Search results for " portfolio"

Dominating Clasp of the Financial Sector Revealed by Partial Correlation Analysis of the Stock Market

2010

What are the dominant stocks which drive the correlations present among stocks traded in a stock market? Can a correlation analysis provide an answer to this question? In the past, correlation based networks have been proposed as a tool to uncover the underlying backbone of the market. Correlation based networks represent the stocks and their relationships, which are then investigated using different network theory methodologies. Here we introduce a new concept to tackle the above question--the partial correlation network. Partial correlation is a measure of how the correlation between two variables, e.g., stock returns, is affected by a third variable. By using it we define a proxy of stoc…

2017

The aim of this study is to contribute to a better understanding of challenges and factors which influence learning efficiency with electronic-portfolios. Based on the Technology Acceptance Model (TAM; Davis, Bagozzi, & Warshaw, 1989) we analyzed external variables (e.g., computer-anxiety) that influence technology acceptance and the actual system use in form of self-regulated learning. Additionally we included computer related attitudes and correlated them with external variables as well as measures of self-regulated learning. To foster learning efficacy with electronic portfolios the program Microsoft OneNote was used. A group of N = 32 preservice teachers worked on an electronic-port…

Exploring the Relationship between Information Technology Infrastructure Library and Process Management: Theory Development and Empirical Testing

2014

This paper investigates whether information technology (IT) departments that implement the IT Infrastructure Library (ITIL) processes also employ process management. This is a pertinent issue, as ITIL not only implies a time-limited program for redesigning vital IT processes according to best practices but a complete transformation to ITIL also implies that processes are managed on a daily basis. Without process management, ITIL will not be a success beyond its initial implementation. A survey of 444 Nordic ITIL experts was conducted to examine if there is a correlation between the implementation of ITIL processes and process management. The results are unambiguous and promising for sustain…

Wine - investment: a profitable alternative investment or a simple long term pleasure?

2014

International audience; The purpose of this work is twofold: - to make a first historic analysis of performance through an investment in wine by comparing its performance with those that would have been possible to obtain at the same time by providing financial term investments; - to introduce the regional diversity of performance by considering the situation in the three selected geographic areas.

Enabling a culture for IT services; the role of the IT infrastructure library

2016

Building on process management and service climate theories, this paper investigates the pertinent issues of whether firms that implement ITIL best practices for IT service management will also experience growth in their process management activities and IT service climate. First, ITIL practices imply that processes in the IT department should be managed on a daily basis; without process management, ITIL will fail beyond its initial implementation. Second, two of the main reasons for adopting ITIL are to become a service-oriented organisation and to deliver IT services that meet business needs. Thus, we hypothesise that as the implementation status of ITIL increases, process management and …

Using the ITIL Process Reference Model for Realizing IT Governance: An Empirical Investigation

2014

Information Technology Infrastructure Library ITIL is a popular framework for IT governance, but little academic research on ITIL exists. The authors investigate the overlap between ITIL and IT governance practices to illustrate ITIL's potential to stimulate IT governance. A field study shows that IT implementation success is particularly influenced by group efficacy and organizational resources, and, to a lesser extent, senior-management involvement. Findings show that ITIL, as expected, is a framework that contributes to IT governance by stimulating process management practices.

Kredītēšana Latvijā: Attīstība un problēmas

2016

Galvenais kreditēšanas uzdevums ir veicināt labvēlīgus makroekonomiskos apstākļus tautsaimniecības ilgtermiņa attīstībai. Kreditēšanai ir nepieciešama cieša uzraudzība, lai tās darbība būtu vērsta uz attīstību. Sava darba sākumā autore sniedz informāciju par pareizu kreditēšanas pārvaldību, ar to saistītajiem riskiem un kontroles pasākumiem. Lai atspoguļotu kreditēšanas attīstības posmus, tiek veikta komercbanku un ne-banku kredītportfeļa un ar to saistīto risku analīze. Tiek atklātas kreditēšanas problēmas no aizņēmēju un aizdevēju puses, piedāvāti iespējamie pasākumi to novēršanai. Darbā tiek noskaidrotas pastāvošās problēmas Latvijas kreditēšanas situācijā, tiek piedāvāti iespējamie vari…

The Role of Risk and Information for International Capital Flows: New Evidence from the SDDS

2012

In this paper, we investigate whether better information about the macroeconomic environment of an economy has a positive impact on its capital inflows, namely portfolio and foreign direct investment (FDI). The purpose of our study is to explicitly quantify information asymmetries by compliance with the IMF's Special Data Dissemination Standard (SDDS). For FDI, we fi nd statistically signi cant and robust support for this hypothesis: SDDS subscription increased inflows by an economically relevant magnitude of about 60 percent. We also find evidence of aversion against political and macroeconomic risk as determinants of portfolio and FDI flows and use a non-parametric test for spatial correl…

Learning and the Price Dynamics of a Double-Auction Financial Market with Portfolio Traders

2006

In this paper we study the dynamics of price adjustments in an artificial market where portfolio traders with bounded rationality and limited resources interact through a continuous, electronic open book. The present work extends the model developed in [? ] introducing endogenous target individual portfolio holdings. We model the agents’ order-flow investment decision as an optimal choice given individual characteristics and the available information. We depart from the standard asset pricing framework in two ways. First, we assume that investors have imperfect information about the returns distribution. In particular, we assume that agents hold arbitrary priors about securities’ returns, w…

The Dynamics of Quote Prices in an Artificial Financial Market with Learning Effects

2007

In this paper we study the evolution of bid and ask prices in an electronic financial market populated by portfolio traders who optimally choose their allocation strategy on the basis of their views about market conditions. Recently, a growing literature has investigated the consequences of learning about the returns process1. There has been an increasing interest in analyzing what are the implications of relaxing the assumption that agents hold correct expectations. In particular, it has been asked the fundamental question of understanding if typical asset-pricing anomalies (like returns predictability, and excess volatility) can be generated by a learning process about the underlying econ…