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Financial Bubble Riding and Beyond: A Study of Mean Field Games With Common Noise
Financial Bubble Riding and Beyond: A Study of Mean Field Games With Common Noise
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103003
- ISBN
- 9798280749368
- DDC
- 519
- 저자명
- Wang, Shichun.
- 서명/저자
- Financial Bubble Riding and Beyond: A Study of Mean Field Games With Common Noise
- 발행사항
- [Sl] : Princeton University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 256 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Tangpi, Ludovic.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2025.
- 초록/해제
- 요약This thesis develops the theory of Mean Field Games (MFGs) to study optimal liquidation in the presence of an asset bubble in a large-population setting. We propose a game-theoretic model on financial bubbles where inflows of traders and capital fuel its growth and excessive selling triggers its burst. To capture the inherent large-population characteristics, we introduce a class of MFGs with varying entry times. We prove the existence of a Mean Field Equilibrium (MFE) and demonstrate that equilibrium strategies naturally split into pre- and post-burst components, each part depending only on market information and whether the burst has occurred. Numerical simulations further illustrate the relationship between equilibrium strategies and bubble dynamics.Next, we extend our model to allow price-dependent entry, resulting in a random-entry MFG with common noise. This noise comes from two sources: the price dynamics and the unanticipated, exogenous burst time. As the model satisfies no monotonicity conditions, we establish the existence of MFE in the weak formulation by compactifying the domain of solution space via a discretization scheme, thereby obtaining a solution adapted to a filtration possibly larger than the natural filtration of the common noise. To avoid discretizing common noise and taking weak limits, for a special class of MFGs we present a simpler existence proof for strong equilibria (adapted to common noise) by an L 2 compactness criterion using Malliavin calculus. Notably, the drift and cost functionals are only required to be measurable with respect to the state variable.Lastly, we study the connections between single-period, discrete-time, and continuous-time MFE. We establish single-period MFE existence and prove a back propagation property of Lasry-Lions monotonicity through the value function. Then we construct multi-period MFE by recursively pasting the equilibria of suitable single-period games, and show that any sequence of multi-period discrete-time MFE has a subsequence converging to a continuous-time MFE as discretization mesh size approaches zero. Under Lasry-Lions monotonicity conditions, we further strengthen this tightness result by providing convergence rates.
- 일반주제명
- Applied mathematics
- 일반주제명
- Finance
- 일반주제명
- Computer science
- 키워드
- Common noise
- 키워드
- Financial bubble
- 키워드
- Mean Field Games
- 기타저자
- Princeton University Operations Research and Financial Engineering
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103003
■006m o d
■007cr#unu||||||||
■020 ▼a9798280749368
■035 ▼a(MiAaPQ)AAI31840477
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a519
■1001 ▼aWang, Shichun.▼0(orcid)0000-0001-7409-9363
■24510▼aFinancial Bubble Riding and Beyond: A Study of Mean Field Games With Common Noise
■260 ▼a[Sl]▼bPrinceton University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a256 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Tangpi, Ludovic.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2025.
■520 ▼aThis thesis develops the theory of Mean Field Games (MFGs) to study optimal liquidation in the presence of an asset bubble in a large-population setting. We propose a game-theoretic model on financial bubbles where inflows of traders and capital fuel its growth and excessive selling triggers its burst. To capture the inherent large-population characteristics, we introduce a class of MFGs with varying entry times. We prove the existence of a Mean Field Equilibrium (MFE) and demonstrate that equilibrium strategies naturally split into pre- and post-burst components, each part depending only on market information and whether the burst has occurred. Numerical simulations further illustrate the relationship between equilibrium strategies and bubble dynamics.Next, we extend our model to allow price-dependent entry, resulting in a random-entry MFG with common noise. This noise comes from two sources: the price dynamics and the unanticipated, exogenous burst time. As the model satisfies no monotonicity conditions, we establish the existence of MFE in the weak formulation by compactifying the domain of solution space via a discretization scheme, thereby obtaining a solution adapted to a filtration possibly larger than the natural filtration of the common noise. To avoid discretizing common noise and taking weak limits, for a special class of MFGs we present a simpler existence proof for strong equilibria (adapted to common noise) by an L 2 compactness criterion using Malliavin calculus. Notably, the drift and cost functionals are only required to be measurable with respect to the state variable.Lastly, we study the connections between single-period, discrete-time, and continuous-time MFE. We establish single-period MFE existence and prove a back propagation property of Lasry-Lions monotonicity through the value function. Then we construct multi-period MFE by recursively pasting the equilibria of suitable single-period games, and show that any sequence of multi-period discrete-time MFE has a subsequence converging to a continuous-time MFE as discretization mesh size approaches zero. Under Lasry-Lions monotonicity conditions, we further strengthen this tightness result by providing convergence rates.
■590 ▼aSchool code: 0181.
■650 4▼aApplied mathematics
■650 4▼aFinance
■650 4▼aComputer science
■653 ▼aCommon noise
■653 ▼aEquilibria pasting
■653 ▼aFinancial bubble
■653 ▼aMalliavin calculus
■653 ▼aMean Field Games
■653 ▼aVarying entry times
■690 ▼a0364
■690 ▼a0796
■690 ▼a0508
■690 ▼a0984
■71020▼aPrinceton University▼bOperations Research and Financial Engineering.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356614▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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