Highway to (Digital) Surveillance: When Are Clients Coerced to Share Their Data with Insurers?

Journal of Business Ethics - Clients may feel trapped into sharing their private digital data with insurance companies to get a desired insurance product or premium. However, private insurance must...     

Entrepreneurship in Europe

This article focuses on the changes in attitude and venture capital provision that the author believes are necessary to rekindle the spirit of entrepreneurship in Europe. The article goes on to discuss technology clusters and the role of stock markets. It then describes the way the Cambridge-based Amadeus venture capital company sets about the venture capital process. It concludes with a plea for entrepreneurship centres to be set up in each university and for some changes in government policy.     

Armut in Deutschland – versagt der Sozialstaat?

Empirische Untersuchungen haben nachgewiesen, dass es in Deutschland in einem betr?chtlichen Ausma? Armut gibt. Wie wird Armut definiert? Wie kann man Armut messen? Hat in Deutschland die Ungleichheit der Einkommensverteilung zugenommen? Welche Ma?nahmen müssten ergriffen werden, um Armut zu verhindern? Prof. Dr. Richard Hauser, 70, ist Emeritus des Lehrstuhls für Volkswirtschaftslehre, insbesondere Verteilungs- und Sozialpolitik, an der Johann-Wolfgang-Goethe-Universit?t in Frankfurt am Main. * Vortrag gehalten im Rahmen der Tagung der Akademie für politische Bildung Tutzing in Zusammenarbeit mit dem Studienseminar für Berufliche Schulen in Südbayern zum Thema Umbau oder Abbau – wie viel Zukunft hat der deutsche Sozialstaat? vom 18.-20. Dezember 2006 in Tutzing.     

Contestability and Pay Differential in the Executive Suites

In comparison to the abundant evidence on CEOs' compensations, little is known about the compensation of other senior executives, and on how the pay differential between CEO and other senior executives affects firm performance. We examine several potential explanations of the pay differential in the executive suite, using a sample of 367 Israeli firms listed on the Tel-Aviv Stock Exchange. The empirical results fail to support the tournament and pay equity models. Instead, our evidence suggests a model where senior executives are encouraged (by the structure implied in their pay contract) to cooperate with each other (the team playing model). In a subset of firms managed by their owners we observe greater pay differentials between the owner-CEO and other senior executives. Interestingly, only in this subset of owner-managed firms, higher pay differentials can be associated with better firm performance.     

ECONOMIC BURDENS OF MARITAL DISRUPTIONS: A COMPARISON OF THE UNITED STATES AND THE FEDERAL REPUBLIC OF GERMANY

Longitudinal data from the Panel Study of Income Dynamics and the German Socio-Economic Panel are used to show that women and children are worse off following a marital split than are men in both the United States and Germany. The size of the difference is sensitive to the equivalence scale used, but despite its far more extensive tax and transfer system the disparate impact of divorce or separation on women and children persisted in Germany at a level at least as high as in the United States.     

Hedging Strategies of Financial Intermediaries: Pricing Options with a Bid-Ask Spread

This paper uses a model similar to the Boyle-Vorst and Ritchken-Kuo arbitrage-free models for the valuation of options with transactions costs to determine the maximum price to be charged by the financial intermediary writing an option in a non-auction market. Earlier models are extended by recognizing that, in the presence of transactions costs, the price-taking intermediary devising a hedging portfolio faces a tradeoff: to choose a short trading interval with small hedging errors and high transactions costs, or a long trading interval with large hedging errors and low transactions costs. The model presented here also recognizes that when transactions costs induce less frequent portfolio adjustments, investors are faced with a multinomial distribution of asset returns rather than a binomial one. The price upper bound is determined by selecting the trading frequency that will equalize the marginal gain from decreasing hedging errors and the marginal cost of transactions.     

The Price of Options Illiquidity

The purpose of this paper is to examine the effect of illiquidity on the value of currency options. We use a unique dataset that allows us to explore this issue in special circumstances where options are issued by a central bank and are not traded prior to maturity. The value of these options is compared to similar options traded on the exchange. We find that the nontradable options are priced about 21 percent less than the exchange-traded options. This gap cannot be arbitraged away due to transactions costs and the risk that the exchange rate will change during the bidding process.     

Semiparametric and nonparametric testing for long memory: A Monte Carlo study

The finite sample properties of three semiparametric estimators, several versions of the modified rescaled range, MRR, and three versions of the GHURST estimator are investigated. Their power and size for testing for long memory under short-run effects, joint short and long-run effects, heteroscedasticity andt-distributions are given using Monte Carlo methods. The MRR with the Bartlett window is generally robust with the disadvantage of a relatively small power. The trimmed Whittle likelihood has high power in general and is robust except for large short-run effects. The tests are applied to changes in exchange rate series (daily data) of 6 major countries. The hypothesis of no fractional integration is rejected for none of the series.