On optimal cash management under a stochastic volatility model

Na Song*, Wai Ki Ching, Tak Kuen Siu, Cedric Ka Fai Yiu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We discuss a mathematical model for optimal cash management. A firm wishes to manage cash to meet demands for daily operations, and to maximize terminal wealth via bank deposits and stock investments that pay dividends and have uncertain capital gains. A Stochastic Volatility (SV) model is adopted for the capital gains rate of a stock, providing a more realistic way to describe its price dynamics. The cash management problem is formulated as a stochastic optimal control problem, and solved numerically using dynamic programming. We analyze the implications of the heteroscedasticity described by the SV model for evaluating risk, by comparing the terminal wealth arising from the SV model to that obtained from a Constant Volatility (CV) model.

Original languageEnglish
Pages (from-to)81-92
Number of pages12
JournalEast Asian Journal on Applied Mathematics
Issue number2
Publication statusPublished - May 2013


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