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Titolo:
On optimal portfolio choice under stochastic interest rates
Autore:
Lioui, A; Poncet, P;
Indirizzi:
ESSEC, Dept Finance, F-95021 Cergy, France ESSEC Cergy France F-95021ESSEC, Dept Finance, F-95021 Cergy, France Bar Ilan Univ, Dept Econ, IL-52900 Ramat Gan, Israel Bar Ilan Univ Ramat Gan Israel IL-52900 Econ, IL-52900 Ramat Gan, Israel Univ Paris 01, UFR06, Dept Gest, F-75231 Paris, France Univ Paris 01 Paris France F-75231 R06, Dept Gest, F-75231 Paris, France
Titolo Testata:
JOURNAL OF ECONOMIC DYNAMICS & CONTROL
fascicolo: 11, volume: 25, anno: 2001,
pagine: 1841 - 1865
SICI:
0165-1889(200111)25:11<1841:OOPCUS>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
DYNAMIC FUTURES MARKET; ASSET PRICING MODEL; CONTINGENT CLAIMS; TERM STRUCTURE; INCOMPLETE MARKETS; CONSUMPTION; ARBITRAGE; POLICIES; INVESTMENT; VALUATION;
Keywords:
portfolio choice theory; hedging; interest rate risk; financial futures; market price of risk;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Poncet, P ESSEC, Dept Finance, Ave Bernard Hirsch,BP 105, F-95021 Cergy, France ESSEC Ave Bernard Hirsch,BP 105 Cergy France F-95021 gy, France
Citazione:
A. Lioui e P. Poncet, "On optimal portfolio choice under stochastic interest rates", J ECON DYN, 25(11), 2001, pp. 1841-1865

Abstract

In an economy where interest rates and stock price changes follow fairly general stochastic processes, we analyze the portfolio problem of an investor endowed with a non-traded cash bond position. He can trade on stocks, theriskless asset and a futures contract written on the bond so as to maximize the expected utility of his terminal wealth. When the investment opportunity set is driven by an arbitrary number of state variables, the optimal portfolio strategy is known to contain a pure, preference free, hedge component, a speculative element and Merton-Breeden hedging terms against the fluctuations of each and every state variable. While the first two components are well identified and easy to work out, the implementation of the last ones is problematic as the investor must identify all the relevant state variables and estimate their distribution characteristics. Using the martingale approach, we show that the optimal strategy can be simplified to include, in addition to the pure hedge and speculative components, only two Merton-Breeden-type hedging elements, however large is the number of state variables. The first one is associated with interest rate risk and the second one with the risk brought about by the co-movements of the spot interest rate andthe market prices of risk. The implementation of the optimal strategy is thus much easier, as it involves estimating the characteristics of the yieldcurve and the market prices of risk only rather than those of numerous (a priori unknown) state variables. Moreover. the investor's horizon is shown explicitly to play a crucial role in the optimal strategy design, in sharp contrast with the traditional decomposition. Finally, the role of interest rate risk in actual portfolio risk management is emphasized. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 14/07/20 alle ore 11:58:06