Showing 1 - 10 of 73
The sum of squared intraday returns provides an unbiased and almost error-free measure of ex-post volatility. In this paper we develop a nonlinear Autoregressive Fractionally Integrated Moving Average (ARFIMA) model for realized volatility, which accommodates level shifts, day-of-the-week...
Persistent link: https://www.econbiz.de/10005137234
We study whether and when parameter-driven time-varying parameter models lead to forecasting gains over observation … alternatives. We also find that GAS models outperform many familiar observation-driven models in terms of forecasting accuracy. The … results point to a class of observation-driven models with comparable forecasting ability to parameter-driven models, but …
Persistent link: https://www.econbiz.de/10009653053
We propose a new approach to deal with structural breaks in time series models. The key contribution is an alternative dynamic stochastic specification for the model parameters which describes potential breaks. After a break new parameter values are generated from a so-called baseline prior...
Persistent link: https://www.econbiz.de/10008838634
This paper develops a novel approach to modeling and forecasting realized volatility (RV) measures based on copula … index futures, we find that the copula-based RV (C-RV) model outperforms conventional forecasting approaches for one …
Persistent link: https://www.econbiz.de/10009293998
This paper documents that factors extracted from a large set of macroeconomic variables bear useful information for predicting monthly US excess stock returns and volatility over the period 1980-2005. Factor-augmented predictive regression models improve upon both benchmark models that only...
Persistent link: https://www.econbiz.de/10008740266
Many seasonal macroeconomic time series are subject to changes in their means and variances over a long time horizon. In this paper we propose a general treatment for the modelling of time-varying features in economic time series. We show that time series models with mean and variance functions...
Persistent link: https://www.econbiz.de/10008838615
investment strategy including transaction costs. Another empirical example refers to forecasting US economic growth over the … business cycle. It suggests that time varying combination schemes may be very useful in business cycle analysis and forecasting …
Persistent link: https://www.econbiz.de/10004964452
for longer horizon volatility forecasts. In this paper we explore the forecasting value of these high fre-quency series in … the intraday volatility measure. For forecasting horizons ranging from one day to one week the most accurate out …
Persistent link: https://www.econbiz.de/10005136957
Recent models for credit risk management make use of Hidden Markov Models (HMMs). The HMMs are used to forecast quantiles of corporate default rates. Little research has been done on the quality of such forecasts if the underlying HMM is potentially mis-specified. In this paper, we focus on...
Persistent link: https://www.econbiz.de/10005136969
We propose new scoring rules based on partial likelihood for assessing the relative out-of-sample predictive accuracy of competing density forecasts over a specific region of interest, such as the left tail in financial risk management. By construction, existing scoring rules based on weighted...
Persistent link: https://www.econbiz.de/10005137187