Strategic Asset Allocation in Stochastic Environment and Incomplete Markets: Evidence on Horizon and Hedging Effects

نویسنده

  • Ahmad Telfah
چکیده

The paper analyzes optimal portfolio choice when the investment opportunity set is driven by multi-stochastic factors, namely; stochastic interest rates, stochastic volatility and stochastic inflation. The analysis is implemented in an incomplete market setting, where the number of risk sources is larger than the number of risky assets. The model segregates the effect of inflation from the other two state variables by deriving the dynamics in real wealth. The derived optimal portfolio shows that inflation plays a significant role in forming investors’ hedging demand through the correlation structure between inflation and assets held in the portfolio. Empirically, the paper calibrates the optimal portfolio choice for different classes of investors distinct by the degree of risk tolerance and investment horizon length in an attempt to mimic the popular financial planners’ advice. Calibration results show that the joint inclusion of stochastic interest rates, stochastic volatility and stochastic inflation introduces a plausible simultaneous resolution for both Samuelson puzzle and asset allocation puzzle of Canner, Mankiw, and Weil (1997). نمضو ةيرغتم ةئيب في ةيلالما ظفاحملل ةيجيتاترسلاا عيونتلا ةلماكلا يرغ قوسلا طورش : يرامثتسلاا قفلأا لوطو طوحتلا يرثأ ىلع ةلدلأا ضعب صخلم نم ددعب ةيرامثتسلاا صرفلا ىنحنم ابه ددحتي تيلا ةلالحا في ةيلالما ةظفلمحا رصانعل لثملأا رايتخلاا ةـقرولا هذـه شقانـت ةكرـلحا ةيئاوـشع وأ ةرقتـسلما يرـغ لـماوعلا . نوـكي تيـلا ةـلالحا في يأ مخضتلاو ةبذبذلاو ةدئافلا راعسأو مهسلأا راعسأ نم لك اهيـف يئاوـشع لكـشب كرحتـت . ددع قوفي ةرطاخلما رداصم ددع اهيف نوكي تيلاو ،ةماتلا يرغ قوسلا طورـش ضاترفاـب ليـلحتلا تم دـقل ةظفحملـل ةـ�وكلما ةرـطلخا ةيـلالما لوـصلأا . اعسأ نـم لـك نـع مخـضتلا رـثأ لـصف تم ،حترـقلما جذومنـلا في راعسأو ةرطلخا لوصلأا ر ةيقيقلحا ةورثلا ىوتسم في يرغتلا اهعبتي تيلا ةيكرلحا ةموظنلما قاقتشا للاخ نم ةدئاـفلا . ًامهم ًارثأ مخضتلل نأ لىإ ليلحتلا راشأ دقل طوحتلا تاياغل نورمثتسلما اهلميح تيـلا ةـظفلمحا نـم ءزـلجا ددـيح وـهف ةظفحملـل لثـملأا لكـشلا دـيدتح في . ب�الجا في تم ،يقيبطتلا في ،يرامثتسلاا قفلأا لوطو ةرطاخلما لبقت ةجرد في نوتوافتي نيذلا نيرمثتسلما نم ددعل ةيلالما ةظفحملل لثملأا رايتخلاا طابنتـسا ينيـلالما ينـططخلما رهـشأ ةداـعلا في اـبه يـصوي تيـلا ةيرامثتـسلاا ظفاـلمحا ةاـكالمح ةـلوامح . ضاترفا نأ لىإ جئاتنلا تراشأ ماع لكشب ا مخـضتلاو ةـبذبذلاو ةدئاـفلا رعـسل ةيئاوـشعلا ةكرـلح ) ةرطاخلما رداصم نم اهرابـتعاب ( تيلضعم نم لك لح في ديج لكشب مهاسي نوـسلماس (Samuelson Puzzle) لوـصلأا صيصتخ ةلضعمو (Asset Allocation Puzzle) ليوو وك�امو رنك اهيلإ راشأ تيلا (1997) .

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تاریخ انتشار 2006