scholarly journals How Many Stocks Are Sufficient for Equity Portfolio Diversification? A Review of the Literature

2021 ◽  
Vol 14 (11) ◽  
pp. 551
Author(s):  
Azra Zaimovic ◽  
Adna Omanovic ◽  
Almira Arnaut-Berilo

Using extensive and comprehensive databases to select a subset of research papers, we aim to critically analyze previous empirical studies to identify certain patterns in determining the optimal number of stocks in well-diversified portfolios in different markets, and to compare how the optimal number of stocks has changed over different periods and how it has been affected by market turmoil such as the Global Financial Crisis (GFC) and the current COVID-19 pandemic. The main methods used are bibliometric analysis and systematic literature review. Evaluating the number of assets which lead to optimal diversification is not an easy task as it is impacted by a huge number of different factors: the way systematic risk is measured, the investment universe (size, asset classes and features of the asset classes), the investor’s characteristics, the change over time of the asset features, the model adopted to measure diversification (i.e., equally weighted versus optimal allocation), the frequency of the data that is being used, together with the time horizon, conditions in the market that the study refers to, etc. Our paper provides additional support for the fact that (1) a generalized optimal number of stocks that constitute a well-diversified portfolio does not exist for whichever market, period or investor. Recent studies further suggest that (2) the size of a well-diversified portfolio is larger today than in the past, (3) this number is lower in emerging markets compared to developed financial markets, (4) the higher the stock correlations with the market, the lower the number of stocks required for a well-diversified portfolio for individual investors, and (5) machine learning methods could potentially improve the investment decision process. Our results could be helpful to private and institutional investors in constructing and managing their portfolios and provide a framework for future research.

2013 ◽  
Vol 64 (3) ◽  
Author(s):  
Mohd Noor Azli Ali Khan ◽  
Noor Azizi Ismail

In this study an attempt is made to provide empirical evidence on the perception of Malaysian preparers and users of corporate annual reports about selected aspects of internet financial reporting (IFR). The perception of preparers and users of corporate annual reports were solicited using a survey mailed questionnaire. The findings of this study suggested three main benefits to companies that engage in IFR are attract foreign investors, promote company wider to the public, and provide wider coverage. The findings also revealed that three main benefits to the users who collect financial information of companies via their website are increases timeliness and efficiency in obtaining financial information, makes investment decision process easier and faster, and provides information for company inexpensively. The outcome of the analysis revealed that three main factors that are perceived as important by responding firms to engage in IFR are enhance corporate image, company teller with the technology development, and competitors in the industry. The findings also suggested three factors that inhibit firms from engaging in IFR are need to keep information update to be of use, required expertise from the company, and concern over security of information. Another important result revealed that global reach and mass communication as the most important advantages from financial reporting on the Internet. Moreover, security problems are the disadvantages of placing financial information on the Internet. Finally, plausible implications of the findings of the study are then presented and areas for future research are also proposed. This study is one of the first empirical studies of the selected aspects of IFR in Malaysia. Taken together, these research outcomes make an incremental contribution to the existing literature by providing useful insights into our knowledge of IFR especially for emerging markets like Malaysia.


2016 ◽  
Vol 8 (1) ◽  
pp. 2-16 ◽  
Author(s):  
Alper Kara ◽  
Aydin Ozkan ◽  
Yener Altunbas

Purpose – Bank securitisation is deemed to have been a major contributing factor to the 2007/2008 financial crises via fuelling credit growth accompanied by lower banks’ credit standards. Yet, prior to the crisis a common view was that securitisation activity makes the financial system more stable as risk was more easily diversified, managed and allocated economy-wide. The purpose of this paper is to review the extant literature to explore the so far generated knowledge on the impact of securitisation on banking risks. In particular, the authors examine the theoretical arguments and empirical studies on securitisation and banking risks before and after the global financial crisis of 2007/2008. Design/methodology/approach – Review and discussion of the literature. Findings – Theoretical literature univocally accentuate the undesirable consequences of securitisation, which may promote retention of riskier loans, undermine banks’ screening and monitoring incentives and enhance banks’ risk appetite. However, empirical evidence does not uniformly support the theoretical conclusions. If banks are securitisation active they lend more to risky borrowers, have less diversified portfolios and hold less capital, retain riskier loans and are aggressive in loan pricing. Others argue that securitisation reduces banks insolvency risk, increases profitability, provides liquidity and leads to greater supply of loans. Mortgage securitisation is an area where there is consistent evidence of bank risk taking via securitisation. Originality/value – The paper identifies open issues for future research.


