Welcome to my webpage!
I am an Assistant Professor of Finance at the University of Aarhus, Denmark.
My research interests are in applying information economics to questions in corporate finance, accounting, and financial markets.
I earned a Ph.D. in Economics at the Frankfurt School of Finance and Management.
News:
14/03/24: A new revised version of the paper Clustered IPOs as a Commitment Device is available.
27/02/24: I present "Wait, What? The Consequences of Not Disclosing Feedback-Stimulating Information" at the DISS Workshop. See the recording of it here.
20/02/24: The submission deadline for the Second Aarhus Workshop on Strategic Interaction in Corporate Finance is closed.
08/02/24: Stefan received DKK 66'000 from the Carlsberg Foundation to support the Second Aarhus Workshop on Strategic Interaction in Corporate Finance.
04/12/23: We decided to organize a Second Edition of the Aarhus Workshop on Strategic Interaction in Corporate Finance! Submission deadline February 20, 2024. Read more on the conference webpage.
16/08/2023: Thanks to all participants, discussants, and keynote speakers for contributing to an excellent Aarhus Workshop on Strategic Interaction in Corporate Finance
20/06/23: I am co-organizing the Aarhus Workshop on Strategic Interaction in Corporate Finance - We have finalized the program! Read more on the conference webpage.
20/06/23: I have updated my CV.
17/05/23: I present "I (don't) care about your belief: Managerial Overoptimism and Discretionary Disclosure" at the Accounting Research Workshop 2023
Older News can be found in the News Archive
Working Papers:
Theory: Examines the effect of managerial overoptimism on discretionary disclosure choices and market implications.
Empirics: Firms that strategically withhold CAPEX guidance are associated with lower informed trading measures, harming real decision-making through the feedback effect.
Theory: In the feedback context, voluntary disclosure helps disclosing but harms nondisclosing firms' investment making, resulting in efficiency losses if the latter dominates.
Theory: Timely clustering of IPOs by different underwriters generates a mutual disciplining effect, suggesting that underpricing levels might be a function of underwriter syndicate composition.
Work in Progress:
Academic Positions and Affiliations:
Aarhus University, Department of Economics and Business Economics
2021 - today, Assistant Professor of Finance
Danish Finance Institute
2021 - today, Research Fellow
Education:
Ph.D. in Economics
2021, Frankfurt School of Finance and Management, Germany
2019, Spring, visit at the Wharton School of the University of Pennsylvania, USA, Host: Itay Goldstein
M.Sc. in Economics and Finance
2015, University of Tübingen, Germany
B.A. in Banking
2012, Univerity of Applied Sciences (DHBW) Mosbach, Germany
Contact:
Matthias Lassak
Aarhus University
Department of Economics and Business Economics
Fuglesangs Allé 4
Building 2631, 130
8210 Aarhus V
Denmark