Calculated Boldness: Optimizing Financial Decisions with Illiquid Assets

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Tác giả: Arseniy Akopyan, Alexei Kitaev, Stanislav Shalunov, Yakov Shalunov

Ngôn ngữ: eng

Ký hiệu phân loại: 332.6 Investment

Thông tin xuất bản: 2020

Mô tả vật lý:

Bộ sưu tập: Báo, Tạp chí

ID: 165887

Comment: 16 pages, 7 figuresWe consider games of chance played by someone with external capital that cannot be applied to the game and determine how this affects risk-adjusted optimal betting. Specifically, we focus on Kelly optimization as a metric, optimizing the expected logarithm of total capital including both capital in play and the external capital. For games with multiple rounds, we determine the optimal strategy through dynamic programming and construct a close approximation through the WKB method. The strategy can be described in terms of short-term utility functions, with risk aversion depending on the ratio of the amount in the game to the external money. Thus, a rational player's behavior varies between conservative play that approaches Kelly strategy as they are able to invest a larger fraction of total wealth and extremely aggressive play that maximizes linear expectation when a larger portion of their capital is locked away. Because you always have expected future productivity to account for as external resources, this goes counter to the conventional wisdom that super-Kelly betting is a ruinous proposition.
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