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Sectoral Corporate Profits and Long-Run Stock Return Volatility in the United States: A GARCH-MIDAS Approach
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-16 DOI: 10.1002/for.3207
Afees Salisu, Kazeem O. Isah, Ahamuefula Ephraim Ogbonna

This study aims to examine the usefulness of corporate profits in predicting the return volatility of sectoral stocks in the United States. We use a GARCH-MIDAS approach to keep the datasets in their original frequencies. The results show a consistently positive slope coefficient across various sectoral stocks. This implies that higher profits lead to increased trading of stocks and, subsequently, a higher volatility in the long run than usual. Furthermore, the analysis also extends to predictability beyond the in-sample. We find strong evidence that corporate profits can predict the out-of-sample long-run return volatility of sectoral stocks in the United States. These findings are significant for investors and portfolio managers.

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引用次数: 0
Modelling and Forecasting of Exchange Rate Pairs Using the Kalman Filter
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-15 DOI: 10.1002/for.3217
Paresh Date, Janeeta Maunthrooa

Developing and employing practically useful and easy to calibrate models for prediction of exchange rates remains a challenging task, especially for highly volatile emerging market currencies. In this paper, we propose a novel approach for joint prediction of correlated exchange rates for two different currencies with respect to the same base currency. For this purpose, we reformulate a generalized version of a bivariate ARMA model into a state space model and use the Kalman filter for estimation and forecasting of the underlying exchange rates as latent variables. With extensive numerical experiments spanning 18 different exchange rates (across both emerging markets, developing and developed economies), we demonstrate that our approach consistently outperforms univariate ARMA models as well as the random walk model in short term out-of-sample prediction for various exchange rate pairs. Our study fills a gap in the empirical finance literature in terms of robust, explainable, accurate, and easy to calibrate models for forecasting correlated exchange rates. The proposed methodology has applications in exchange rate risk management as well as pricing of financial derivatives based on two exchange rates.

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引用次数: 0
Parametric Quantile Autoregressive Conditional Duration Models With Application to Intraday Value-at-Risk Forecasting
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-13 DOI: 10.1002/for.3214
Helton Saulo, Suvra Pal, Rubens Souza, Roberto Vila, Alan Dasilva

The modeling of high-frequency data that qualify financial asset transactions has been an area of relevant interest among statisticians and econometricians—above all, the analysis of time series of financial durations. Autoregressive conditional duration (ACD) models have been the main tool for modeling financial transaction data, where duration is usually defined as the time interval between two successive events. These models are usually specified in terms of a time-varying mean (or median) conditional duration. In this paper, a new extension of ACD models is proposed which is built on the basis of log-symmetric distributions reparametrized by their quantile. The proposed quantile log-symmetric conditional duration autoregressive model allows us to model different percentiles instead of the traditionally used conditional mean (or median) duration. We carry out an in-depth study of theoretical properties and practical issues, such as parameter estimation using maximum likelihood method and diagnostic analysis based on residuals. A detailed Monte Carlo simulation study is also carried out to evaluate the performance of the proposed models and estimation method in retrieving the true parameter values as well as to evaluate a form of residuals. Finally, we derive a semiparametric intraday value-at-risk (IVaR) model and then the proposed models are applied to two price duration data sets.

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引用次数: 0
Temporal Patterns in Migration Flows Evidence from South Sudan
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-11 DOI: 10.1002/for.3209
Thomas Schincariol, Thomas Chadefaux

What explains the variation in migration flows over time and space? Existing work has contributed to a rich understanding of the factors that affect why and when people leave. What is less understood are the dynamics of migration flows over time. Existing work typically focuses on static variables at the country-year level and ignores the temporal dynamics. Are there recurring temporal patterns in migration flows? And can we use these patterns to improve our forecasts of the number of migrants? Here, we introduce new methods to uncover temporal sequences—motifs—in the number of migrants over time and use these motifs for forecasting. By developing a multivariable shape similarity-based model, we show that temporal patterns do exist. Moreover, using these patterns results in better out-of-sample forecasts than a benchmark of statistical and neural networks models. We apply the new method to the case of South Sudan.

