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We propose a novel dynamic approach to forecast the weights of the global minimum variance portfolio (GMVP). The GMVP weights are the population coefficients of a linear regression of a benchmark return on a vector of return differences. This representation enables us to derive a consistent loss...
Persistent link: https://www.econbiz.de/10012847269
that characterize long-term correlation patterns. We associate such term behavior with low frequency economic variables … improves the empirical fit of equity correlations in the US and correlation forecasts at long horizons. -- Factor models ; Low … frequency volatilities and correlations ; Dynamic conditional correlation ; Spline-GARCH ; Idiosyncratic volatility ; Long …
Persistent link: https://www.econbiz.de/10003821063
We provide a new framework for modeling trends and periodic patterns in high-frequency financial data. Seeking adaptivity to ever-changing market conditions, we enlarge the Fourier flexible form into a richer functional class: both our smooth trend and the seasonality are non-parametrically...
Persistent link: https://www.econbiz.de/10013007161
This note studies robust estimation of the autoregressive (AR) parameter in a nonlinear, nonnegative AR model driven by …
Persistent link: https://www.econbiz.de/10013016613
The primary aim of the paper is to consider the problems and issues raised when the data exhibit time heterogeneity in the context of linear models. Ignoring time heterogeneity will undermine the reliability of inference and will give rise to untrustworthy evidence. Accounting for it using trend...
Persistent link: https://www.econbiz.de/10013313291
estimation of volatility models with breaks as against those of GARCH models without volatility breaks and that the introduction … significant events in GARCH models in volatility estimation of key asset prices. …
Persistent link: https://www.econbiz.de/10011476095
estimation of confidence intervals by means of the residual subsample bootstrap in an empirical application to daily stock …
Persistent link: https://www.econbiz.de/10013081186
We present an estimation and forecasting method, based on a differential evolution MCMC method, for inference in GARCH …-recurrent (change-point) regime specifications. We illustrate the estimation method through simulations and apply it to seven financial …
Persistent link: https://www.econbiz.de/10012956780
This paper proposes an ex post volatility estimator, called mixed interval realized variance (MIRV), that uses high-frequency data to provide measurements robust to the idiosyncratic noise of stock markets caused by market microstructures. The theoretical properties of the new volatility...
Persistent link: https://www.econbiz.de/10012971871
The standard approach for studying the periodic ARMA model with coefficients that vary over the seasons is to express it in a vector form. In this paper we introduce an alternative method which views the periodic formulation as a time varying univariate process and obviates the need for vector...
Persistent link: https://www.econbiz.de/10013056817