Interview with SFI Prof. Thomas Giroux

Learn more about SFI Prof. Thomas Giroux, ETH Zurich, in our interview below
Datum24 Feb. 2026
KategorieNews

Where did you grow up?  
In Chambery, Savoie, France.


What were your hobbies as a child? 
Skiing, cycling, and mountaineering. 


Where did you go to university? 
At ENS Paris-Saclay, ENSAE.


Where did you do your PhD? 
At the Institut Polytechnique Paris (IP Paris).


Do you have any anecdotes or memories from your PhD? 
I worked part-time for an asset management company. While it was challenging timewise, it was even more rewarding. Building bridges between practice and academia in sustainable finance is dear to me, as I think it adds a lot of value to the role of academic research in this field.


Who are some of the economists, scholars, or mentors who have had an important influence on your work? 
Some of the people who have influenced me are my former professors, O.D. Zerbib and Peter Tankov, who introduced me to the field of sustainable finance; my PhD supervisor, Prof. Christian Y. Robert, who guided me throughout my PhD journey; my co-authors, Profs. Caroline Flammer and Geoffrey Heal, with whom I've enjoyed a wonderful and trusting collaboration; as well as my former colleagues at Mirova: Philippe Zaouati, Hervé Guez, Mathilde Dufour, and Manuel Coeslier. I also admire the work of Profs. Zacharias Sautner and Johannes Stroebel, among others in sustainable finance.


What led you to start researching on sustainable finance, impact investing, and risk modelling? 
My sincere wish is to help address some of society's most pressing challenges by leveraging my skills, primarily in economics, finance, and applied mathematics.


What current research work are you really excited about and why? 
I am especially excited about my ongoing research on impact investing in private markets, particularly through the lens of blended finance. Beyond the wonderful collaboration with my co-authors, this work has already shown strong relevance for practitioners. A new partnership with the SDG Impact Finance Initiative (SIFI) and Tameo (and, hopefully, more to come) will further expand what we can study by providing new data, broader connections, and opportunities to conduct field experiments.


You were recently awarded the Moskowitz Prize and the Institut Bachelier / Banque de France Best Young Researcher in Sustainable Finance award. Congratulations on these great achievements! What research projects were particularly interesting for the Moskowitz and Banque de France juries? 
The Moskowitz Prize recognized the "Blended Finance" paper, thus this research stream played a key role in motivating the award. More broadly, in the case of the Banque de France award, my additional work on the measurement and pricing of sustainability-related risks in financial markets was also an important factor.


What attracted you to Switzerland, ETH and SFI? 
Coming from the French Alps, Switzerland feels close to home for me. It also provides very attractive conditions for research, and the pluridisciplinarity of ETH is, in my view, a major asset when studying the intersections of several fields, such as climate, nature, and finance. I have also long followed SFI's contributions to sustainable finance with great interest.


What are you most looking forward to as part of the SFI community? 
Being part of a scientific community with regular exchanges and colleagues working on similar topics is extremely valuable to me. That is exactly what I am looking forward to.


Do you have a productivity habit or routine that works well for you? 
I often work at night. Likely not a healthy recommendation. 


What languages do you speak? 
French, English, and hopefully soon, German (I learned it at school but one does not get many chances to practice in Paris or at academic conferences).


Tell us something exciting that happened to you in the last five to ten years? 
I had my first child in 2023, and if all goes well, I should have had my second child by the time this interview is published! This is by far the most exciting thing that has happened to me, despite all the additional workload. 


What do you do in your spare time? 
I run, hike, and ski. I don't leave the mountains too often.


What is your favorite holiday destination?
Home, luckily!


What is your favorite quote? 
"L'important c'est de quitter le monde meilleur qu'on y est entré" (source unknown). Not sure I will manage to live up to this, but I hope to contribute as much as I can.