Search results for " portfolio"

Balancing Profit, Risk, and Sustainability for Portfolio Management

2022

Author's accepted manuscript © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Stock portfolio optimization is the process of continuous reallocation of funds to a selection of stocks. This is a particularly well-suited problem for reinforcement learning, as daily rewards are compounding and objective functions may include more than just profit, e.g., risk and su…

Warren Buffett versus Zvi Bodie: Should You Buy Or Sell Put Options?

2021

Academics and investment professionals often disagree when it comes to investment advice. Legendary investor Warren Buffett is a proponent of time diversification and firmly believes that stocks are less risky in the long run. Therefore, he often sells long-term put options instead of buying them for portfolio protection. By contrast, the famous finance professor Zvi Bodie argues that time diversification is a fallacy and, therefore, his advice to fund managers is to buy long-term portfolio insurance. In this article, we consider the optimal portfolio choice problem for a loss-averse investor. First, we demonstrate that our loss-averse investor subscribes to the principle of time diversific…

"Alliance Portfolio Diversity, Organizational Slack, and Firm Financial Performance"

2014

We investigate how the availability of slack influences a firm’s ability to deal with alliance portfolio diversity. Alliances with diverse partners provide access to a broader pool of complementary...

The impact of systemic and illiquidity risk on financing with risky collateral

2015

Abstract Repurchase agreements (repos) are one of the most important sources of funding liquidity for many financial investors and intermediaries. In a repo, some assets are given by a borrower as collateral in exchange of funding. The capital given to the borrower is the market value of the collateral, reduced by an amount termed as haircut (or margin). The haircut protects the capital lender from loss of value of the collateral contingent on the borrower׳s default. For this reason, the haircut is typically calculated with a simple Value at Risk estimation of the collateral for the purpose of preventing the risk associated to volatility. However, other risk factors should be included in th…

Institutional Contexts, the Management of Patent Portfolios, and the Role of Public Policies Supporting New EntrepreneurialVentures

2009

This chapter aims to increase our understanding of the relationships between firm strategies, the design of institutional contexts on behalf of public agents, and the stimulation of diffused entrepreneurship within the economic system. In particular, it analyzes the way in which firm patent portfolio management strategies may systematically hinder the emergence of entrepreneurial endeavors within the economic system and, on this basis, critically discusses how the acknowledgement of these interactions should influence the design of public policies at the economic system level. We argue that in economic contexts where intellectual property rights (IPR) are influential, large firms may intent…

CO2 Prices and Portfolio Management

2008

Since January 2005, the attention on European carbon markets has been increasing and thus the interest in studying the implications of the existence of two new assets in portfolio management. In this article we analyse both the characteristics of the EUAs Phase I and Phase II as a sole investment and the impact of including these two assets, considered separately, in a well-diversified portfolio. In order to control the problems of using historical returns, we have performed this analysis using as expected returns either historical returns or risk-adjusted returns. We find that, although the weights of EUAs are not too important when incorporating the EUAs in an optimal and well-diversified…

LA FORMAZIONE DEGLI INSEGNANTI: sperimentazione di una metodologia per l’auto-orientamento degli studenti.

Languages and New Technologies: Learning Digital Portfolio in the Stylistics of English

2016

The new perspective of the European Higher Education Area involves new methodologies which foster the information and communication technologies (ICTs). Educating (i.e. teaching and learning) by means of the European Credits Transfer System (ECTS) produced some very significant changes in issues such as “permanent learning and active learning” (Barragan 2009: 2) and ‘learning by means of (professional) competences’ which entail new learning methodologies and new evaluation processes.

Minimal Dynamic Equilibria

2018

We define dynamic models as multiperiod models with no static representations and demonstrate that current prevalent asset pricing empirical implementations are inconsistent with dynamic equilibria. Specifically, empirical implementations are misspecified with respect to three essential asset pricing questions (TEQ): dependency on higher moments, complexity of risk premia, and mean-variance efficiency of the “market portfolio” (ability to proxy pricing kernels/SDFs). While we already know that “Merton” models, and their derivatives, differ from static models in all TEQ, we show that this is the case even the “minimal” dynamic equilibria.

Intellectual Property and Leverage: The Role of Patent Portfolios

2019

This paper analyses the importance of intellectual property in determining capital structure decisions. We argue that firms can use their patent stock as collateral and thereby relax possible debt financing restrictions. Using data from the European Patent Office and balance sheet data of European companies, we find that larger and more valuable patent stocks lead to higher debt-ratios - controlling for well-established capital structure determinants. We further assess variation across as well as within industries and show that effects are mainly driven by tech-oriented and research intensive firms. Drawing on a legislative change in EU- law, allows us to establish a causal relationship bet…