Gracias por abrir nuevos caminos, Roboco! Estoy aprendiendo más sobre Money Management moderno esta semana que en varios años!!!
Me imagino que lo que pretendes al citar el tema del "Volatility-Induced Financial Growth" es que nos leamos este interesante libro:
M.A.H. Dempster, Gautam Mitra y Georg Pflug,
Quantitative Fund Management
Me llama mucho la atención a la que llegan los autores sobre el asunto:
In this paper we have established the surprising result that when asset returns are stationary ergodic, their volatility, together with any fixed-mix trading strategy, generates a portfolio growth rate in excess of the individual asset growth rates. As a consequence, even if the growth rates of the individual securities all have mean zero, the value of a fixed-mix portfolio tends to infinity with probability one. By contrast with the 25 years in which the effects of ‘volatility pumping’ have been investigated in the literature by example, our results are quite general. They are obtained under assumptions which accommodate virtually all the empirical market return properties discussed in the literature. We have in this paper also dispelled the notion that the demonstrated acceleration of portfolio growth is simply a matter of ‘buying lower and selling higher’. The example of section 3 shows that our result depends critically on rebalancing to an arbitrary fixed mix of portfolio proportions. Any such mix defines the relative magnitudes of individual asset returns realized from volatility effects. This observation and our analysis of links between growth, arbitrage and noise-induced stability suggest that financial growth driven by volatility is a subtle and delicate phenomenon.
Para los que quieran leer el paper extraído de ese libro podéis encontrarlo aquí:
http://www.cfr.statslab.cam.ac.uk/publi ... growth.pdf
Los autores afirman, si no he entendido mal, que sus resultados son válidos bajo el supuesto de que los rendimientos de los activos de la cartera son estacionarios. Siento no poder estar de acuerdo con ese supuesto pero es que en la práctica... las colas gordas están ahí esperándonos
Aún así, concepto muy interesante y profundo el del volatility pumping, habrá que estudiarlo con detenimiento.
Saludos,
X-Trader