In this paper, we propose a multivariate market model with returns assumed to follow a multivariate normal tempered stable distribution. This distribution, defined by a mixture of the multivariate normal distribution and the tempered stable subordinator, is consistent with two stylized facts...

In this paper, we propose a multivariate market model with returns assumed to follow a multivariate normal tempered stable distribution. This distribution, defined by a mixture of the multivariate normal distribution and the tempered stable subordinator, is consistent with two stylized facts...

The problem we want to solve in this paper is that of finding a statistical test that pennits us to compare the impulse response function (JRF) of a linear model with that of a nonlinear one. We achieve our goal starting with a simple case where the comparison is between two VAR models of...

In the last few years new techinques able to help in explaining macroeconomic fluctuations have been developed. Following the article o fBlanchard (1989), concerning US macroeconomic data we will examine the UK economy using a new methodology, the so called "Structural" VAR analysis, developed...

Diversification is a core concept in Asset Management. Yet diversification can mean different things to different people and there no consensus on how it is measured nor is there a broadly accepted metric for reporting of diversification. Sometimes, there is confusion in understanding...

In this paper we propose a new risk decomposition technique. Taking an example of a portfolio of assets that can be decomposed into sub portfolios and also represented using a factor model, investment professionals have access to tools that can represent risk from three different perspectives...

In the wide panorama of investment strategies, the Liability-Driven one aims at creating an optimal portfolio by beating a chosen liability. In this paper we will extend the problem by considering as utility function, to be maximized, the joint probability that the Funding Ratio is above a...

In this paper, we propose a multivariate market model with returns assumed to follow a multivariate normal tempered stable distribution. This distribution, defined by a mixture of the multivariate normal distribution and the tempered stable subordinator, is consistent with two stylized facts...

The aim of this paper is to shed new light on the concept of diversification showing that it is not necessarily related to the reduction of the volatility of a portfolio, as it is commonly perceived. We introduce a diversification index that exploits the decomposition of portfolio volatility...

In Liability Driven Investing (LDI) the profile of future liabilities is an explicit component of the asset allocation process. Similarly, Assets and Liabilities Management (ALM) deals with mismatches between assets and liabilities in banking books. Since extreme events have become the rule in...