2020 ◽  
Vol 25 (2) ◽  
pp. 251
Author(s):  
Nyoman Suprasta, Nuryasman MN

: Investment decision making is a complex process that includes analysis of several factors and follows various steps. The purpose of this study is to identify factors that influence investment decision making among potential individual investors in Indonesia. Four behavioral factors can influence investment decision making, namely Financial literacy, financial experience, locus of control and experience regret A set of questionnaires were distributed to 420 individual stock investors to measure their investment decisions. The results of this study indicate that financial literacy, locus of control, and financial experience have a positive relationship with their investment decisions, while the Regret experience has a negative relationship with their investment decisions. This study provides information that can help guide future research and help formulate policy-makers as well as educate on the factors that can influence investors' decisions.


2019 ◽  
Vol 118 (9) ◽  
pp. 154-160
Author(s):  
Dr. Kartikey Koti

The essential idea of this assessment is investigate the social factors affecting particular theorists' decisions making limit at Indian Stock Markets. In the examination coordinated standard of direct is Classified subject to two estimations the first is Heuristic (Decision making) and the resulting one is prospect.. For the assessment coordinated the data used is basic natured which is assembled through a sorted out survey from 100 individual money related authorities based out in Hubli and Dharwad city, Karnataka State in India on an accommodating way. The respondents were both sex and overwhelming part male were 68% . These theorists were having a spot with the age bundle between35-45 which is 38%. These respondents have completed their graduation were around 56%. These respondents had work inclusion of 5 to 10 years which is 45% and the majority of which were used in government portion which is 56%. Their compensation was between 4 to 6 Lakh and were fit for placing assets into business areas. The money related experts were widely masterminded placing assets into different portfolios like 32% in Share market and 20 % in Fixed store. These examiners mode to known various endeavor streets were through News, family and allies.  


Author(s):  
Rakshith K. R. ◽  
Shivakumar . ◽  
Kaushal Sinha ◽  
Vijeth Kumar L. A.

Yoga is an ancient practice with Eastern roots that involves both physical postures (Asanas) and breathing techniques (Pranayamas). Yoga therapy for male sexual problems can effectively be treated through Yoga therapy, particularly with the help of Yoga poses and breathing exercises, Yoga has proven itself highly very effective in the treatment of a number of incurable and sometimes terminable diseases. Then again, Yoga's therapeutic effects are just a spin-off and supplementary. Yoga which has proved to be very effective in the treatment of many impossible and incurable diseases, the therapeutic effect of Yoga is only a by product and incidental. Problems related to sex can very well be handled with Yoga as most often these problems are more related to the mind than body. Either they are caused by lack of confidence or stress or fatigue or fear and very few times some physical cause is there. There is also a cognitive component focusing on meditation and concentration, which aids in achieving the goal of union between the self and the spiritual. Although numerous empirical studies have found a beneficial effect of Yoga on different aspects of physical and psychological functioning, claims of Yoga's beneficial effects on sexuality derive from a rich but no empirical literature. The goal of this article is to review the philosophy and forms of Yoga, to review the no empirical and (limited) empirical literatures linking Yoga with enhanced sexuality, and to propose some future research avenues focusing on Yoga as a treatment for sexual disorder.


Author(s):  
Kelly C. Allison ◽  
Jennifer D. Lundgren

The Diagnostic and Statistical Manual, fifth edition, of the American Psychiatric Association (2013) has designated several disorders under the diagnosis of otherwise specified feeding and eating disorder (OSFED). This chapter evaluates three of these, night eating syndrome (NES), purging disorder (PD), and atypical anorexia nervosa (atypical AN). It also reviews orthorexia nervosa, which has been discussed in the clinical realm as well as the popular press. The history and definition for each is reviewed, relevant theoretical models are presented and compared, and evidence for the usefulness of the models is described. Empirical studies examining the disorders’ independence from other disorders, comorbid psychopathology, and, when available, medical comorbidities, are discussed. Distress and impairment in functioning seem comparable between at least three of these emerging disorders and threshold eating disorders. Finally, remaining questions for future research are summarized.


