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Decisions in Economics and Finance OnlineFirst articles

Open Access 26-01-2024

On entropy martingale optimal transport theory

In this paper, we give an overview of (nonlinear) pricing-hedging duality and of its connection with the theory of entropy martingale optimal transport (EMOT), recently developed, and that of convex risk measures. Similarly to Doldi and Frittelli …

Authors:
Alessandro Doldi, Marco Frittelli, Emanuela Rosazza Gianin

Open Access 22-01-2024

Modeling financial leasing by optimal stopping approach

Leasing valuation is a topic that has aroused considerable interest in business circles. This paper examines leasing from the point of view of the lessor who can decide to leave the contract due to default. We analyze in introducing a model in …

Authors:
Luigi De Cesare, Lucianna Cananà, Tiziana Ciano, Massimiliano Ferrara

22-01-2024

The impact of a winner takes all tournament on managers’ strategies and asset mispricing

We investigate the asset’s price and the portfolio choices of the managers in the equilibrium generated by a winner takes all contest in a financial market with cash and a risky asset. The manager’s payoff consists in the value of the portfolio at …

Author:
Enrico Lupi

22-01-2024

The interaction between variable annuity providers and their customers under a dynamic approach

We consider an insurer offering various single premium variable annuity contracts with a guaranteed lifetime withdrawal benefit (GLWB) rider to policyholders. All the contracts have the same structure, but differ for the contractual parameters or …

Authors:
Anna Rita Bacinello, Rosario Maggistro, Ivan Zoccolan

Open Access 18-01-2024

Mortgages with non-random time-varying interest rates

Here we introduce an “alternative” version of the standard traditional amortization plan, where sequences of non-random time-varying periodic interest rates replace the usual constant periodic effective rate, while preserving all the other …

Author:
Laura Ziani

Open Access 12-01-2024

Input/output-style approach to standardized traditional amortization plans

We apply an Input/Output approach to the analysis of the so-called traditional standardized amortization plans (STAP). The approach is based on a clear distinction between Input/trigger and Output of a STAP. The Output is a set of four vectors …

Authors:
Flavio Pressacco, Laura Ziani

11-01-2024

Designing amortization plans by fairness

Amortization plans are well-known financial operations to repay interest-bearing loans through a sequence of periodic payments. Since amortization plans are generally settled according to the compound interest law, some questions arise about the …

Authors:
Rosario Maggistro, Mario Marino, Renato Pelessoni, Liviana Picech

Open Access 05-01-2024

Variance of entropy for testing time-varying regimes with an application to meme stocks

Shannon entropy is the most common metric for assessing the degree of randomness of time series in many fields, ranging from physics and finance to medicine and biology. Real-world systems are typically non-stationary, leading to entropy values …

Authors:
Andrey Shternshis, Piero Mazzarisi

02-01-2024

A non-invariance result for the spatial AK model

This paper deals with the positivity condition of an infinite-dimensional evolutionary equation, associated with a control problem for the optimal consumption over space. We consider a spatial growth model for capital, with production generating …

Author:
Cristiano Ricci

16-12-2023

Linear-quadratic-singular stochastic differential games and applications

We consider a class of non-cooperative N-player nonzero-sum stochastic differential games with singular controls, in which each player can affect a linear stochastic differential equation in order to minimize a cost functional which is quadratic …

Author:
Jodi Dianetti

Open Access 15-12-2023

The geometry of risk adjustments

We present a geometric approach to portfolio theory with a focus on risk-adjusted returns, in particular Jensen’s alpha. We find that while the alpha/beta approach has severe limitations, especially in higher dimensions, only minor conceptual …

Authors:
Hans-Peter Bermin, Magnus Holm

14-12-2023

Generally acceptable principles for financial amortization: a modest proposal

We propose a minimal set of commonly acceptable principles to consistently formulate amortization schedules in accordance with different contractual clauses. Our goal is bringing to the fore premises that are sometimes left implicit, and yet seem …

Authors:
Francesca Beccacece, Marco LiCalzi

07-12-2023

Actuarial modelling of Australian population retirement risks: an Australian functional disability and health state model

With increasing numbers of Australians in or entering retirement, the modelling of functional disability and health status is critical to the insuring and financing of retirement risks for both governments and individuals. The multi-state …

Authors:
Kyu Park, Michael Sherris

Open Access 23-11-2023

The emergence of chaos in productivity distribution dynamics

The distribution of productivity levels, and its evolution over time, is a research topic of utmost importance in empirical and theoretical economics. On the theory side, simple analytical models, involving intertemporal optimization, typically …

Author:
Orlando Gomes

Open Access 15-11-2023

Lee–Carter model: assessing the potential to capture gender-related mortality dynamics

We investigate the ability of the Lee–Carter model to effectively estimate the gender gap ratio (GGR), the ratio between the male death rates over the female ones, by using a Cox–Ingersoll–Ross (CIR) process to provide a stochastic representation …

Authors:
Giovanna Apicella, Emilia Di Lorenzo, Gabriella Piscopo, Marilena Sibillo

Open Access 02-11-2023

An investigation of the Volatility Adjustment

We use market data to reconstruct the volatility adjustment, a component of the Solvency II framework designed to mitigate the impact of market risk on insurance liabilities, of different countries on a monthly basis. Only partially in agreement …

Authors:
Emilio Barucci, Daniele Marazzina, Edit Rroji

16-10-2023

Stochastic differential equations death rates models: the Portuguese case

In recent years, the increasing life expectancy of the world’s population, due to increased availability of prescribed medication, quality of healthcare services, quantity of healthcare institutions and quality of life, combined with a sharp …

Authors:
Daniel dos Santos Baptista, Nuno M. Brites, Alfredo D. Egídio dos Reis

Open Access 28-09-2023

Amortization plans in simple, compound and hybrid framework: a unifying approach

In this paper, five different types of amortization plans with constant instalments are analyzed with a unified approach: a pair of plans in simple interest regime, a pair of plans in compound interest regime and a plan in a hybrid context. In the …

Authors:
Laura Ziani, Flavio Pressacco

14-08-2023

What is the value of the annuity market?

In the decumulation phase of a pension plan, consumption depends on the level of annuitization. We measure the welfare loss of an individual with a demand for annuitization if he has no access to annuitization or, equivalently, does not use such …

Authors:
Mogens Steffensen, Julie Bjørner Søe

Open Access 12-08-2023

The economic cost of social distancing during a pandemic: an optimal control approach in the SVIR model

We devise a theoretical model for the optimal dynamical control of an infectious disease whose diffusion is described by the SVIR compartmental model. The control is realized through implementing social rules to reduce the disease’s spread, which …

Authors:
Alessandro Ramponi, M. Elisabetta Tessitore