Endogenous debt maturity and rollover risk

We empirically study the nature of rollover risk and show how banks manage it. Having to roll over debt does not lead to higher default risk per se. Only banks that lose significant access to new funding while having to roll over debt display higher default risk. We identify a factor that determines this buildup of risk: specifically, debt maturity shortening (forcing debt to be more frequently rolled over) and reduced access to new funding are both driven by market pessimism about banks’ future performance. We also provide evidence consistent with dynamic coordination risk.     

Patent citations reexamined

Many studies rely on patent citations to measure intellectual heritage and impact. In this article, we show that the nature of patent citations has changed dramatically in recent years. Today, a small minority of patent applications are generating a large majority of patent citations, and the mean technological similarity between citing and cited patents has fallen considerably. We replicate several well-known studies in industrial organization and innovation economics and demonstrate how generalized assumptions about the nature of patent citations have misled the field.     

Charting service ecosystems flexibility: A museum setting

The service ecosystems perspective has rarely been applied in literature tackling the nonprofit and voluntary sectors. Service ecosystems are defined as self-adjusting systems of resource-integrating actors connected by shared institutional arrangements and mutual value creation. By addressing service ecosystems flexibility (i.e., the ability of service ecosystems to adjust to changes), this article seeks to provide a framework that charts service ecosystems flexibility and explains its pillars, as well as the ways in which new technologies affect visitors and arts. The study focuses on service ecosystems changes initiated by technology, visitors, and organizers, aimed at increasing the level of museum visitors' experience. The study is performed in a service ecosystem comprising a sculpture arts exhibition and its online extensions in the form of Instagram, Facebook, and Twitter accounts. Collected data consist of interviews with the exhibition visitors and organizers, participative observations performed in the exhibition context, and online posts and media coverage related to the exhibition. The research process is iterative and abductive, continuously combining insights that emerge from the literature and the analyzed data through triangulation. The main findings emphasize organizers' pivotal role as the actor that orchestrates value cocreation in the service ecosystem by steering this process based on emerging changes. Additionally, the findings flesh out the role of technology in a service ecosystem and offer a more comprehensive view of service ecosystems flexibility.     

Ownership ties,conflict of interest,and the tone of news

This paper investigates the tone newspapers use in reporting information on a company that it is linked with through an ownership tie. Our empirical setting is Italy, a country characterized by dominant national industrial groups’ high ownership of newspapers. Based on a sample of about 123,000 articles, we document that newspapers’ coverage of firms in conflict of interest is greater, with significantly fewer negative and uncertain words. We also document that the slant increases with ownership stakes and decreases with the newspaper's reputation.     

Motivation crowding‐out and green‐paradox‐like outcomes

We analyze the effectiveness of environmental policy in a framework in which households’ utility is determined by both private and social components, representing their extrinsic and intrinsic motivations to undertake green actions, respectively. Environmental policy, in the form of a subsidy aiming to incentivize the adoption of a green technology, on the one hand, directly increases households’ extrinsic motivation, while, on the other hand, indirectly decreases their intrinsic motivation. We show that, provided that the indirect effect dominates, the policy leads to crowding‐out of intrinsic motivation which ultimately undermines the effectiveness of the policy itself. Specifically, despite its positive effect on environmental outcomes in the short run, the policy will lead to a deterioration in long‐run environmental outcomes, giving rise to a reverse green‐paradox‐like outcome. Moreover, even in the case in which the direct effect dominates, provided that the indirect effect is large enough, the policy will generate a deterioration in short‐run environmental outcomes. These results clearly suggest that the optimal design of environmental policy is particularly complicated since it requires to take into account also its effects on intrinsic motivation.     

