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Wyświetlanie 1-15 z 342
Tytuł:
“SECURITY THROUGH DIVERSITY”: PORTFOLIO DIVERSIFICATION OF PRIVATE PENSION FUNDS
Autorzy:
Kompa, Krzysztof
Wiśniewski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/453764.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
open pension funds (OFE)
pension system reform
investment strategies
portfolio effectivity
Opis:
The program for pension system reform, launched at the beginning of 1997 in Poland, was called by its authors “Security through Diversity”. This title emphasizes that pension reform, which is designed to guarantee security for the insured, has to combine pay-as-you-go pillar together with mandatory, fully funded pillar as well as voluntary, funded pillar. This paper discusses consequences of the changes implemented in the year 2013 and consequently analyzes the changes in the composition of the pension funds’ portfolio, in particular the prohibition of investing in debt securities issued and guaranteed by the State Treasury.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2014, 15, 1; 50-57
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A bi-objective portfolio optimization with conditional value-at-risk
Autorzy:
Sawik, B.
Powiązania:
https://bibliotekanauki.pl/articles/375981.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
multi-criteria decision making
portfolio optimization
conditional value-at-risk
weighting approach
linear programming
Opis:
This paper presents a bi-objective portfolio model with the expected return as a performance measure and the expected worst-case return as a risk measure. The problems are formulated as a bi-objective linear program. Numerical examples based on 1000, 3500 and 4020 historical daily input data from the Warsaw Stock Exchange are presented and selected computational results are provided. The computational experiments prove that the proposed linear programming approach provides the decision maker with a simple tool for evaluating the relationship between the expected and the worst-case portfolio return.
Źródło:
Decision Making in Manufacturing and Services; 2010, 4, 1-2; 47-69
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Classification of Polish Households Based on a Credit Portfolio and Debt Service Ratio
Autorzy:
Anioła-Mikołajczak, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/429788.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
over-indebtedness
Polish households
debt to income ratio
credit portfolio
cluster analysis
Opis:
The aim of this paper is to show the diversity of Polish households’ financial behavior in terms of debt as well as an identification of households that are characterized by a high debt to income ratio. The article also attempt to assess the debt to income ratio as a measure of households over-indebtedness. To achieve the main objective, the cluster analysis method was used. Based on the households credits portfolio and the level of debt to income ratio, 11 homogeneous groups of households were generated. Five of them were characterized by a high debt to income ratio (>30%), which classify them as overindebted.
Źródło:
Optimum. Economic Studies; 2016, 5(83)
1506-7637
Pojawia się w:
Optimum. Economic Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A condition for asset redundancy in the mean-variance model of portfolio investment
Autorzy:
Juszczuk, Przemysław
Kaliszewski, Ignacy
Miroforidis, Janusz
Podkopaev, Dmitry
Powiązania:
https://bibliotekanauki.pl/articles/2050025.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
modern portfolio theory
Markowitz model
meanvariance portfolio optimization
asset redundancy
problem size
Opis:
The mean-variance approach to portfolio investment exploits the fact that the diversification of investments by combination of different assets in one portfolio allows for reducing the financial risks significantly. The mean-variance model is formulated as a bi-objective optimization problem with linear (expected return) and quadratic (variance) objective functions. Given a set of available assets, the investor searches for a portfolio yielding the most preferred combination of these objectives. Naturally, the search is limited to the set of non-dominated combinations, referred to as the Pareto front. Due to the globalization of financial markets, investors nowadays have access to large numbers of assets. We examine the possibility of reducing the problem size by identifying those assets, whose removal does not affect the resulting Pareto front, thereby not deteriorating the quality of the solution from the investor’s perspective. We found a sufficient condition for asset redundancy, which can be verified before solving the problem. This condition is based on the possibility of reallocating the share of one asset in a portfolio to another asset without deteriorating the objective function values. We also proposed a parametric relaxation of this condition, making it possible to removemore assets for a price of a negligible deterioration of the Pareto front. Computational experiments conducted on five real-world problems have demonstrated that the problem size can be reduced significantly using the proposed approach.
Źródło:
Control and Cybernetics; 2020, 49, 2; 179-191
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A generalization of the Zionts-Wallenius multiple criteria decision making algorithm
Autorzy:
Kaliszewski, I.
Zionts, S.
