Results 11 to 20 of about 423,008 (325)

Portfolio selection using R [PDF]

open access: yesYugoslav Journal of Operations Research, 2020
In this paper, we consider the Markowitz mean-variance model to minimize the risk on two assets and develop the program in R software to improve the performance of the model for two real stocks data with various combinations of the portfolios.
Mishra Rohan, Ram Bhagwat
doaj   +1 more source

Portfolio Selection under Systemic Risk [PDF]

open access: yesJournal of Money, Credit and Banking, 2020
AbstractThis paper proposes a modified Sharpe ratio to construct optimal portfolios under systemic events. The portfolio allocation problem is solved analytically under the absence of short‐selling restrictions and numerically when short‐selling restrictions are imposed.
WEIDONG LIN   +2 more
openaire   +3 more sources

A Fuzzy Goal Programming Model for Efficient Portfolio Selection. [PDF]

open access: yesJournal of Optimization in Industrial Engineering, 2017
This paper considers a multi-objective portfolio selection problem imposed by gaining of portfolio, divided yield and risk control in an ambiguous investment environment, in which the return and risk are characterized by probabilistic numbers.
Abolfazl Kazemi   +2 more
doaj   +1 more source

On Imposing ESG Constraints of Portfolio Selection for Sustainable Investment and Comparing the Efficient Frontiers in the Weight Space

open access: yesSAGE Open, 2020
Sustainable investment is typically fulfilled by screening of environmental, social, and governance (ESG); the screening strategies are practical and expedite sustainable-investment development.
Yue Qi, Xiaolin Li
doaj   +1 more source

ChatGPT-Based Investment Portfolio Selection

open access: yesOperations Research Forum, 2023
Abstract In this paper, we explore potential uses of generative AI models, such as ChatGPT, for investment portfolio selection. Trusting investment advice from Generative Pre-Trained Transformer (GPT) models is a challenge due to model "hallucinations", necessitating careful verification and validation of the output.
Romanko, Oleksandr   +2 more
openaire   +3 more sources

Constrained Dynamic Mean-Variance Portfolio Selection in Continuous-Time

open access: yesAlgorithms, 2021
This paper revisits the dynamic MV portfolio selection problem with cone constraints in continuous-time. We first reformulate our constrained MV portfolio selection model into a special constrained LQ optimal control model and develop the optimal ...
Weiping Wu   +3 more
doaj   +1 more source

Application of fuzzy logic in portfolio management: evidence from Iranian researches [PDF]

open access: yesJournal of Fuzzy Extension and Applications, 2020
Over the past decades, financial researchers have proposed different methods in portfolio selection, so that, Markwotiz [1] introduced risk and return criteria for a portfolio selection.
Meysam Kaviani, Seyed Fakhrehosseini
doaj   +1 more source

Stock Portfolio Optimization Using a Combined Approach of Relative Robust Risk Parity [PDF]

open access: yesIranian Journal of Finance, 2021
Risk parity is perceived as one of the stock portfolio selection models that have received a lot of attention since the US financial crisis in 2008. The philosophy of this model is to allocate the same amount of portfolio risk between the constituent ...
Sayed Mohammad Ebrahim Mirmohammadi   +3 more
doaj   +1 more source

Portfolio selection using neural networks [PDF]

open access: yes, 2005
In this paper we apply a heuristic method based on artificial neural networks in order to trace out the efficient frontier associated to the portfolio selection problem.
Alberto Fernández   +11 more
core   +1 more source

A methodology for strategy-oriented project portfolio selection taking dynamic synergy into considerations

open access: yesAlexandria Engineering Journal, 2022
The selection of an optimal project portfolio from multiple project proposals to implement management strategy is always a challenge task for project managers, especially, in the selection of large-scale and complicated projects.
Libiao Bai, Jieyu Bai, Min An
doaj   +1 more source

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