An adequate rate of return on capital yielded by the regulated firms is a central issue related to the new cost-based approach adopted by the Brazilian Telecommunication Regulatory Agency (Anatel). In this context, careful attention must be given to the Weighted Average Cost of Capital (WACC)...

Many of the concepts in theoretical and empirical finance developed over the past decades – including the classical portfolio theory, the Black-Scholes-Merton option pricing model or the RiskMetrics variance-covariance approach to VaR – rest upon the assumption that asset returns follow a...

This paper is intended as a guide to building insurance risk (loss) models. A typical model for insurance risk, the so-called collective risk model, treats the aggregate loss as having a compound distribution with two main components: one characterizing the arrival of claims and another...

This paper is intended as a guide to simulation of risk processes. A typical model for insurance risk, the so-called collective risk model, treats the aggregate loss as having a compound distribution with two main components: one characterizing the arrival of claims and another describing the...

We develop a simple test for deviations from power law tails, which is based on the asymptotic properties of the empirical distribution function. We use this test to answer the question whether great natural disasters, financial crashes or electricity price spikes should be classified as dragon...

"Power security" is a term inevitably related to "risk" and "risk management". Sound risk management practices will not only lead to more financially stable performance of the power sector, but also to a more secure power system. In this article we comment on integrated risk management and its...

In this paper we discuss the several aspects involved in the determination of the cost of capital of the telecommunications industry in Brazil. The cost of capital determination for regulated industries is extremely important, both to regulators and firms, since through the pertinent rate of...

The current methodology adopted by the Aneel to estimate the rate of return (cost of capital) applied in the periodic tariff revision is improved via some modifications in the following parameters: country risk, exchange rate risk and regulatory risk. We recommend the global CAPM methodology...