Powiązania:
https://bibliotekanauki.pl/articles/970490.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
wielokryterialne podejmowanie decyzji
zagadnienie wypukłe
zamiana
selekcja portfela
multiple criteria decision making
convex problems
trade-off
portfolio selection
Opis:
In multicriteria problem solving, much can be learned by observing the decision-making process. Some, if not many, of the theoretical constructs used in some academically-generated models are simply not necessary. Taking this into account, we generalize the Zionts-Wallenius Multiple Criteria Decision Making Algorithm. We generalize the approach so that it can solve general convex problems. We do this by drawing from other methods, and by incorporating what we have learned in our work. To deal with the class of convex problems we face, we broaden the concept of tradeoff, and use global tradeoffs. Theory is developed, and then a method incorporating the theory is presented. A small example is included. We discuss how our development enriches decision-making tools currently available. We discuss applications in finance and technology.
Źródło:
Control and Cybernetics; 2004, 33, 3; 477-500
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A recursive procedure for selecting optimal portfolio according to the MAD model
Autorzy:
Michałowski, W.
Ogryczak, W.
Powiązania:
https://bibliotekanauki.pl/articles/205763.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optymalizacja
programowanie liniowe
downside risk aversion
investment
linear programming
portfolio optimization
quadratic programming
risk management
Opis:
The mathematical model of portfolio optimization is usually represented as a bicriteria optimization problem where a reasonable trade-off between expected rate of return and risk is sought. Im a classical Markowitz model the risk is measured by a variance, thus resulting in a quadratic programming model. As an alternative, the MAD model was proposed where risk is measured by (mean) absolute deviation instead of a variance. The MAD model is computationally attractive, since it is transformed into an easy to solve linear programming program. In this paper we poesent a recursive procedure which allows to identify optimal portfolio of the MAD model depending on investor's downside risk aversion.
Źródło:
Control and Cybernetics; 1999, 28, 4; 725-738
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A reference point approach to bi-objective dynamic portfolio optimization
Autorzy:
Sawik, B.
Powiązania:
https://bibliotekanauki.pl/articles/375931.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
dynamic portfolio
mixed-integer programming
reference point method
bi-objective optimization
value-at-risk
Opis:
The portfolio selection problem presented in this paper is formulated as a bi-objective mixed integer program. The portfolio selection problem considered is based on a dynamic model of investment, in which the investor buys and sells securities in successive investment periods. The problem objective is to dynamically allocate the wealth on different securities to optimize by reference point method the portfolio expected return and the probability that the return is not less than a required level. In computational experiments the dataset of daily quotations from the Warsaw Stock Exchange were used.
Źródło:
Decision Making in Manufacturing and Services; 2009, 3, 1-2; 73-85
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active Management in Polish Domestic Treasury Bond Funds
Autorzy:
Miziołek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/16729010.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
passive investing
bond funds
active share
portfolio concentration
Opis:
Theoretical background: An increase in the interest in passive investing has been one of the most important trends on financial market over the last two decades. However, passive portfolio management is not limited to index funds and passive exchange-traded funds (ETFs). Despite the declared active approach to investing, in practice some active fund managers construct portfolios whose structure is quite similar to the index (usually a fund benchmark). Simultaneously, these funds charge relatively high fees, inadequate to the involvement in the investment process. In order to estimate the scale of this phenomenon, the activity and investment style of actively managed funds are examined. Purpose of the article: The main aim of the paper is to determine the degree of active approach to portfolio management by domestic Treasury bond funds investing in the Polish currency. Specific objectives include examining the relationship between the level of the fund’s active management and the size of the fund (assets under management) as well as the investment portfolio concentration. Research methods: In the quantitative study, the portfolio based measure of management activity, commonly used in the subject literature, was applied (adjusted to the bond fund), i.e. bond-level active share ratio. Moreover, to assess the portfolio concentration of the funds from the research sample, two measures were calculated: concentration ratio (CR5) and Herfindahl–Hirschman Index (HHI). Main findings: The results of the study have proved that a majority of the investigated domestic Treasury bond funds manage their portfolios in an active manner. Additionally, the research has shown that the funds managing larger assets, with a low degree of portfolio concentration, are characterized by relatively lower values of the active share ratio, i.e. their portfolios are relatively passively managed.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2023, 57, 1; 137-153
0459-9586
2449-8513
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adaptacja analizy portfolio na potrzeby rynkowo zorientowanego zarządzania miastem
Adaptation of portfolio analysis for market orientated city management
Autorzy:
Kauf, Sabina
Powiązania:
https://bibliotekanauki.pl/articles/1871399.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Opolski
Tematy:
portfolio analysis
location behavior
analysis and diagnosis ofsituation
analiza portfolio
zarządzanie miastem
analiza i diagnoza sytuacji
Opis:
Artykuł prezentuje adaptację analizy portfolio do diagnozy sytuacji rozwojowej obszarów miejskich. Opracowanie omawia kwestie możliwości adaptacji tej analizy przez zarządzających obszarami miejskimi. Wskazano także ograniczenia w jej wykorzystaniu.
