The degree of comovement across national stock markets has increased dramatically since the mid-1990s. This has overturned a stylized fact in the international portfolio diversification literature that diversifying across countries is more effective for risk reduction than diversifying across industries. We investigate if this rise in comovement is a permanent phenomenon driven by greater economic and financial integration, or a temporary effect associated with the recent stock market bubble. At the global level, our results point to the bubble. At a regional level, we find evidence of a significant rise in market integration within Europe, possibly a reflection of institutional changes such as the EMU.

The degree of comovement across national stock markets has increased dramatically since the mid-1990s. This has overturned a stylized fact in the international portfolio diversification literature that diversifying across countries is more effective for risk reduction than diversifying across industries. We investigate if this rise in comovement is a permanent phenomenon driven by greater economic and financial integration, or a temporary effect associated with the recent stock market bubble. At the global level, our results point to the bubble. At a regional level, we find evidence of a significant rise in market integration within Europe, possibly a reflection of institutional changes such as the EMU.

A stylized fact in the portfolio diversification literature is that diversifying across countries is more effective than diversifying across industries in terms of risk reduction. But with the rise in comovement across national stock markets since the mid-1990s, this no longer appears to be true. We explore whether this change is driven by global integration and therefore likely to be permanent, or if it is a temporary phenomenon associated with the recent stock market bubble. Our results point to the latter hypothesis. In the aftermath of the bubble, diversifying across countries may therefore still be effective in reducing portfolio risk.

This four-volume handbook covers important concepts and tools used in the fields of financial econometrics, mathematics, statistics, and machine learning. Econometric methods have been applied in asset pricing, corporate finance, international finance, options and futures, risk management, and in stress testing for financial institutions. This handbook discusses a variety of econometric methods, including single equation multiple regression, simultaneous equation regression, and panel data analysis, among others. It also covers statistical distributions, such as the binomial and log normal distributions, in light of their applications to portfolio theory and asset management in addition to their use in research regarding options and futures contracts.In both theory and methodology, we need to rely upon mathematics, which includes linear algebra, geometry, differential equations, Stochastic differential equation (Ito calculus), optimization, constrained optimization, and others. These forms of mathematics have been used to derive capital market line, security market line (capital asset pricing model), option pricing model, portfolio analysis, and others.In recent times, an increased importance has been given to computer technology in financial research. Different computer languages and programming techniques are important tools for empirical research in finance. Hence, simulation, machine learning, big data, and financial payments are explored in this handbook.Led by Distinguished Professor Cheng Few Lee from Rutgers University, this multi-volume work integrates theoretical, methodological, and practical issues based on his years of academic and industry experience.

We explore the link between international stock market comovement and the degree to which firms operate globally. Using stock returns and balance sheet data for companies in 20 countries, we estimate a factor model that decomposes stock returns into global, country-specific and industry-specific shocks. We find a large and highly significant link: on average, a firm raising its international sales by 10 percent raises the exposure of its stock return to global shocks by 2 percent and reduces its exposure to country-specific shocks by 1.5 percent. This link has grown stronger since the mid-1980s.

This edited collection assesses the level of financial integration in the European Union (EU) and the differences across the countries and segments of the EU financial system. Progress in financial integration is key to the EU’s economic growth and competitiveness and although it has advanced substantially, the process is still far from completion. This book focuses on the pace of financial integration in the EU with special emphasis on the new EU Member States and investigates their progress in comparison with ‘old’ EU countries. The book is the first of its kind to include and evaluate the effects of the global financial crisis on the process of EU financial integration. In particular, the book’s contributors address the issue of whether a high degree of financial integration contributed to the intensification of the financial crisis, or whether a low level of integration prevented countries and financial industries from some of the negative effects of the crisis. Although most of the chapters apply contemporary econometric tools, the technical part is always reduced to indispensable minimum and the emphasis is given to economic interpretation of the results. The book aims to offer an up to date and insightful examination of the process of financial integration in the EU today.

We examine risk spreads charged on corporate bonds placed by emerging market borrowers on international exchanges. While global developments have an important effect on spreads, changes in firm-level default risk also matter significantly in a way consistent with theory and experience in mature markets. In contrast, except during periods of financial crisis, country factors play a limited role. These findings go against the supposition that limited information on emerging market firms or significant agency problems prevent firm-level credit discrimination by international investors. The firm-level information capitalization into spreads possibly reflects protection afforded by the exchange listing on international markets.