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Three Essays in Asset Pricing and Machine Learning
Three Essays in Asset Pricing and Machine Learning
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103159
- ISBN
- 9798283140704
- DDC
- 658
- 저자명
- Bini, Pietro.
- 서명/저자
- Three Essays in Asset Pricing and Machine Learning
- 발행사항
- [Sl] : Cornell University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 241 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Cong, Lin.
- 학위논문주기
- Thesis (Ph.D.)--Cornell University, 2025.
- 초록/해제
- 요약This dissertation investigates two significant areas in financial markets: the institutional dynamics of life insurance companies as major corporate bond investors, and the emerging challenges of large language models applications in finance. Together, these research streams contribute to our understanding of both traditional financial institutions and innovative technological disruptions in the field.In the first two chapters, I examine the critical role of life insurance companies as the largest domestic investors in the corporate bond market. Chapter 1 analyzes the implications of life insurance companies outsourcing their investment decisions to external advisers. Life insurers collectively outsource nearly $1 trillion in bond investments to a relatively small number of common external advisers, rais- ing important questions about systemic risk through portfolio concentration. My research finds that portfolio similarity is three times higher between insurer pairs with the same adviser, and 1.5 times higher between insurer-mutual fund pairs sharing an adviser. This interconnectedness has dual implications for systemic risk: while portfolio similarity amplifies fire sale risks when these institutions face common shocks (such as during monetary tightening cycles), it can also enhance financial stability when institutions face divergent shocks. During mutual fund outflows, insurers purchasing bonds sold by associated mutual funds provide a stabilizing effect on market prices.Chapter 2 (joint work with David Ng and Xing Zhou) studies the sources and frictions of alpha in insurance corporate bond portfolios. We study the perfor- mance of corporate bond portfolios of life insurers based on detailed daily portfo- lios that we construct from the combination of holdings and transaction data from regulatory filings. Our analysis reveals that, on average, life insurers' portfolios do not outperform the broader market, although performance varies significantly across insurers and over time. We find that investments in illiquid bonds can yield higher returns and alpha; however, regulatory restrictions on managing the duration gap between assets and liabilities offset these potential gains.Building on my interest in financial market dynamics, Chapter 3 (joint work with Will Cong, Xing Huang, and Lawrence J. Jin) extends my research into the frontier of financial technology by examining behavioral biases in Large Language Models (LLMs) when making economic and financial decisions. This work ad- dresses critical questions about the reliability of AI systems in financial applica- tions: Do generative AI models exhibit systematic behavioral biases similar to hu- mans? If so, how can these biases be mitigated? We conduct a comprehensive set of experiments-originally designed to document human biases-on prominent LLM families with variations in model version and scale. Our findings reveal that for experiments concerning the psychology of preferences, LLM responses become increasingly irrational and human-like as models become more advanced or larger. Conversely, for experiments concerning the psychology of beliefs, the most advanced large-scale models frequently generate more rational responses. We further explore various methods for correcting these behavioral biases and find that prompting LLMs to make decisions according to the Expected Utility framework appears most effective.This dissertation contributes to both traditional finance literature on institutional investors and the emerging field of AI applications in finance, offering insights that enhance our understanding of financial market stability and the potential limitations of technological innovation in the sector.
- 일반주제명
- Finance
- 일반주제명
- Computer science
- 키워드
- Corporate bonds
- 키워드
- Insurance
- 키워드
- Machine learning
- 기타저자
- Cornell University Management
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
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■020 ▼a9798283140704
■035 ▼a(MiAaPQ)AAI31998422
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a658
■1001 ▼aBini, Pietro.▼0(orcid)0000-0002-8346-0533
■24510▼aThree Essays in Asset Pricing and Machine Learning
■260 ▼a[Sl]▼bCornell University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a241 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Cong, Lin.
■5021 ▼aThesis (Ph.D.)--Cornell University, 2025.
■520 ▼aThis dissertation investigates two significant areas in financial markets: the institutional dynamics of life insurance companies as major corporate bond investors, and the emerging challenges of large language models applications in finance. Together, these research streams contribute to our understanding of both traditional financial institutions and innovative technological disruptions in the field.In the first two chapters, I examine the critical role of life insurance companies as the largest domestic investors in the corporate bond market. Chapter 1 analyzes the implications of life insurance companies outsourcing their investment decisions to external advisers. Life insurers collectively outsource nearly $1 trillion in bond investments to a relatively small number of common external advisers, rais- ing important questions about systemic risk through portfolio concentration. My research finds that portfolio similarity is three times higher between insurer pairs with the same adviser, and 1.5 times higher between insurer-mutual fund pairs sharing an adviser. This interconnectedness has dual implications for systemic risk: while portfolio similarity amplifies fire sale risks when these institutions face common shocks (such as during monetary tightening cycles), it can also enhance financial stability when institutions face divergent shocks. During mutual fund outflows, insurers purchasing bonds sold by associated mutual funds provide a stabilizing effect on market prices.Chapter 2 (joint work with David Ng and Xing Zhou) studies the sources and frictions of alpha in insurance corporate bond portfolios. We study the perfor- mance of corporate bond portfolios of life insurers based on detailed daily portfo- lios that we construct from the combination of holdings and transaction data from regulatory filings. Our analysis reveals that, on average, life insurers' portfolios do not outperform the broader market, although performance varies significantly across insurers and over time. We find that investments in illiquid bonds can yield higher returns and alpha; however, regulatory restrictions on managing the duration gap between assets and liabilities offset these potential gains.Building on my interest in financial market dynamics, Chapter 3 (joint work with Will Cong, Xing Huang, and Lawrence J. Jin) extends my research into the frontier of financial technology by examining behavioral biases in Large Language Models (LLMs) when making economic and financial decisions. This work ad- dresses critical questions about the reliability of AI systems in financial applica- tions: Do generative AI models exhibit systematic behavioral biases similar to hu- mans? If so, how can these biases be mitigated? We conduct a comprehensive set of experiments-originally designed to document human biases-on prominent LLM families with variations in model version and scale. Our findings reveal that for experiments concerning the psychology of preferences, LLM responses become increasingly irrational and human-like as models become more advanced or larger. Conversely, for experiments concerning the psychology of beliefs, the most advanced large-scale models frequently generate more rational responses. We further explore various methods for correcting these behavioral biases and find that prompting LLMs to make decisions according to the Expected Utility framework appears most effective.This dissertation contributes to both traditional finance literature on institutional investors and the emerging field of AI applications in finance, offering insights that enhance our understanding of financial market stability and the potential limitations of technological innovation in the sector.
■590 ▼aSchool code: 0058.
■650 4▼aFinance
■650 4▼aComputer science
■653 ▼aBehavioral biases
■653 ▼aCorporate bonds
■653 ▼aInsurance
■653 ▼aLarge language models
■653 ▼aMachine learning
■690 ▼a0508
■690 ▼a0984
■690 ▼a0511
■690 ▼a0454
■71020▼aCornell University▼bManagement.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0058
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357270▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


