Results 71 to 80 of about 30,883 (281)

Comparative Analysis of Artificial Neural Networks and Evolutionary Algorithms in DEA-β-MSV Portfolio Optimization

open access: yesAlgorithms
This paper proposes a hybrid methodology for portfolio optimization by integrating the data envelopment analysis (DEA) model with the mean semivariance (MSV) framework.
Abdelouahed Hamdi   +3 more
doaj   +1 more source

The Role of Price‐Volatility Cojumps in Volatility Forecasting

open access: yesJournal of Futures Markets, EarlyView.
ABSTRACT This paper investigates whether simultaneous jumps in prices and volatility improve volatility forecasting. Using up‐to‐date high‐frequency S&P 500 and VIX data, we identify price‐volatility cojumps at the intraday granularity and construct upside, downside, and asymmetric measures.
Kefu Liao
wiley   +1 more source

Downside Risk and the Momentum Effect [PDF]

open access: yes
Stocks with greater downside risk, which is measured by higher correlations conditional on downside moves of the market, have higher returns. After controlling for the market beta, the size effect and the book-to-market effect, the average rate of return
Andrew Ang, Joseph Chen, Yuhang Xing
core  

Scaling With Bias? The Role of Founders' HR Knowledge and Experience in Hiring and Managerial Appointments

open access: yesHuman Resource Management, EarlyView.
ABSTRACT New ventures are expected to continuously add new jobs and managerial positions to meet the expanding demands of scaling. However, the rapid pace and inherent uncertainty of scaling often lead founders of new ventures to rely on heuristics when making these critical hiring and managerial appointment decisions.
Mohamed Genedy   +3 more
wiley   +1 more source

Climate Transition Risk, ESG Rating Divergence and Portfolio Performance: Evidence From Composite Scores and Climate‐Adjusted Factor Models

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT This study investigates how ESG rating divergences and climate transition risks jointly influence portfolio performance. Using a newly constructed composite Environmental (E) score derived from principal component analysis (PCA) across three leading ESG providers (Eikon, RobecoSAM, Sustainalytics), we build industry‐adjusted portfolios for 389 
Ahmed Bouteska   +2 more
wiley   +1 more source

A systematic method of project selection based on risk and return criteria and according to the mean-semi-deviation behavioral hypothesis [PDF]

open access: yes, 2007
The uncertain problem of Industrial project selection is the topic of discussion in this article. As the unrealistic assumption of certainty is relaxed in this problem, the decision maker is faced with a two-criterion decision model in which justifying ...
Jafarizadeh, Babak, Ramazani, Reza
core  

Risk Aversion and Economic Policy Uncertainty Impacts on Investor Attention: Evidence From International Stock Markets Indices

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT This paper examines the relationship between economic policy uncertainty, risk aversion, and investors' attention for 15 equity indices across Asia, Europe, and North America. Our empirical results indicate that both risk aversion and economic uncertainty significantly increase the Google Search Volume across all equity indices.
Stephanos Papadamou   +2 more
wiley   +1 more source

What Role Do Finance Ministers Play in Political Business Cycles? Evidence‐Based on a New African Dataset

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT This study investigates how the personal characteristics of finance ministers influence political budget cycles in Africa. Using a new dataset covering 300 finance ministers across 23 countries from 1980 to 2020, we find that political budget cycles primarily take the form of increased government consumption during election years.
Christine Olivia Strong
wiley   +1 more source

Mean-semivariance behavior (II): The D-CAPM [PDF]

open access: yes
For over 30 years academics and practitioners have been debating the merits of the CAPM. One of the characteristics of this model is that it measures risk by beta, which follows from an equilibrium in which investors display mean-variance behavior.
Estrada, Javier
core  

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