6 resultados para Sharpe ratio

em Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco


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This paper analyzes the stationarity of this ratio in the context of a Markov-switching model à la Hamilton (1989) where an asymmetric speed of adjustment is introduced. This particular specification robustly supports a nonlinear reversion process and identifies two relevant episodes: the post-war period from the mid-50’s to the mid-70’s and the so called “90’s boom” period. A three-regime Markov-switching model displays the best regime identification and reveals that only the first part of the 90’s boom (1985-1995) and the post-war period are near-nonstationary states. Interestingly, the last part of the 90’s boom (1996-2000), characterized by a growing price-dividend ratio, is entirely attributed to a regime featuring a highly reverting process.

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Gene-culture co-evolution emphasizes the joint role of culture and genes for the emergence of altruistic and cooperative behaviors and behavioral genetics provides estimates of their relative importance. However, these approaches cannot assess which biological traits determine altruism or how. We analyze the association between altruism in adults and the exposure to prenatal sex hormones, using the second-to-fourth digit ratio. We find an inverted U-shaped relation for left and right hands, which is very consistent for men and less systematic for women. Subjects with both high and low digit ratios give less than individuals with intermediate digit ratios. We repeat the exercise with the same subjects seven months later and find a similar association, even though subjects' behavior differs the second time they play the game. We then construct proxies of the median digit ratio in the population (using more than 1000 different subjects), show that subjects' altruism decreases with the distance of their ratio to these proxies. These results provide direct evidence that prenatal events contribute to the variation of altruistic behavior and that the exposure to fetal hormones is one of the relevant biological factors. In addition, the findings suggest that there might be an optimal level of exposure to these hormones from social perspective.

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As a necessary condition for the validity of the present value model, the price-dividend ratio must be stationary. However, significant market episodes seem to provide evidence of prices significantly drifting apart from dividends while other episodes show prices anchoring back to dividends. This paper investigates the stationarity of this ratio in the context of a Markov- switching model à la Hamilton (1989) where an asymmetric speed of adjustment towards a unique attractor is introduced. A three-regime model displays the best regime identification and reveals that the first part of the 90’s boom (1985-1995) and the post-war period are characterized by a stationary state featuring a slow reverting process to a relatively high attractor. Interestingly, the latter part of the 90’s boom (1996-2000), characterized by a growing price-dividend ratio, is entirely attributed to a stationary regime featuring a highly reverting process to the attractor. Finally, the post-Lehman Brothers episode of the subprime crisis can be classified into a temporary nonstationary regime.

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[EU]Lan honen helburu nagusia,Gipuzkoako udalen finantza kaudimena aztertzeaz gain, beraien arteko konparaketa bat egin ahal izatea zen. Beste modu batera esanda,egoera hobeagoan dauden udalak nortzuk diren identifikatu ahal izatea. Hasi aurretik bagenekien, ordea, udal baten finantza kaudimena ez dagoela faktore bat edo biren arabera soilik, eta gauza asko subjektiboak direla ere bai. Gainera, eragina duten baldintza guztiak kontuan hartzea ere zaila da. Kasu honetan, 9-10 adierazle aukeratu dira, ondoren udal bakoitzak besteekin konparatuz adierazle horretan lortutako zenbatekoa 1etik 10erako puntuazio batekin baloratu da, eta azkenik, udaletxe guztien ranking bat osatu da. Ondorengo lerroetan ikus daiteke ranking honen testuingurua,erabilitako metodologia eta egindako kalkuluen ondorio nagusiak ere.

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Gipuzkoako udalen finantza kaudimenari buruzko analisi bat burutu ondoren, hauen rankinga burutzea da GrAL honen helburu nagusia.

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[ES] El presente trabajo tiene como objeto el estudio de la eficiencia y persistencia de los rendimientos del total de fondos de inversión inmobiliaria españoles, desde el inicio de su actividad a finales de 1994 a agosto de 2012. Para este propósito se ha utilizado el alfa de Jensen, la ratio de Sharpe, y la aproximación propuesta por Carhart (1997). En cuanto a la eficiencia, la ratio de Sharpe presenta valores negativos en los tres primeros años de actividad de cada fondo y valores muy bajos o incluso negativos en los tres o cuatro últimos años. El indicador de Jensen muestra que la mayoría de los fondos presentan un rendimiento inferior al del mercado, aproximado mediante la rentabilidad de la vivienda y una media de la rentabilidad de todos los fondos inmobiliarios. Carteras de referencia vinculadas a los mercados de deuda o bolsa, no resultan significativas. En el análisis de la persistencia de los rendimientos se confirma su existencia a plazo de uno, dos, tres y cuatro años, para todos los fondos. La evidencia obtenida en nuestro trabajo para los fondos inmobiliarios en España, eficiencia inferior a la del mercado y persistencia en los rendimientos, nos permite confirmar la difícil situación que ha atravesado y en la que sigue inmersa este tipo de inversión colectiva, poniendo de manifiesto la necesidad y la urgencia de medidas impulsoras de su actividad.