The Optimal Control of Government Stabilization Funds

We study the optimal control of a government stabilization fund, which is a mechanism to save money during good economic times to be used in bad economic times. The objective of the fund manager is to keep the fund as close as possible to a predetermined target. Accordingly, we consider a running co...

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Main Authors: Abel Cadenillas, Ricardo Huamán-Aguilar
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/8/11/1975
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author Abel Cadenillas
Ricardo Huamán-Aguilar
author_facet Abel Cadenillas
Ricardo Huamán-Aguilar
author_sort Abel Cadenillas
collection DOAJ
description We study the optimal control of a government stabilization fund, which is a mechanism to save money during good economic times to be used in bad economic times. The objective of the fund manager is to keep the fund as close as possible to a predetermined target. Accordingly, we consider a running cost associated with the difference between the actual fiscal fund and the fund target. The fund manager exerts control over the fund by making deposits in or withdrawals from the fund. The withdrawals are used to pay public debt or to finance government programs. We obtain, for the first time in the literature, the optimal band for the government stabilization fund. Our results are of interest to practitioners. For instance, we find that the higher the volatility, the larger the size of the optimal band. In particular, each country and state should have its own optimal fund band, in contrast to the “one-size-fits-all” approach that is often used in practice.
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spelling doaj.art-8dfe02f07e3f4d8e89230061da494a142023-11-20T20:00:11ZengMDPI AGMathematics2227-73902020-11-01811197510.3390/math8111975The Optimal Control of Government Stabilization FundsAbel Cadenillas0Ricardo Huamán-Aguilar1Department of Mathematical and Statistical Sciences, University of Alberta, Central Academic Building 639, Edmonton, AB T6G 2G1, CanadaDepartment of Economics, Pontificia Universidad Católica del Perú, Av. Universitaria 1801, San Miguel, Lima 32, PeruWe study the optimal control of a government stabilization fund, which is a mechanism to save money during good economic times to be used in bad economic times. The objective of the fund manager is to keep the fund as close as possible to a predetermined target. Accordingly, we consider a running cost associated with the difference between the actual fiscal fund and the fund target. The fund manager exerts control over the fund by making deposits in or withdrawals from the fund. The withdrawals are used to pay public debt or to finance government programs. We obtain, for the first time in the literature, the optimal band for the government stabilization fund. Our results are of interest to practitioners. For instance, we find that the higher the volatility, the larger the size of the optimal band. In particular, each country and state should have its own optimal fund band, in contrast to the “one-size-fits-all” approach that is often used in practice.https://www.mdpi.com/2227-7390/8/11/1975singular stochastic controlstochastic optimizationoptimal government stabilization fundmacrofinancequantitative risk management
spellingShingle Abel Cadenillas
Ricardo Huamán-Aguilar
The Optimal Control of Government Stabilization Funds
Mathematics
singular stochastic control
stochastic optimization
optimal government stabilization fund
macrofinance
quantitative risk management
title The Optimal Control of Government Stabilization Funds
title_full The Optimal Control of Government Stabilization Funds
title_fullStr The Optimal Control of Government Stabilization Funds
title_full_unstemmed The Optimal Control of Government Stabilization Funds
title_short The Optimal Control of Government Stabilization Funds
title_sort optimal control of government stabilization funds
topic singular stochastic control
stochastic optimization
optimal government stabilization fund
macrofinance
quantitative risk management
url https://www.mdpi.com/2227-7390/8/11/1975
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