Skip to main content
About HEC About HEC
Summer School Summer School
Faculty & Research Faculty & Research
Master’s programs Master’s programs
Bachelor Programs Bachelor Programs
MBA Programs MBA Programs
PhD Program PhD Program
Executive Education Executive Education
HEC Online HEC Online
About HEC
Overview Overview
Who
We Are
Who
We Are
Egalité des chances Egalité des chances
HEC Talents HEC Talents
International International
Sustainability Sustainability
Diversity
& Inclusion
Diversity
& Inclusion
The HEC
Foundation
The HEC
Foundation
Campus life Campus life
Activity Reports Activity Reports
Summer School
Youth Programs Youth Programs
Summer programs Summer programs
Online Programs Online Programs
Faculty & Research
Overview Overview
Faculty Directory Faculty Directory
Departments Departments
Centers Centers
Chairs Chairs
Grants Grants
Knowledge@HEC Knowledge@HEC
Master’s programs
Master in
Management
Master in
Management
Master's
Programs
Master's
Programs
Double Degree
Programs
Double Degree
Programs
Bachelor
Programs
Bachelor
Programs
Summer
Programs
Summer
Programs
Exchange
students
Exchange
students
Student
Life
Student
Life
Our
Difference
Our
Difference
Bachelor Programs
Overview Overview
Course content Course content
Admissions Admissions
Fees and Financing Fees and Financing
MBA Programs
MBA MBA
Executive MBA Executive MBA
TRIUM EMBA TRIUM EMBA
PhD Program
Overview Overview
HEC Difference HEC Difference
Program details Program details
Research areas Research areas
HEC Community HEC Community
Placement Placement
Job Market Job Market
Admissions Admissions
Financing Financing
FAQ FAQ
Executive Education
Home Home
About us About us
Management topics Management topics
Open Programs Open Programs
Custom Programs Custom Programs
Events/News Events/News
Contacts Contacts
HEC Online
Overview Overview
Executive programs Executive programs
MOOCs MOOCs
Summer Programs Summer Programs
Youth programs Youth programs
PhD Program

PhD Dissertation Defense, Tianhao Yao, Finance

Congratulations to Dr Tianhao Yao, Finance, who successfully defended his doctoral dissertation at HEC Paris on June 6, 2023. Tianhao has accepted a position as Assistant Professor at Singapore Management University (SMU) starting in July. 

Specialization: Finance

Topic: Sustainable Finance and Asset Management 

Supervisor: Augustin Landier, Professor, HEC Paris 

Jury Members:

  • François Derrien, Professor, HEC Paris 
  • Alberta Di Giuli, Professor, ESCP Business School
  • Sébastien Pouget, Professor, Université Toulouse 1 Capitole
  • Paul Smeets, Professor, University of Amsterdam 
  • Daniel Schmidt, Associate Professor, HEC Paris, Co-Supervisor
  • Augustin Landier, Professor, HEC Paris, Supervisor

Abstract: 
The thesis contains three essays. In the first essay, I investigate whether ESG environmental, social and governance) education promotes ESG awareness and affects job choices. Exploiting the radual introduction of mandatory ESG courses in MBA curricula, I find that students who have taken mandatory ESG courses change their careers to work at firms with better ESG performance and in more sustainable sectors. School-level wages decrease after the introduction of mandatory ESG courses. Graduates with ESG education are more likely to state ESG concerns on their CVs, and are less (more) likely to leave better (worse) ESG-performing companies. My results imply that ESG teaching affects how students trade off pecuniary benefits and externalities, and thereby affects the matching between employees and firms. In the second essay, I investigate how sell-side analysts adjust their earnings forecasts following negative ESG incidents. I find that after learning about negative ESG news, analysts significantly downgrade their earnings forecasts over all horizons, including long-term horizons. Negative ESG incidents affect earnings forecasts at longer horizons than other types of corporate incidents. The negative revisions of earnings forecasts reflect expectations of lower future sales (rather than higher future costs). Forecast revisions explain most of the negative impacts of ESG incidents on firm value. In the third essay, I study product differentiation in the mutual fund industry. I design a model in which funds with heterogeneous perceived quality can choose their level of product differentiation. In equilibrium, high quality funds choose broad market designs appealing to many investors, while low quality funds adopt niche designs that investors either love or loath. Using as a measure of fund differentiation the degree of textual uniqueness of investment strategy description in fund prospectuses, I confirm empirically that funds with lower expected performance tend to differentiate more. I use the issuance of Morningstar rating as an exogenous shock to perceived quality to show the effect is causal.

Key words: Sustainable Finance, ESG, Mututal Funds.

Learn more about Tianhao on his personal website