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Portfolio Selection with Transaction Costs

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Davis, M. H. A., Norman, A. R.·1990·Mathematics of Operations Research

Abstract

In this paper, optimal consumption and investment decisions are studied for an investor who has available a bank account paying a fixed rate of interest and a stock whose price is a log-normal diffusion. This problem was solved by Merton and others when transactions between bank and stock are costless. Here we suppose that there are charges on all transactions equal to a fixed percentage of the amount transacted. It is shown that the optimal buying and selling policies are the local times of the two-dimensional process of bank and stock holdings at the boundaries of a wedge-shaped region which is determined by the solution of a nonlinear free boundary problem. An algorithm for solving the free boundary problem is given.

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Metadata

Authors
Davis, M. H. A., & Norman, A. R.
Venue
Mathematics of Operations Research
Published
1990-11
Volume
15
Issue
4
Pages
676-713
ISSN
  • 0364-765X (ISSN-L)
  • 1526-5471
OpenAlex
W2115580984
Cited by
1,311
References
0
FWCI
18.44
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Portfolio Selection with Transaction Costs. https://app.cochat.ai/papers/10.1287/moor.15.4.676
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Davis, M. H. A., & Norman, A. R. (1990). Portfolio Selection with Transaction Costs. Mathematics of Operations Research. https://doi.org/10.1287/moor.15.4.676

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