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A note on reward-risk portfolio selection and two-fund separation

This paper presents a general reward-risk portfolio selection model and derives sufcient conditions for two-fund separation. In particular we show that many reward-risk models presented in the literature satisfy these conditions.

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English / 01/01/2011

Does prospect theory explain the disposition effect?

The disposition effect is the observation that investors hold winning stocks too long and sell losing stocks too early. A standard explanation of the disposition effect refers to prospect theory and in particular to the asymmetric risk aversion according to which investors are risk averse when faced with gains and risk-seeking when faced with losses. We show that for reasonable...

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English / 01/01/2011

Bitte keine Schwimmwesten für Kapitäne mehr!

Für Professor Urs W. Birchler vom Swiss Banking Institute
der Uni Zürich ist die Kritik der UBS am Swiss Finish
nicht nachvollziehbar. Die Einführung von CoCos hält
der ehemalige Nationalbanker für sehr sinnvoll.

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Deutsch / 01/01/2011

Must-take cards: Merchant discounts and avoided costs

Antitrust authorities often argue that merchants cannot reasonably turn down payment cards and therefore must accept excessively high merchant discounts. The paper attempts to shed light on this must-take cards view from two angles. First, the paper gives some operational content to the notion of must-take card through the avoided-cost test or tourist test: would the merchant want to...

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English / 01/01/2011

Risk management in turbulent times

DescriptionThe subprime crisis has shown that the sophisticated risk management models used by banks and insurance companies had serious flaws. Some people even suggest that these models are completely useless. Others claim that the crisis was just an unpredictable accident that was largely amplified by the lack of expertise and even naivety of many investors. This book takes the...

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English / 01/01/2011

Liquidity management and corporate demand for hedging and insurance

We analyze the demand for hedging and insurance by a firm facingcash-flow risks. We study how the firm’s liquidity managementpolicy interacts with two types of risk: a Brownian risk that canbe hedged through a financial derivative, and a Poisson risk thatcan be insured by an insurance contract. We find that the patternsof insurance and hedging decisions are pole apart: cash-poor...

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English / 01/01/2011

Free cash flow, issuance costs, and stock prices

We develop a dynamic model of a firm facing agency costs of free cash flow and externalfinancing costs, and derive an explicit solution for the firm’s optimal balance sheet dynamics. Financial frictions affect issuance and dividend policies, the value of cash holdings, and the dynamics of stock prices. The model predicts that the marginal value of cash varies negatively with the...

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English / 01/01/2011

Volatility-of-volatility : A simple model free motivation

Our goal is to provide a simple, intuitive and model-free motivation for the importance of volatility-of-volatility in pricing certain kinds of exotic and structured products.

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English / 01/01/2011

Is the pricing kernel u-shaped?

There is strong empirical evidence that the pricing kernel is U-shaped, which provides a way to explain the substantial coskewness premium. Existing studies typically use a polynomial approximation of the pricing kernel. Problematically, these polynomials have, in most cases, increasing parts by construction. Therefore, it is not clear whether the increasing parts are an artifact of...

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English / 01/01/2011

Expected shortfall for distributions in finance

It has been nearly 50 years since the appearance of the pioneering paper of Mandelbrot (1963) on the non-Gaussianity of financial asset returns, and their highly fat-tailed nature is now one of the most prominent and accepted stylized facts. The recent book by Jondeau et al. (2007) is dedicated to the topic, while other chapters and books discussing the variety of non-Gaussian...

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English / 01/01/2011

Closed-form convexity and cross-convexity adjustments for Heston prices

We present a new and general technique for obtaining closed-form expansions for prices of options in the Heston model, in terms of Black–Scholes prices and Black–Scholes Greeks up to arbitrary order. We then apply the technique to solve, in detail, the cases for the second-order and third-order expansions. In particular, such expansions show how the convexity in volatility, measured...

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English / 01/01/2011

Structured finance, acquisitions and debt agency

Modern corporations use complex debt instruments and pursue acquisitions. In orderto analyze the properties of some of these contracts in the event of an acquisition, thispaper considers a company that has an incumbent capital structure, comprising one of five practically important structured debt contracts. An opportunity for an acquisition comes along that was not ex-ante...

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English / 01/01/2011

Regulated and non-regulated companies, technology adoption in experimental markets for emission permits, and option contracts

This paper examines the investment strategies of regulated companies in abatement technologies, market participants' trading behaviors, and the liquidity level in an inter-temporal cap{and{trade market using laboratory experiments. The experimental analysis is performed under varying market structures: the exclusive presence of regulated companies; the inclusion of subjects not...

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English / 01/01/2011

Entrepreneurial Spawning and Firm Characteristics

We analyze the implications of entrepreneurial spawning for a variety of firm characteristics such as size, focus, profitability, and innovativeness. We examine the dynamics of spawning over time. Our model accounts for much of the empirical evidence relating to the relation between spawning and firm characteristics. Firms that have higher patent quality spawn more, as do firms that...

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English / 01/01/2011

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