Productivity growth,Smith effects and Ricardo effects in Euro Area's manufacturing industries

We analyse the determinants of labour productivity across (a sample of) EA member states. We focus on the divergent dynamics before and after the financial crisis, and of core countries relative to peripheral countries. We ground our empirical analysis in Paolo Sylos-Labini's productivity equations. We test different models, including a Panel 2S-LS model and a Panel vector autoregression model. Our preliminary findings confirm and strengthen Sylos-Labini's main insights. Labour productivity in manufacturing industries is strongly and positively correlated with the market size (Smith effect), the relative cost of labour (Ricardo effect), the absolute cost of labour (organization effect) and past investment, whereas it is negatively correlated with current investment. Furthermore, we find evidence that the crisis has affected the size of these effects. Focusing on the core periphery dichotomy, the signs of the effects are the same for both groups of countries, although the Smith, Ricardo and long-run investment effects are usually stronger for core countries compared to peripheral countries. The opposite holds for the organization effect, while investment effects are less clear.     

Students’ perception of CSR and its influence on business performance. A multiple mediation analysis

Firm managers play an important role in the implementation of corporate social responsibility (CSR) actions. Education is emerging as the key factor in developing a sense of moral responsibility amongst the business students who will eventually become company managers and decision makers. The aim of this research is, thus, twofold. First, to analyze the existence of a direct positive correlation between university students’ perception of CSR and its impact on business performance; and second, to examine the extent to which two factors (advantages brought by CSR and responsibilities toward stakeholders) act as mediation variables in the aforementioned correlation. The analysis was performed with a sample of 390 business‐related university students. Amongst the potential contributions made by this study we can highlight the possibility of knowing future managers’ way of thinking and of knowing the aspects where educational centers might improve their CSR teaching.     

Network valuation in financial systems

We introduce a general model for the balance‐sheet consistent valuation of interbank claims within an interconnected financial system. Our model represents an extension of clearing models of interdependent liabilities to account for the presence of uncertainty on banks' external assets. At the same time, it also provides a natural extension of classic structural credit risk models to the case of an interconnected system. We characterize the existence and uniqueness of a valuation that maximizes individual and total equity values for all banks. We apply our model to the assessment of systemic risk and in particular for the case of stress testing. Further, we provide a fixed‐point algorithm to carry out the network valuation and the conditions for its convergence.     

Entropy martingale optimal transport and nonlinear pricing–hedging duality

The objective of this paper is to develop a duality between a novel entropy martingale optimal transport (EMOT) problem and an associated optimisation problem. In EMOT, we follow the approach taken in the entropy optimal transport (EOT) problem developed in Liero et al. (Invent. Math. 211:969–1117, 2018), but we add the constraint, typical of martingale optimal transport (MOT) theory, that the infimum of the cost functional is taken over martingale probability measures. In the associated problem, the objective functional, related via Fenchel conjugacy to the entropic term in EMOT, is no longer linear as in (martingale) optimal transport. This leads to a novel optimisation problem which also has a clear financial interpretation as a nonlinear subhedging problem. Our theory allows us to establish a nonlinear robust pricing–hedging duality which also covers a wide range of known robust results. We also focus on Wasserstein-induced penalisations and study how the duality is affected by variations in the penalty terms, with a special focus on the convergence of EMOT to the extreme case of MOT.

     

Local volatility under rough volatility

Several asymptotic results for the implied volatility generated by a rough volatility model have been obtained in recent years (notably in the small-maturity regime), providing a better understanding of the shapes of the volatility surface induced by rough volatility models, supporting their calibration power to SP500 option data. Rough volatility models also generate a local volatility surface, via the so-called Markovian projection of the stochastic volatility. We complement the existing results on implied volatility by studying the asymptotic behavior of the local volatility surface generated by a class of rough stochastic volatility models, encompassing the rough Bergomi model. Notably, we observe that the celebrated “1/2 skew rule” linking the short-term at-the-money skew of the implied volatility to the short-term at-the-money skew of the local volatility, a consequence of the celebrated “harmonic mean formula” of [Berestycki et al. (2002). Quantitative Finance, 2, 61–69], is replaced by a new rule: the ratio of the at-the-money implied and local volatility skews tends to the constant $1/(H+3/2)$ (as opposed to the constant 1/2), where H is the regularity index of the underlying instantaneous volatility process.