2021 ◽  
pp. 104420732110275
Author(s):  
Alex Nester Jiya ◽  
Maxwell Peprah Opoku ◽  
William Nketsia ◽  
Joslin Alexei Dogbe ◽  
Josephine Nkrumah Adusei

Deplorable living conditions among persons with disabilities and the need to improve their living conditions cannot be overemphasized. This has triggered international discussion on the need for deliberate social policies to bridge the poverty gap between persons with and without disabilities. In Malawi, expansion of financial services has been identified as an essential tool to accelerate economic and inclusive development. However, empirical studies are yet to explore the preparedness of financial institutions to extend their services to persons with disabilities. In this qualitative study, semi-structured interviews were conducted with managers from commercial banks in Malawi to understand their perspectives on extending financial services to persons with disabilities. Interviews were transcribed verbatim and a descriptive thematic analysis was performed. Although participants reiterated the need to provide persons with disabilities with financial services to improve their well-being, few initiatives have been undertaken to improve their participation. Particularly, participants stated that barriers, such as a lack of financial literacy and adaptive technologies, communication barriers, and high rates of unemployment, explained the reluctance of commercial banks to extend financial services to persons with disabilities. The limitations, recommendations for future research, and implications of the study for policymaking have been highlighted.


2021 ◽  
pp. 019394592110089
Author(s):  
Jee Young Joo ◽  
Megan F. Liu

This scoping review aimed to examine telehealth-assisted case management for chronic illnesses and assess its overall impact on health care delivery. Guided by the PRISMA statement, this review included 36 empirical studies published between 2011 and 2020. This study identified three weaknesses and four strengths of telehealth-assisted case management. While the weaknesses were negative feelings about telehealth, challenges faced by patients in learning and using telehealth devices, and increased workload for case managers, the strengths included efficient and timely care, increased access to health care services, support for patients’ satisfaction, and cost savings. Future research can be designed and conducted for overcoming the weaknesses of telehealth-assisted case management. Additionally, the strengths identified by this review need to be translated from research into case management practice for chronic illness care. This review not only describes the value of such care strategy, but also provides implications for future nursing practice and research.


2021 ◽  
pp. 009164712110219
Author(s):  
T. Ryan Byerly ◽  
Keith J. Edwards ◽  
Peter C. Hill

Researchers in several academic disciplines have begun to take an interest in group character traits, including the character traits of religious congregations. This article reports the first empirical studies of congregational virtues. The Congregational Character Questionnaire was developed for measuring 12 different virtues of Christian churches: clinging to apostolic teaching, honoring teachers, prayerfulness, hopefulness, discipleship, emotional supportiveness, material supportiveness, spiritual equality, unity, submission, peace with the world, and spreading the faith. The instrument was then used with an online sample ( N = 530) to study how congregants’ perceptions of their congregation’s virtuousness related to congregants’ evaluations of their congregation, participation in their congregation, as well as congregants’ satisfaction with life, presence of meaning in life, and religious well-being. Results indicated that congregants’ overall perceptions of congregational virtuousness were significantly positively related to all of these dependent variables. These results help to reveal the important role that congregational character may play in the experience of congregants. Directions for future research in this area are outlined.


Author(s):  
Andrea Wöhr ◽  
Marius Wuketich

AbstractIt is generally assumed that gamblers, and particularly people with gambling problems (PG), are affected by negative perception and stigmatisation. However, a systematic review of empirical studies investigating the perception of gamblers has not yet been carried out. This article therefore summarises empirical evidence on the perception of gamblers and provides directions for future research. A systematic literature review based on the relevant guidelines was carried out searching three databases. The databases Scopus, PubMed and BASE were used to cover social scientific knowledge, medical-psychological knowledge and grey literature. A total of 48 studies from 37 literature references was found. The perspective in these studies varies: Several studies focus on the perception of gamblers by the general population, by subpopulations (e. g. students or social workers), or by gamblers on themselves. The perspective on recreational gamblers is hardly an issue. A strong focus on persons with gambling problems is symptomatic of the gambling discourse. The analysis of the studies shows that gambling problems are thought to be rather concealable, whereas the negative effects on the concerned persons‘ lives are rated to be quite substantial. PG are described as “irresponsible” and “greedy” while they perceive themselves as “stupid” or “weak”. Only few examples of open discrimination are mentioned. Several studies however put emphasis on the stereotypical way in which PG are portrayed in the media, thus contributing to stigmatisation. Knowledge gaps include insights from longitudinal studies, the influence of respondents‘ age, culture and sex on their views, the relevance of the type of gambling a person is addicted to, and others. Further studies in these fields are needed.


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