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21.
Attempts to characterize stock return predictability have resultedin little consensus on the important conditioning variables,giving rise to model uncertainty and data snooping fears. Weintroduce a new methodology that explicitly incorporates modeluncertainty by comparing all possible models simultaneouslyand in which the priors are calibrated to reflect economicallymeaningful information. Our approach minimizes data snoopinggiven the information set and the priors. We compare the priorviews of a skeptic and a confident investor. The data implyposterior probabilities that are in general more supportiveof stock return predictability than the priors for both typesof investors. 相似文献
22.
We investigate the problem of optimal dividend distribution for a company in the presence of regime shifts. We consider a company whose cumulative net revenues evolve as a Brownian motion with positive drift that is modulated by a finite state Markov chain, and model the discount rate as a deterministic function of the current state of the chain. In this setting, the objective of the company is to maximize the expected cumulative discounted dividend payments until the moment of bankruptcy, which is taken to be the first time that the cash reserves (the cumulative net revenues minus cumulative dividend payments) are zero. We show that if the drift is positive in each state, it is optimal to adopt a barrier strategy at certain positive regime-dependent levels, and provide an explicit characterization of the value function as the fixed point of a contraction. In the case that the drift is small and negative in one state, the optimal strategy takes a different form, which we explicitly identify if there are two regimes. We also provide a numerical illustration of the sensitivities of the optimal barriers and the influence of regime switching. 相似文献
23.
Using a comprehensive data set on issuances and holdings of contingent convertible debt instruments (CoCos) issued by European banks, we investigate who invests in European CoCos. The results indicate that most European CoCos are not directly held by euro area investors. Foreign investors outside the euro area and investment funds located in Ireland and Luxembourg hold the large majority. Euro area banks, insurers and pension funds only have very limited direct exposures. Households in the euro area hold almost no direct positions in European CoCos, although there could be indirect holdings through non-euro area entities and euro area investment funds. Concerns for contagion through cross-holdings of CoCos by banks seem to be unwarranted. 相似文献
24.
A call for an increased use of standard contracts in public–private partnerships (PPPs) for infrastructure development is noticeable in practice. These contracts are expected to simplify and improve procurement by creating opportunities for learning, lower transaction costs, and better competition. This paper delineates standard contracts in PPP as a new venue for research and unfolds their potential impact. Here lies an important challenge since the benefits of standardization are not as straightforward as they look at first sight, particularly when taking into account the tension between the powerful, control-oriented role of contracting authorities and the need for contingent, informal contracting. 相似文献
25.
Guido Baltussen G. Thierry Post Martijn J. van?den Assem Peter P. Wakker 《Experimental Economics》2012,15(3):418-443
Experiments frequently use a random incentive system (RIS), where only tasks that are randomly selected at the end of the experiment are for real. The most common type pays every subject one out of her multiple tasks (within-subjects randomization). Recently, another type has become popular, where a subset of subjects is randomly selected, and only these subjects receive one real payment (between-subjects randomization). In earlier tests with simple, static tasks, RISs performed well. The present study investigates RISs in a more complex, dynamic choice experiment. We find that between-subjects randomization reduces risk aversion. While within-subjects randomization delivers unbiased measurements of risk aversion, it does not eliminate carry-over effects from previous tasks. Both types generate an increase in subjects’ error rates. These results suggest that caution is warranted when applying RISs to more complex and dynamic tasks. 相似文献
26.
Geographical Indications (GIs) are increasingly important instruments of agricultural and food regulations and are growing as contentious issues in trade negotiations and disputes. GIs can improve welfare but they can also be a protectionist instrument. The EU has the most GIs in the world, but they are concentrated in the south of the EU. Even excluding wine, there are seven times more food GIs per capita in the southern EU Member States than in other EU Member States. This note discusses several factors which may explain the geographic concentration of GIs in the south of the EU. 相似文献
27.
Lizbeth Burgos Ochoa Judith J.M. Rijnhart Brenda W. Penninx Klaas J. Wardenaar Jos W.R. Twisk Martijn W. Heymans 《Statistica Neerlandica》2020,74(1):72-91
Previous studies have discouraged the use of the Cox proportional hazards (PH) model for traditional mediation analysis as it might provide biased results. Accelerated failure time (AFT) models have been proposed as an alternative for Cox PH models. In addition, the use of the potential outcomes framework has been proposed for mediation models with time-to-event outcomes. The aim of this paper is to investigate the performance of traditional mediation analysis and potential outcomes mediation analysis based on both the Cox PH and the AFT model. This is done by means of a Monte Carlo simulation study and the illustration of the methods using an empirical data set. Both the product-of-coefficients method of the traditional mediation analysis and the potential outcomes framework yield unbiased estimates with respect to their own underlying indirect effect value for simple mediation models with a time-to-event outcome and estimated based on Cox PH or AFT. 相似文献
28.
In this paper, we present an algorithm for pricing barrier options in one‐dimensional Markov models. The approach rests on the construction of an approximating continuous‐time Markov chain that closely follows the dynamics of the given Markov model. We illustrate the method by implementing it for a range of models, including a local Lévy process and a local volatility jump‐diffusion. We also provide a convergence proof and error estimates for this algorithm. 相似文献
29.
Using a repeat-sales methodology, this paper finds that estimates of house price risk based on aggregate house price indices substantially underestimate the true size of house price risk. This is the result of the fact that aggregate house price indices average away the idiosyncratic volatility in house prices. Additional results show that the idiosyncratic risk exceeds the hedging benefits of home ownership. These results imply that for many home owners, owning a house may well add more price risk than it hedges away. These findings are based on a detailed dataset of individual housing transactions in the Netherlands. 相似文献
30.
In this research, we investigate whether a positive relationship between life satisfaction and self-employment (versus paid employment) exists while simultaneously considering two occupational dimensions: white-collar versus blue-collar work and high-skilled versus low-skilled work. Using Eurobarometer data for a large number of European countries (2008–2012), our findings confirm that self-employed workers are more satisfied with their lives than paid employees are. A life satisfaction premium is also found when the self-employed and paid employees are compared within similar occupations in terms of collar type and skill level. Finally, self-employment can help to overcome low life satisfaction scores associated with blue-collar and low-skilled work. 相似文献