This paper analyzes how combining firms into either groups or conglomerates affects their credit standing, as measured by their de- fault probabilities, recovery rates and credit spreads. Each combina- tion offers protection against default to its affiliates, and issues debt to optimize the...

The paper investigates the costs of waste disposal and recycling services by using a well-behaved Composite cost function model. Our estimates on a unique sample of more than 500 Italian municipalities highlight that the refuse collection technology exhibits constant returns to scale as well as...

This paper investigates the determinants of board compensation for a sample of Italian State Owned Enterprises (SOEs). To that purpose, we use a newly collected panel data of 106 local public utilities observed form 1994 through 2004, which includes detailed information on the boards of...

This paper explores the link between accountability, corruption and efficiency in the context of a career concern model where politically con- nected local monopolies are in charge of the provision of a local public service. We fi?nd that both corruption and a low degree of accountabil- ity...

Household portfolios include risky bonds, beyond stocks, and respond to permanent labour income shocks. This paper brings these features into a life-cycle setting, and shows that optimal stock investment is constant or increasing in age before retirement for realistic parameter combinations. The...

In this paper, using a sample of Italian passenger transport firms, we compare the estimates from a Composite Cost Function econometric model (Pulley and Braunstein, 1992) with the ones coming from other traditional functional forms such as the Standard Translog, the Generalized Translog, and...

The paper investigates the link between corruption and efficiency by using a rich micro-level dataset concerning solid waste collection activities in 529 Italian municipalities observed over the years 2004-2006. In order to test the impact of corruption on cost efficiency we estimate a...

The focus of the paper is to analyze the costs of solid waste collection by applying a well-behaved multi-product cost function model to a sample of more than 500 Italian municipalities. Beyond shedding light on the presence and on the extent of size (or scale) economies, our aim is to...

This paper examines the ex-post performance of optimal portfolios with predictable returns, when the investor horizon ranges from one month to ten years. Due to the investor's ability to anticipate shifts from bull to bear markets, predictability involves the risk premium, volatility and...

Recent research [e.g., DeMiguel, Garlappi and Uppal, (2009a), Rev. Fin. Studies] has cast doubts on the out-of-sample performance of optimizing portfolio strategies relative to a naive, equally-weighted ones. However, most of the existing results concern the simple case in which an investor has...