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引用次数: 0
Forecasting Chinese Stock Market Volatility With Volatilities in Bond Markets
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-10 DOI: 10.1002/for.3215
Likun Lei, Mengxi He, Yi Zhang, Yaojie Zhang

In this paper, we investigate whether the bond markets contain important information that can improve the accuracy of stock market volatility forecasts in China. We use realized volatility (RV) implemented by different maturity treasury bond futures contracts to predict the Chinese stock market volatility. Our work is based on the heterogeneous autoregressive (HAR) framework. Empirical results show that the volatility of treasury bond contracts with longer maturities (especially 10 years) has the best effect on predicting the Chinese stock market volatility, both in sample and out of sample. Two machine learning methods, the scaled principal component analysis (SPCA) and the least absolute shrinkage and selection operator (lasso), are also more effective than the HAR benchmark model's prediction. Finally, mean–variance investors can achieve substantial economic gains by allocating their investment portfolios based on volatility forecasts after introducing treasury bond futures volatility.

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引用次数: 0
Crowd Flow Prediction: An Integrated Approach Using Dynamic Spatial–Temporal Adaptive Modeling for Pattern Flow Relationships
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-10 DOI: 10.1002/for.3213
Zain Ul Abideen, Xiaodong Sun, Chao Sun

Predicting crowd flows in smart cities poses a significant challenge for the intelligent transportation system (ITS). Traffic management and behavioral analysis are crucial and have garnered considerable attention from researchers. However, accurately and timely predicting crowd flow is difficult due to various complex factors, including dependencies on recent crowd flow and neighboring regions. Existing studies often focus on spatial–temporal dependencies but neglect to model the relationship between crowd flow in distant areas. In our study, we observe that the daily flow of each region remains relatively consistent, and certain regions, despite being far apart, exhibit similar flow patterns, indicating a strong correlation between them. In this paper, we proposed a novel Multiscale Adaptive Graph-Gated Network (MSAGGN) model. The main components of MSAGGN can be divided into three major parts: (1) To capture the parallel periodic learning architecture through a layer-wise gated mechanism, a layer-wise functional approach is employed to modify gated mechanism, establishing parallel skip periodic connections to effectively manage temporal and external factor information at each time interval; (2) a graph convolutional-based adaptive mechanism that effectively captures crowd flow traffic data by considering dynamic spatial–temporal correlations; and (3) we proposed a novel intelligent channel encoder (ICE). The task of this block is to capture citywide spatial–temporal correlation along external factors to preserve correlation for distant regions with external elements. To integrate spatio-temporal flexibility, we introduce the adaptive transformation module. We assessed our model's performance by comparing it with previous state-of-the-art models and conducting experiments using two real-world datasets for evaluation.

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引用次数: 0
Forecasting Equity Premium in the Face of Climate Policy Uncertainty
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-08 DOI: 10.1002/for.3206
Hyder Ali, Salma Naz

This study examines the role of the US climate policy uncertainty (CPU) index in forecasting the equity premium, employing shrinkage methods such as LASSO and elastic net (ENet) to dynamically select predictors from a dataset spanning April 1987 to December 2022. Alongside CPU, other uncertainty predictors like economic policy uncertainty (EPU), geopolitical risk (GPR), and the volatility index (VIX) are considered to assess their complementary roles in out-of-sample (OOS) equity premium forecasting. The results reveal that while CPU alone cannot consistently predict the equity premium, it provides crucial complementary information when combined with other predictors, leading to a statistically significant OOS R2$$ {R}&#x0005E;2 $$ of 1.231%. The relationship between CPU and the equity premium is time varying, with a stronger influence observed during periods of economic downturn or heightened uncertainty, as demonstrated by wavelet coherence analysis. This study also identifies CPU's significant impact on industry-specific returns, particularly in climate-sensitive sectors, offering valuable insights for investment strategies and risk management in an era of increasing CPU.

