In our daily life, almost every family owns a portfolio of assets. This portfolio could contain real assets such as a car, or a house, as well as financial assets such as stocks, bonds or futures. Portfolio theory deals with how to form a satisfied portfolio among an enormous number of assets. Originally proposed by H. Markowtiz in 1952, the mean-variance methodology for portfolio optimization has been central to the research activities in this area and has served as a basis for the development of modem financial theory during the past four decades. Follow-on work with this approach has born much fruit for this field of study. Among all those research fruits, the most important is the capital asset pricing model (CAPM) proposed by Sharpe in 1964. This model greatly simplifies the input for portfolio selection and makes the mean-variance methodology into a practical application. Consequently, lots of models were proposed to price the capital assets. In this book, some of the most important progresses in portfolio theory are surveyed and a few new models for portfolio selection are presented. Models for asset pricing are illustrated and the empirical tests of CAPM for China's stock markets are made. The first chapter surveys ideas and principles of modeling the investment decision process of economic agents. It starts with the Markowitz criteria of formulating return and risk as mean and variance and then looks into other related criteria which are based on probability assumptions on future prices of securities.

The Economics of Aging presents results from an ongoing National Bureau of Economic Research project. Contributors consider the housing mobility and living arrangements of the elderly, their labor force participation and retirement, the economics of their health care, and their financial status. The goal of the research is to further our understanding both of the factors that determine the well-being of the elderly and of the consequences that follow from an increasingly older population with longer individual life spans. Each paper is accompanied by critical commentary.

As defined contribution pensions become prevalent, retirees are increasingly responsible for managing their own pension assets and thus their own financial literacy becomes crucial. Based on empirical evidence and new research, the book examines how financial literacy enhances retirement decision-making in ever more complex financial markets.

A global analysis of the effects of social security reforms on the retirement incentives and labor force trends of older workers. Employment among older men and women has increased dramatically in recent years, reversing a downward trend in the closing decades of the twentieth century. Social Security Programs and Retirement around the World examines how changing retirement incentives have reshaped labor force participation trends among older workers. The chapters feature country-specific analyses for Belgium, Canada, Denmark, France, Germany, Italy, Japan, Netherlands, Spain, Sweden, the United Kingdom, and the United States. They find that while there is significant heterogeneity across countries, the reforms of recent decades have generally reduced the implicit tax on work at older ages. These changes correlate positively with labor force participation. The studies exploit the variation in the timing and extent of reforms of retirement incentives and employ microeconometric methods to investigate whether this correlation reflects a causal relationship. Policy changes appear to have contributed to rising labor force activity, but other factors like the role of women in the labor force, improved health, and changes in private pensions likely also play important roles.

Social Security Policy in a Changing Environment analyzes the changing economic and demographic environment in which social insurance programs that benefit elderly households will operate. It also explores how these ongoing trends will affect future beneficiaries, under both the current social security program and potential reform options. In this volume, an esteemed group of economists probes the challenge posed to Social Security by an aging population. The researchers examine trends in private sector retirement saving and health care costs, as well as the uncertain nature of future demographic, economic, and social trends—including marriage and divorce rates and female participation in the labor force. Recognizing the ambiguity of the environment in which the Social Security system must operate and evolve, this landmark book explores factors that policymakers must consider in designing policies that are resilient enough to survive in an economically and demographically uncertain society.

One of the world’s top experts in behavioral finance offers innovative strategies for improving 401(k) plans. Half of Americans do not have access to a retirement saving plan at their workplace. Of those who do about a third fail to join. And those who do join tend to save too little and often make unwise investment decisions. In short, the 401(k) world is in crisis, and workers need help. Save More Tomorrow provides that help by focusing on the behavioral challenges that led to this crisis inertia, limited self-control, loss aversion, and myopia—and transforms them into behavioral solutions. These solutions, or tools, are based on cutting edge behavioral finance research and they can dramatically improve outcomes by, for example, helping employees: -Save, even if they aren’t ready to do so now, by using future enrollment. -Save more by showing them images of their future selves. -Save smarter by reshuffling the order of funds on the investment menu. Save More Tomorrow is the first comprehensive application of behavioral finance to improve retirement outcomes. It also makes it easy for plan sponsors and their advisers to apply these behavioral tools using its innovative Behavioral Audit process.

From the Pension Research Council of the Wharton School, this book explores the diversity of governmental pension plans and investigates how these financial institutions must change in years to come.