Article presents analysis of locational behavior receivers of the city. It takes problems of capabilities of adaptation of portfolio analysis for purposes of managements city areas. It indicates limitations with their utilization relate.
Źródło:
Studia Miejskie; 2010, 1; 67-75
2543-5302
2082-4793
Pojawia się w:
Studia Miejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
African stock markets’ connectedness: Quantile VAR approach
Autorzy:
Yaya, OlaOluwa
Adenikinju, Olayinka
Olayinka, Hammed A.
Powiązania:
https://bibliotekanauki.pl/articles/36095676.pdf
Data publikacji:
2024
Wydawca:
Fundacja Naukowa Instytut Współczesnych Finansów
Tematy:
Quantile dynamic connectedness
Market phases
Vector autoregression
portfolio management
normal market condition
lower quantile of returns
African stocks markets
Opis:
The present paper investigates African stock markets’ linkages by considering stocks in the continent’s largest economies, specifically Egypt, Kenya, Morocco, Nigeria, South Africa, and Tunisia. Using a dataset that spanned November 25, 2008, to September 18, 2023, the quantile connectedness approach of Chatziantoniou et al. (2021) is employed, and the results unfold these interesting dynamics of African market connectivity: (i) In the bearish market phase, South African stock dominated the entire network, transmitting shocks to the remaining stocks, while Moroccan and Kenyan stocks played similar role mildly. (ii) In the bullish market phase, Nigerian stock dominated the market as a major net transmitter of shock supported by South African and Kenyan stock markets. (iii), The Egyptian and Tunis stock markets are net shock receivers in both the bear and bull market phases. (iv), At the median quantile value, stocks become less riskier and the Kenyan stock market becomes the most vulnerable while Nigerian, Egyptian, and South African stock markets are influenced by other stock markets when markets are calm. (v), Though, African stocks are underperforming, interested portfolio managers will learn from the trading strategies to be adopted to maximize their returns. These findings will benefit portfolio managers, international stakeholders, and regulators.
Źródło:
Modern Finance; 2024, 2, 1; 51-68
2956-7742
Pojawia się w:
Modern Finance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternatywne metody oceny jakości zarządzania portfelem instrumentów dłużnych na przykładzie inwestycji OFE w latach 2001-2012
Alternative assessment methods of bond portfolio management – case of open pension funds in Poland between 2001-2012
Autorzy:
Dziwok, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/590260.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Krzywa dochodowości
Zarządzanie portfelem dłużnych papierów wartościowych
Debt securities portfolio management
Yield curve
Opis:
Na współczesnym rynku finansowym zarządzający portfelem stają przed problemem uzyskania ponadprzeciętnej stopy zwrotu. Globalizacja, skutkująca rosnącą korelacją poszczególnych rynków długu, oferuje coraz mniejsze możliwości dywersyfikacji portfela i skłania do poszukiwania coraz to nowych możliwości inwestycyjnych. W efekcie trudniej obecnie zweryfikować metody zarządzania portfelem oraz jakość działania zarządzających. Celem niniejszego artykułu jest próba oceny umiejętności inwestowania w papiery dłużne Skarbu Państwa zarządzających Otwartymi Funduszami Emerytalnymi w latach 2001-2012. Badanie obejmuje dwa procesy decyzyjne – pierwszy dotyczy poziomu trwałości (duration) portfela przez zarządzających, drugi wyboru pomiędzy papierami o stałym bądź zmiennym dochodzie.
In a global financial world managers face decreasing chance for generating the added value within the investment universe. Modern economies with their currencies and government debts closely linked to one another offer smaller diversification and force investors to search new opportunities. The article outline the essential components of an investment management process with a special focus on value of skills in asset allocation strategies. The imperfect foresight approach understood as an alternative measure of investor’s skills was implemented into debt security portfolio of the Polish Open Pension Funds. The used dataset includes observations from each of 14 funds that has been functioning between 2001 and 2012. The research covers two decision making processes: first, which concerns the structure of the portfolio in a view of time to maturity, second – the allocation between fixed or floating rate investment.