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引用次数: 0
Economic Forecasting With German Newspaper Articles
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-06 DOI: 10.1002/for.3211
Tino Berger, Simon Wintter

We introduce a new leading indicator for the German business cycle based on the content of newspaper articles from the Süddeutsche Zeitung. We use the rapidly evolving technique of Natural Language Processing (NLP) to transform the content of daily newspaper articles between 1992 and 2021 into topic time series using an LDA model. These topic time series reflect broad areas of the German economy since 1992, in particular the recession phases of the High-Tech Crisis, the Great Financial Crisis and the Covid-19 pandemic. We use the Newspaper Indicator in a Probit model to demonstrate that our data can be considered as a new leading indicator for predicting recession periods in Germany. Moreover, we show in an out-of-sample forecast experiment that our newspaper data have a predictive power for the German business cycle across 12 target variables that is as strong as established survey indicators. Industrial Production, the Stock Market Index DAX, and the Consumer Price Index for Germany can even be predicted out-of-sample more accurately with our newspaper data than with survey indices of the Ifo Institute and the OECD.

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引用次数: 0
Forecasting Beta Using Ultra High Frequency Data
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-11-05 DOI: 10.1002/for.3204
Jian Zhou

This paper examines if using ultra high frequency (UHF, e.g., tick-by-tick) data could improve the accuracy of beta forecasts compared with using only moderately high frequency (MHF, minute-level) data. We propose a novel two-step paired t-test for performance evaluation. Our test exploits the cross-sectional variations in the beta forecasts and avoids the issues associated with the traditional approach which requires choosing a proxy for the true beta. Our tests provide strong evidence that using UHF data generally yields more accurate beta forecasts than using MHF data. Furthermore, we show that the UHF estimator consistently belongs to the group of best risk-hedging performers for portfolios constructed based on both industrial classifications and size and book-to-market ratios. However, we also find that using UHF data of a coarser scale (e.g., 5 or 15 s) leads to reduced benefits compared with using tick-by-tick data. Our conclusions hold when different UHF estimators and sample periods are used.

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引用次数: 0
Robust Estimation of Multivariate Time Series Data Based on Reduced Rank Model
IF 3.4 3区 经济学 Q1 ECONOMICS Pub Date : 2024-10-25 DOI: 10.1002/for.3205
Tengteng Xu, Ping Deng, Riquan Zhang, Weihua Zhao

Multivariate time series analysis uncovers the intricate relationships among multiple variables, which plays a vital role in areas such as policy-making and business decision-making. This paper employs a reduced rank regression model to investigate a robust estimation method for multivariate time series data using an 1$$ {ell}_1 $$ penalty. The goal is to achieve rapid parameter estimation while ensuring robustness in the analysis of time series data. This study provides a detailed description of the solution process and examines the theoretical properties of the proposed method. To evaluate its effectiveness, the proposed model is compared with full-rank regression and the multivariate regression with covariance estimation (MRCE) method through simulations, as well as an analysis of the Sceaux household electric power consumption data. The results indicate that the proposed model performs well.

多元时间序列分析揭示了多个变量之间错综复杂的关系,在政策制定和商业决策等领域发挥着重要作用。本文采用还原秩回归模型,研究了一种使用 ℓ 1 $$ {ell}_1 $$ 惩罚的多变量时间序列数据稳健估计方法。其目的是实现快速参数估计,同时确保时间序列数据分析的稳健性。本研究详细描述了求解过程,并检验了所提方法的理论特性。为了评估其有效性,本研究通过模拟以及对斯考家庭电力消费数据的分析,将所提出的模型与全秩回归法和带协方差估计的多元回归法(MRCE)进行了比较。结果表明,建议的模型性能良好。
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Journal of Forecasting
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