methods from machine learning to choose the thresholds to maximize the out-ofsample forecast performance of time series models based on realized partial (co)variances. We find that in low dimensional settings it is hard, but not impossible, to improve upon the simple fixed threshold of zero. In large dimensions, however, the zero threshold embedded in realized semi covariances emerges as a robust choice.

Angaben zum Objekt

• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Series: Texto para discussão ; No. 672

Klassifikation und Themen

• Klassifikation: Wirtschaft ; Single Equation Models; Single Variables: Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes ; Model Construction and Estimation ; Forecasting Models; Simulation Methods ; Financial Econometrics
• Thema: High-frequency data ; realized variation ; volatility forecasting

Beteiligte, Orts- und Zeitangaben

• Ereignis: Geistige Schöpfung
• (wer): Bollerslev, Tim ; Medeiros, Marcelo C. ; Patton, Andrew J. ; Quaedvlieg, Rogier
• Ereignis: Veröffentlichung
• (wer): Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Departamento de Economia
• (wo): Rio de Janeiro
• (wann): 2021

Weitere Informationen

• Handle: http://hdl.handle.net/10419/249720
• Letzte Aktualisierung: 10.03.2025, 11:42 MEZ