Campbell, JohnPakes, ArielYang, Hanbin2024-06-0120242024-05-032024Yang, Hanbin. 2024. Essays in Finance and Industrial Organization. Doctoral dissertation, Harvard University Graduate School of Arts and Sciences.31293339https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37378796This dissertation explores the interaction of structural estimation in empirical industrial organization and applications in finance. In the first chapter, I introduce a dynamic model of transaction costs to estimate how much dispersion in 401(k) fees is explained by differences in markups between employer sponsors. In the second chapter, I introduce a model of private fund manager dynamics and investor allocation to study the value of relationships in private investments. The third chapter introduces an empirical model of portfolio allocation to study how beliefs and risk preferences drive variation in investor portfolios.application/pdfenEconomicsThesis or Dissertation2024-06-010009-0002-9916-8374