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:

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:

Investment Timing and Market Feedback - with Stefan Hirth 

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

lassak@econ.au.dk