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Participating life insurance contracts allow the policyholder to participate in the annual return of a reference portfolio. Additionally, they are often equipped with an annual (cliquet-style) return guarantee. The current low interest rate environment has again refreshed the discussion on risk management and fair valuation of such embedded options. While this problem is typically discussed from the viewpoint of a single contract or a homogeneous* insurance portfolio, contracts are, in practice, managed within a heterogeneous insurance portfolio. Their valuation must then – unlike the case of asset portfolios – take account of portfolio effects: Their premiums are invested in the same reference portfolio; the contracts interact by a joint reserve, individual surrender options and joint default risk of the policy sponsor. Here, we discuss the impact of portfolio effects on the fair valuation of insurance contracts jointly managed in (homogeneous and) heterogeneous life insurance portfolios. First, in a rather general setting, including stochastic interest rates, we consider the case that otherwise homogeneous contracts interact due to the default risk of the policy sponsor. Second, and more importantly, we then also consider the case when policies are allowed to differ in further aspects like the guaranteed rate or time to maturity. We also provide an extensive numerical example for further analysis. 相似文献
64.
Ralf Boscheck 《Intereconomics》2010,45(6):372-377
The importance of competition law as a policy lever to help the EU compete at the forefront of science and technology seems
to have been overlooked by the Commission. As a consequence, the EU appears to be at a disadvantage to the USA in terms of
the regulatory environment for intellectual property and licensing practices. This article examines these differences and
explores the pros and cons of the European and American approaches to competition law, ultimately arguing in favour of regulatory
harmonisation. 相似文献
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This paper examines auditor liability rules under imperfect information, costly litigation and risk-averse auditors. A negligence rule fails in such a setting, because in equilibrium auditors will deviate with positive probability from any given standard. It is shown that strict liability outperforms negligence with respect to risk allocation and the probability that a desired level of care is met by the auditor if competitive liability insurance markets exist. Furthermore, our model explains the existence of insurance contracts containing obligations a type of contract often observed in liability insurance markets. 相似文献
67.
Ralf W. Seifert 《Economics of Innovation and New Technology》2013,22(1):69-91
In many high-tech industries, the emergence of new digital technologies allows companies to develop converters to overcome technology incompatibility. In this paper, we analyze the effects of converter introduction on the adoption process of competing, incompatible technologies in the presence of network externalities. Converter introduction may accelerate, extend or reverse the technology lock-in process. We determine which conversion options are profitable for weak as well as for dominant incumbents, depending on the timing of converter introduction and the degrees of conversion. We find that the optimal strategy for weak incumbents is to introduce full one-way converters early. For dominant incumbents, the optimal conversion option is to provide two-way converters with partial compatibility for the users of the competing network at a later introduction time. We illustrate our analytical results with numerical examples. 相似文献
68.
This article investigates the nature and relationship of project portfolio control techniques and portfolio management performance, and how this relationship is moderated by situational idiosyncrasies of internal and external dynamics, industries, governance types, and geographic location. A worldwide questionnaire with 242 responses was used, of which 136 high‐performing responses were filtered out for quantitative analysis of best practices. Three portfolio control factors were identified: portfolio selection, portfolio reporting, and decision‐making style. Two measures for portfolio management performance were identified: achievement of desired portfolio results and achievement of project and program purpose. The results indicate that different portfolio control mechanisms are associated with different performance measures. A contingency model was developed, including moderating effects by contextual variables. 相似文献
69.
Adam Ghandar Zbigniew Michalewicz Ralf Zurbruegg 《International Journal of Intelligent Systems in Accounting, Finance & Management》2009,16(1-2):127-146
This paper discusses the design of a quantitative computational intelligence portfolio management system and evaluates the advantages of some adaptive mechanisms to enable the system to adjust its management approach as market conditions change. A detailed analysis of the performance of the system outside is also provided. It is found that an adaptive methodology where trading rules are able to adjust to market conditions performs better, having greater excess returns and lower volatility than a fixed rule approach. We consider several performance metrics, including portfolio alpha and information content. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
70.
Ralf von Ameln 《保险科学杂志》2008,97(2):198-209
All in all it can be stated that both, the establishment and the joining of a KSA, is an activity which is exclusively allocated to the right of self organisation of the local authorities. It is a measure of internal organisation without external procurement character. For this reason from the first the application of the procurement rules following the competition law is already excluded.Even if – in contrary to other argumentation – the competition law rules should be regarded as applicable, the principle of in-house award exceptionally takes effect. 相似文献