Price Stability in Open Economies

This paper studies the theoretical conditions under which price stability is the optimal policy in a two-country open-economy model with imperfect competition and price stickiness. Special conditions on the levels of country-specific distortionary taxation and the intratemporal and intertemporal elasticities of substitution need to be satisfied. These restrictions apply to both cooperative and non-cooperative settings. Importantly, we show that cooperative and non-cooperative solutions do not coincide despite market completeness and producer currency pricing. We study the conditions under which quadratic approximations of single countries' welfare can be correctly evaluated by relying only on log-linear approximations of the equilibrium conditions.     

Pricing and Informational Efficiency of the MIB30 Index Options Market. An Analysis with High‐frequency Data

We analyse the pricing and informational efficiency of the Italian market for options written on the most important stock index, the MIB30. We report that a striking percentage of the data consists of option prices violating basic no‐arbitrage conditions. This percentage declines when we relax the no‐arbitrage restrictions to accommodate the presence of bid/ask spreads and other frictions but never becomes negligible. We also investigate the informational efficiency of the MIBO and conclude that option prices are poor predictors of the volatility of MIB30 returns. This conclusion is robust to a number of statistical and sampling methods.
(J.E.L.: G13, G14).     

Health Systems and Health Reform in Europe

The organisation of health care differs widely across Europe. Access to services, financing schemes, incentives for better care, and administrative efficiency are challenges that are being dealt with in a variety of ways. Are insurance-based systems the best solution for balancing resources and services or are national health funds preferable? Does the introduction of competition fulfil high hopes for better service at lower costs? What are the relative advantages and drawbacks of central and local management of health care?     

Fiscal consolidations and public debt in Europe

The objective of this paper is to gain insights into the relationship between deficit-reducing policies and the evolution of the debt/GDP ratio. We consider past events of fiscal consolidation in a selected group of EU countries and check what is the associated change of the debt/GDP ratio both from a short- and medium-term perspective. In the analysis, we also differentiate between tax-based and savings-based fiscal consolidations and the pre-Euro and Euro periods. Our results point towards a positive short-term effect, while the medium-term effect turns out to be negative. Savings-based fiscal consolidations result to be less negative on the DGR evolution than tax-based ones. The Euro’s introduction seems not to have altered significantly the relationship studied.     

Enabling and inhibiting factors in adoption of Electronic-Reverse auctions: A longitudinal case study in grocery retailing

Abstract

The paper aims to explore the factors that enable or inhibit the use of Electronic-Reverse Auctions (E-RAs) in the buying process of a large food retail organization, through a category management perspective. Using a case-study analysis based on in-depth interviews, examination of internal documents, simulation and direct observation of some E-RAs, we studied the experience of an Italian-based retailer conducting E-RAs during a two-year period. This approach enabled us to propose an E-RAs development model in retail buying groups, discussing enabling and inhibiting factors such as product, market, organizational and strategic factors. Propositions are developed to stimulate thought and provide guidance for future research.     

RISK‐AVERSION,OPTIMAL LEVERAGE AND THE INVESTMENT–UNCERTAINTY RELATION

We develop a partial equilibrium dynamic model in which firms are risk‐averse. We analyse the determinants of the investment–uncertainty relationship by means of numerical techniques. When firms can borrow ‘outside’ resources at the riskless rate, an increase in price volatility depresses investment for realistic parameter values. In our model, portfolio considerations play an important role. When the marginal revenue of capital becomes more uncertain, the risk‐averse firm's owners reduce their ‘short position’ in the risk‐free asset, thus diminishing the firm's debt level. The contraction in leverage reduces the expected returns on investment because the expected marginal revenue product is higher than the user cost of capital. In turn, the reduction in expected yields tends to depress investment.     

Pricing Inefficiencies in Private Real Estate Markets Using Total Return Swaps

Efficient markets should guarantee the existence of zero spreads for total return swaps. However, real estate markets have recorded values that are significantly different from zero in both directions. Possible explanations might suggest non-rational behaviour by inexperienced market players or unusual features of the underlying asset market. We find that institutional characteristics in the underlying market lead to market inefficiencies and, hence, to the creation of a rational trading window with upper and lower bounds within which transactions do not offer arbitrage opportunities. Given the existence of this rational trading window, we also argue that the observed spreads can substantially be explained by trading imbalances due to the limited liquidity of a newly formed market and/or to the effect of market sentiment, complementing explanations based on the lag between underlying market returns and index returns.