Results 1 to 10 of about 692,083 (345)

Dependent conditional value-at-risk for aggregate risk models [PDF]

open access: yesHeliyon, 2021
Risk measure forecast and model have been developed in order to not only provide better forecast but also preserve its (empirical) property especially coherent property. Whilst the widely used risk measure of Value-at-Risk (VaR) has shown its performance
Bony Parulian Josaphat, Khreshna Syuhada
doaj   +6 more sources

Maximum Varma Entropy Distribution with Conditional Value at Risk Constraints [PDF]

open access: yesEntropy, 2020
It is well known that Markowitz’s mean-variance model is the pioneer portfolio selection model. The mean-variance model assumes that the probability density distribution of returns is normal. However, empirical observations on financial markets show that
Chang Liu, Chuo Chang, Zhe Chang
doaj   +2 more sources

Portfolio Selection Models Based on Interval-Valued Conditional Value-at-Risk (ICVaR) and Case Study on the Data from Stock Markets [PDF]

open access: goldFractal and Fractional, 2022
Risk management is very important for individual investors or companies. There are several ways to measure the risk of investment. Prices of risky assets vary rapidly and randomly due to the complexity of finance market. Random interval is a good tool to
Jinping Zhang, Keming Zhang
doaj   +2 more sources

Robust Conditional Variance Estimation and Value-at-Risk

open access: greenThe Journal of Risk, 2001
A common approach to estimating the conditional volatility of short horizon asset returns is to use an exponentially weighted moving average (EWMA) of squared past returns. The EWMA estimator is based on the maximum likelihood estimator of the variance of the normal distribution, and is thus optimal when returns are conditionally normal. However, there
Richard Harris, Cherif Guermat
openalex   +3 more sources

Conditional Value-at-Risk: Theory and Applications [PDF]

open access: green, 2015
62 pages (without bibliography and appendix), 27 figures, Dissertation presented for the degree of MSc in Operational Research, University of ...
Jakob Kisiala
openalex   +3 more sources

Equity Portfolio Optimization Using Mean-CVaR Method Considering Symmetric and Asymmetric Autoregressive Conditional Heteroscedasticity [PDF]

open access: yesتحقیقات مالی, 2020
Objective: Risk management is one of the most important areas of study in finance, and its vital role in the field has attracted the attention of managers and investors in in various sectors of the industry.
Reza Raei   +2 more
doaj   +1 more source

Energy risk measurement and hedging analysis by nonparametric conditional value at risk model

open access: yesFrontiers in Energy Research, 2022
The accurate measurement and management of energy risk have become important issues of the economic development and energy security for all countries. The existing literature generally adopts the Value at Risk (VaR).
Ling Li, Guopeng Hu
doaj   +1 more source

Individual Investors’ Attention to Left Tail Risk [PDF]

open access: yesJournal of Asset Management and Financing, 2020
Objective: Left tail risk shows the probability of the occurrence of undesirable events. Investors who undergo the left tail risk are likely to experience considerable negative returns since the left tail risk oftentimes continues to the next period ...
Mahshid Shahrzadi, Daryoosh Forooghi
doaj   +1 more source

Risk-Sensitive Safety Analysis Using Conditional Value-at-Risk [PDF]

open access: yesIEEE Transactions on Automatic Control, 2022
This paper develops a safety analysis method for stochastic systems that is sensitive to the possibility and severity of rare harmful outcomes. We define risk-sensitive safe sets as sub-level sets of the solution to a non-standard optimal control problem, where a random maximum cost is assessed via Conditional Value-at-Risk (CVaR).
Margaret P. Chapman   +5 more
openaire   +2 more sources

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