A unifying approach to risk-measure-based optimal reinsurance problems with practical constraints

The design of optimal reinsurance treaties in the presence of multifarious practical constraints is a substantive but underdeveloped topic in modern risk management. To examine the influence of these constraints on the contract design systematically, this article formulates a generic constrained reinsurance problem where the objective and constraint functions take the form of Lebesgue integrals whose integrands involve the unit-valued derivative of the ceded loss function to be chosen. Such a formulation provides a unifying framework to tackle a wide body of existing and novel distortion-risk-measure-based optimal reinsurance problems with constraints that reflect diverse practical considerations. Prominent examples include insurers’ budgetary, regulatory and reinsurers’ participation constraints. An elementary and intuitive solution scheme based on an extension of the cost–benefit technique in Cheung and Lo [Cheung, K.C. & Lo, A. (2015, in press). Characterizations of optimal reinsurance treaties: a cost–benefit approach Scandinavian Actuarial Journal. doi:10.1080/03461238.2015.1054303.] is proposed and illuminated by analytically identifying the optimal risk-sharing schemes in several concrete optimal reinsurance models of practical interest. Particular emphasis is placed on the economic implications of the above constraints in terms of stimulating or curtailing the demand for reinsurance, and how these constraints serve to reconcile the possibly conflicting objectives of different parties.     

Mutual fund performance: Using bespoke benchmarks to disentangle mandates,constraints and skill

While no two mutual funds are alike in terms of their mandates and constraints, metrics used to evaluate fund performance relative to peers typically fail to account for these differences by relying on generic benchmark indices and rankings. We develop a methodology to construct a conditional multi-factor benchmark that explicitly incorporates the details of a given fund’s mandates and constraints. The results suggest that (i) mandates and constraints are economically important and affect funds differently, (ii) in general, the average mutual fund has a much improved track record when comparing themselves to a bespoke benchmark, and (iii) the rank ordering of fund bespoke performance relative peers is significantly different than the original rank ordering suggesting advisors and board of directors would make better decisions regarding compensation and performance assessment respectively, if they incorporate the impact of mandates and constraints.     

Infrastructure endowment,financial constraints and willingness to engage in PPPs: The case of Poland

Public-private partnership (PPP) is widely considered to be a solution to overcoming a public infrastructure gap while providing value for money. A growing body of empirical research papers suggests that value for money is not the only reason for a government setting up PPPs. This paper presents a detailed analysis of why local municipalities in Poland have chosen the PPP route to develop public infrastructure.

IMPACT

Government’s investment opportunities are often restricted by debt limits. That is why a PPP can be an attractive solution. Municipalities in Poland seem to opt for PPPs to keep their debt figures low. There is a risk that they are choosing the PPP route for the wrong reasons. Therefore we suggest that legislation is needed that requires greater financial transparency of PPP projects. This could help verify whether PPPs are being compiled according to EUROSTAT rules and to assess if PPP really is the best available option in terms of value for money.     

Quadratic BSDEs driven by a continuous martingale and applications to the utility maximization problem

In this paper, we study a class of quadratic backward stochastic differential equations (BSDEs), which arises naturally in the utility maximization problem with portfolio constraints. We first establish the existence and uniqueness of solutions for such BSDEs and then give applications to the utility maximization problem. Three cases of utility functions, the exponential, power, and logarithmic ones, are discussed. This study is part of my PhD thesis supervised by Professor Ying Hu and defended at the University of Rennes 1 (in France) in October 2007.     

Hard and soft law approaches to addressing psychosocial risks in Europe: lessons learned in the development of the Italian approach

Psychosocial risks in the workplace have been identified as some of the most significant emerging risks, particularly since issues such as work-related stress, which is closely linked to psychosocial risks, are widely recognised as major challenges in modern occupational safety and health. This paper presents the policy framework and key initiatives that have been implemented for the management of psychosocial risks in the workplace in Europe. It discusses several approaches and initiatives, both from a hard and soft law perspective, that have been implemented at European Union and national level. Within this context, it discusses the key issues that pertain to the development of national approaches, focussing as an example on the Management Standards for work-related stress developed in the UK and their recent adaptation in Italy. The Italian approach is discussed in detail as an example that may highlight key process elements in the development of psychosocial risk management policies, and promote good practice in this area through lessons learned. It is concluded that it is more pressing now than ever for a critical evaluation of efforts employed so far to address psychosocial risks to be conducted, and an approach at European level to be developed that will allow both flexibility and a certain level of benchmarking across members states. Such an approach can be supported by European bodies, responsible for surveillance and promotion of good practice, working in collaboration with similar national bodies.     

Defining spending reviews: a proposal for a taxonomy,with applications to Italy and the UK

After the 2008 global financial crisis, many governments introduced spending reviews (SRs). The paper provides a valuable definition of the concept of the SR by proposing a taxonomy of the main organizational and methodological aspects involved in the SR process. The paper identifies two different SR models, which feature alternative approaches to cutting back spending. The authors highlight some important considerations when looking to make sustainable and sensible cuts in spending.     

On the short-maturity behaviour of the implied volatility skew for random strike options and applications to option pricing approximation

In this paper, we propose a general technique to develop first- and second-order closed-form approximation formulas for short-maturity options with random strikes. Our method is based on a change of numeraire and on Malliavin calculus techniques, which allow us to study the corresponding short-maturity implied volatility skew and to obtain simple closed-form approximation formulas depending on the derivative operator. The numerical analysis shows that these formulas are extremely accurate and improve some previous approaches for two-asset and three-asset spread options such as Kirk’s formula or the decomposition method presented in Alòs et al. [Energy Risk, 2011, 9, 52–57]. This methodology is not model-dependent, and it can be applied to the case of random interest rates and volatilities.     

Kalman filter estimation for valuing nontrading securities,with applications to the MMI cash-future spread on October 19 and 20, 1987

The Kalman filter is proposed as a method for estimating the value of nontrading securities during periods when other securities are trading. The method also provides confidence intervals that indicate the degree of uncertainty regarding estimated value. The method is applied to the Major Market Index during the principal days of the 1987 stock market crash. Our results indicate that nonsynchronous trading explains a small but significant portion of the cash-futures spread that prevailed during these days.     

Accounting Undergraduates' Perceptions of Cooperative Learning as a Model for Enhancing their Interpersonal and Communication Skills to Interface Successfully with Professional Accountancy Education and Training

To interface effectively with professional accountancy training, accounting educationalists should ensure that they turn out graduates who possess the interpersonal and communication skills required of today's accountant. Attainment of these skills is promoted by group work. However, little empirical evidence exists to help academics make an informed choice about which form of group learning enhances interpersonal and communication skills. This paper addresses this deficiency by comparing perceptions of skills enhancement between accounting students who experienced traditional or simple group learning and those who undertook cooperative learning. The findings reveal that the cooperative learning cohort perceived their learning experience to be significantly more effective at enhancing interpersonal and communication skills than that of the simple group learning cohort. This study provides evidence that cooperative learning is a more effective model for delivering interpersonal and communication skills than simple group learning, thereby creating a more successful interface between academic accounting and professional accountancy training.