The volatility of an asset price measures how uncertain we are about future asset price movements. It is one of the factors affecting option price and the only input into the Black–Scholes model that cannot be directly observed. Thus, estimating volatility properly is vital. Two approaches to...

This paper analyses the optimal investment strategy in the stock markets of a selected group of South American countries: Mexico, Brazil, Argentina and Chile. The Markowitz efficiency frontiers are derived based on daily stock market index returns expressed in US dollars, for the period of 1...

This paper investigates the transition of the LMF toward its optimal size. Once the firm has decided on the optimal number of members, the question of how to move toward that equilibrium must be addressed. The firm may not currently find itself at the optimal level for two reasons. Either the...

During the first decade of Israel's existence large waves of immigrants came from Europe and the Middle East. This paper introduces an empirical study which compares the occupational socioeconomic score differentials between ethnic groups within and outside the kibbutz. The three groups examined...

This paper examines the controversy involving international trade by employing a simple model. It analyzes the effects of unilateral technological improvements in one entity on the welfare of that entity and its trading partners. Improvements in one country are irreversible and lead to...

Many are currently studying the origins of the financial crisis in an attempt to answer two seemingly simple questions: why did it happen, and can another crisis be prevented? Those two questions have proved incredibly divisive. The majority opinion of The United States Financial Crisis Inquiry...

This paper analyzes the responses of the United States and the economies of the Economic and Monetary Union (EMU) to the financial and economic crisis of 2008–2009. The crisis illuminates the fundamental structural problems within the EMU, the European Union and the United States and the scale...