arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1902.06294math.OCq-fin.PM
收藏

股利限制下的最优股利与资本注入

Optimal dividends and capital injection under dividend restrictions

Kristoffer Lindensjö, Filip Lindskog

摘要:

我们研究了一个奇异的随机控制问题所面临的保险公司,动态支付股息,并提高资本的存在的限制,盈余过程必须高于一个给定的股息支付障碍,以允许股息支付。如果盈余过程变为负值,并且注资成本成比例,则会发生破产。我们证明了以下策略之一是最优的:(i)支付股息和注入资本,以反映盈余过程在上限和0,这意味着破产永远不会发生。(ii)支付股息,以反映盈余过程中的上限障碍,从不注入资本-对应于吸收0 -这意味着破产发生在盈余首次达到零的时候。我们发现,如果资本注入的成本是低的,那么一个足够高的股息支付障碍将改变最优策略从类型(i)(无破产)到类型(ii)(破产)。此外,如果成本很高,那么最优策略是类型(ii),而不管股息支付障碍。不受控盈余过程是一个有漂移的Wiener过程。

英文摘要:

We study a singular stochastic control problem faced by the owner of an insurance company that dynamically pays dividends and raises capital in the presence of the restriction that the surplus process must be above a given dividend payout barrier in order for dividend payments to be allowed. Bankruptcy occurs if the surplus process becomes negative and there are proportional costs for capital injection. We show that one of the following strategies is optimal: (i) Pay dividends and inject capital in order to reflect the surplus process at an upper barrier and at 0, implying bankruptcy never occurs. (ii) Pay dividends in order to reflect the surplus process at an upper barrier and never inject capital --- corresponding to absorption at 0 --- implying bankruptcy occurs the first time the surplus reaches zero. We show that if the costs of capital injection are low, then a sufficiently high dividend payout barrier will change the optimal strategy from type (i) (without bankruptcy) to type (ii) (with bankruptcy). Moreover, if the costs are high, then the optimal strategy is of type (ii) regardless of the dividend payout barrier. The uncontrolled surplus process is a Wiener process with drift.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