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2022 Fiscal Year Final Research Report

Numerical analysis of continuous-time portfolio optimization under no-short selling and leverage constraints

Research Project

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Project/Area Number 20K22130
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0107:Economics, business administration, and related fields
Research InstitutionTokyo University of Science

Principal Investigator

IEDA Masashi  東京理科大学, 経営学部ビジネスエコノミクス学科, 講師 (50876068)

Project Period (FY) 2020-09-11 – 2023-03-31
Keywords最適投資問題 / ハミルトン・ヤコビ・ベルマン方程式 / 数値解析
Outline of Final Research Achievements

We studied a continuous-time portfolio optimization problem under the no short-selling and leverage constraints. Our investment criterion is based on the error between the investor's wealth and the pre-determined target wealth level. We obtained the optimal strategy numerically using an improved version of the kernel-based collocation method. We applied it to the Japanese market data and quantitatively clarified the target wealth level attained stably in a given market environment.

Free Research Field

数理ファイナンス

Academic Significance and Societal Importance of the Research Achievements

本研究において付与した「空売り禁止・借入金上限設定」は、機関投資家などの実務家の資産運用においては必須条件である。しかし、これまでの連続時間ポートフォリオ最適化問題において上記の条件を明示的に組み込んだ論文はなかった。したがって本研究の成果は現実的に採用可能な連続時間最適ポートフォリオ戦略を提供する学術的成果であり、本研究をベースに社会実装への展開が期待できる。

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Published: 2024-01-30  

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