Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/257856 
Year of Publication: 
2019
Citation: 
[Journal:] Risks [ISSN:] 2227-9091 [Volume:] 7 [Issue:] 1 [Article No.:] 18 [Publisher:] MDPI [Place:] Basel [Year:] 2019 [Pages:] 1-17
Publisher: 
MDPI, Basel
Abstract: 
As is well-known, the benefit of restricting Lévy processes without positive jumps is the ' W,Z scale functions paradigm', by which the knowledge of the scale functions W,Z extends immediately to other risk control problems. The same is true largely for strong Markov processes X t , with the notable distinctions that (a) it is more convenient to use as 'basis' differential exit functions ?,d, and that (b) it is not yet known how to compute ?,d or W,Z beyond the Lévy, diffusion, and a few other cases. The unifying framework outlined in this paper suggests, however, via an example that the spectrally negative Markov and Lévy cases are very similar (except for the level of work involved in computing the basic functions ?,d. We illustrate the potential of the unified framework by introducing a new objective (33) for the optimization of dividends, inspired by the de Finetti problem of maximizing expected discounted cumulative dividends until ruin, where we replace ruin with an optimally chosen Azema-Yor/generalized draw-down/regret/trailing stopping time. This is defined as a hitting time of the 'draw-down' process Y t =sup 0=s=t X s -X t obtained by reflecting X t at its maximum. This new variational problem has been solved in a parallel paper.
Subjects: 
first passage
drawdown process
spectrally negative process
scale functions
dividends
de Finetti valuation objective
variational problem
Persistent Identifier of the first edition: 
Creative Commons License: 
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Document Type: 
Article
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