Integrated Variance Forecasting: Model-Based vs. Reduced-Form
59 Pages Posted: 25 Mar 2010
Date Written: January 12, 2009
Abstract
This paper compares model-based and reduced-form forecasts of financial volatility when high-frequency return data are available. We derived exact formulas for the forecast errors and analyzed the contribution of the "wrong" data modeling and errors in forecast inputs. The comparison is made for "feasible" forecasts, i.e. we assumed that the true data generating process, latent states and parameters are unknown. As an illustration, the same comparison is carried out empirically for spot 5-minute returns of DM/USD exchange rates.
Keywords: volatility forecasting, high-frequency data, reduced-form methods, model misspecification
JEL Classification: C22, C53
Suggested Citation: Suggested Citation
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