Abstract
We prove that zero-sum Dynkin games in continuous time with partial and asymmetric information admit a value in randomised stopping times when the stopping payoffs of the players are general càdlàg measurable processes. As a by-product of our method of proof we also obtain existence of optimal strategies for both players. The main novelties are that we do not assume a Markovian nature of the game nor a particular structure of the information available to the players. This allows us to go beyond the variational methods (based on PDEs) developed in the literature on Dynkin games in continuous time with partial/asymmetric information. Instead, we focus on a probabilistic and functional analytic approach based on the general theory of stochastic processes and Sion’s min-max theorem (Pacific J. Math. 8 (1958) 171–176). Our framework encompasses examples found in the literature on continuous time Dynkin games with asymmetric information and we provide counterexamples to show that our assumptions cannot be further relaxed.
Funding Statement
The first author was supported by the EPSRC Grant EP/R021201/1.
Acknowledgements
We like to thank an anonymous referee who pointed us to the existence of optimal strategies and suggested the equivalence of our topology with the one used by Baxter and Chacon [3] and Meyer [33] (see our Lemma 5.18).
Citation
Tiziano De Angelis. Nikita Merkulov. Jan Palczewski. "On the value of non-Markovian Dynkin games with partial and asymmetric information." Ann. Appl. Probab. 32 (3) 1774 - 1813, June 2022. https://doi.org/10.1214/21-AAP1721
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