Źródło:
Studia Ekonomiczne; 2015, 221; 22-31
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alternatywne względem ujęcia Markowitza podejście do szacowania stopy zwrotu z portfela
Alternative Formulation of Rate-of-Return Estimation in Comparison with Markowitz Approach
Autorzy:
Stachura, Michał
Wodecka, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/589711.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Analiza portfelowa
Stopa zwrotu akcji
Teoria portfelowa Markowitza
Markowitz portfolio theory
Portfolio analysis
Stock rate of returns
Opis:
In the study, two approaches of rate-of-return estimation are compared. One of them, that predominates in practice and that is called by the authors heterogeneous, refers to a separate rate-of-return estimation for every individual asset, and then to an interpolation of obtained values in order to asses rate of return for any portfolio with priorly given proportions of assets. The heterogeneous approach is based on premises concerning a proper method of rate-of-return estimation for individual assets, and a specific method of interpolating estimates for any portfolio as well. In contrast, the other approach, called homogeneous, refers to uniform treatment of all portfolios without exceptions, which leads to a direct rate-of-return estimation for any portfolio with priorly given proportions of assets. The essence of both approaches and discrepancies between them are illustrated with use of properly chosen examples (arbitrary and empirical). Examples' analysis indicates some advantage of the homogeneous approach over the heterogeneous one.
Źródło:
Studia Ekonomiczne; 2013, 154; 92-101
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analytical method for construction of a fundamental portfolio
Analityczna metoda wyznaczania portfela fundamentalnego
Autorzy:
Kliber, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/582999.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
portfolio analysis
fundamental value
multicriterial choice
fundamental portfolio
analiza portfelowa
wartość fundamentalna
wybór wielokryterialny
portfel fundamentalny
Opis:
The classical models used for the construction of an investment portfolio do not take into account the fundamental values of the companies in question. The model of a fundamental portfolio adds this dimension to the classical criteria of profitability and risk. It is assumed that an investor selects stocks according to their attractiveness measured by some fundamental values of companies. In the paper the authors propose an analytical solution of the optimization problem of constructing a fundamental portfolio and present empirical examples of the calculation of fundamental portfolios of stocks listed on the Warsaw Stock Exchange.
Klasyczne metody wyboru portfela inwestycyjnego nie biorą pod uwagę wartości fundamentalnej spółek. Model portfela fundamentalnego dodaje ten wymiar do klasycznych kryteriów zyskowności i ryzyka. Zakłada się w nim, że inwestor wybiera spółki według ich atrakcyjności inwestycyjnej, mierzonej za pomocą pewnych wskaźników fundamentalnych. W artykule przedstawiono propozycję analitycznego rozwiązania problemu optymalizacyjnego konstrukcji portfela fundamentalnego. Zaprezentowano też przykłady wyznaczania tą metodą portfeli fundamentalnych złożonych z akcji spółek notowanych na Giełdzie Papierów Wartościowych w Warszawie.
Źródło:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2019, 63, 2; 25-36
1899-3192
Pojawia się w:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Extended Translation Service Portfolio in Research Translation
Autorzy:
Klimkowski, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/2231702.pdf
Data publikacji:
2022-10-06
Wydawca:
Komisja Nauk Filologicznych Polskiej Akademii Nauk, Oddział we Wrocławiu
Tematy:
translation as a service
Service-Dominant Logic
translation service portfolio
service customisation
research text translation
Opis:
This article is a proposal to think about translation service portfolio in categories of contemporary service provision. As observed in the recent literature of the field, today’s services rely more and more on customisation, interactivity and relation-building. This article presents examples of opening a standard portfolio to opportunities identified by the translator through direct communication with the client. Benefits and limitations of such portfolio modifications are also discussed. The article is an invitation for the readers to rethink their portfolio strategies in search of competitive market advantages.
Źródło:
Academic Journal of Modern Philology; 2022, 15; 179-188
2299-7164
2353-3218
Pojawia się w:
Academic Journal of Modern Philology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An interactive compromise programming for portfolio investment problem
Autorzy:
Karelkina, Olga
Powiązania:
https://bibliotekanauki.pl/articles/2050029.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
modern portfolio theory
Markowitz model
meanvariance portfolio optimization
interactive multicriteria optimization
parameterized achievement scalarizing functions
Opis:
This paper addresses an approach for solving multicriteria portfolio investment problem. The original Markowitz mean-variance model is formulated as a problem of bi-objective optimization with linear and quadratic objective functions. In the current work, this model is extended by introducing a new objective, reflecting asset properties that are useful for the portfolio allocation process. A method based on parameterized achievement scalarizing function is applied to produce Pareto optimal portfolios. A mathematical programming formulation that allows for solving the problem with conventional optimization methods is presented. In addition, a method of reflecting the decision maker’s preferences by means of changing the weights in the achievement scalarizing functions is introduced. A decision making process is simulated for the three-objective portfolio optimization problem.
Źródło:
Control and Cybernetics; 2020, 49, 2; 193-210
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 342

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