Dr. Voetmann focuses on cases that involve complex economic and financial issues. He has worked with clients and experts on securities cases and valuation disputes related to capital markets and financial institutions.

He has analyzed market efficiency, class certification, valuation, mergers and acquisitions, internal investigations, and damages across a variety of cases involving debt, equity, and derivative securities.

Dr. Voetmann has consulted on valuation issues related to mergers and acquisition disputes, appraisal actions, and other disputes involving valuation of companies, employee stock options, and minority interest. He has examined fairness opinions and analyzed the fair market value of privately held companies. He has worked with multiple experts and is experienced in all phases of litigation, including deposition, mediation, arbitration, and trial. His recent cases have involved investigating possible insider trading and analyzing valuations of target companies in mergers and acquisitions.

Dr. Voetmann’s securities experience includes Rule 10b-5 and Section 11/12 class actions, including those involving options and other derivative securities. In these cases, he has led large case teams that have addressed market efficiency, loss causation, and estimation of aggregate damages. His experience also includes calculating damages related to improper revenue recognition, bankruptcy, earnings restatements, material omissions, employee stock options, insider trading, private equity, and disputed merger terms.

His case experience covers a range of industries, including financial institutions, consumer products, telecommunications, technology, and manufacturing. He has directed research in various prominent matters, including In re AOL Time Warner Inc. Securities Litigation, In re Xcelera Securities Litigation, Metropolitan Creditors’ Trust et al. v. Ernst & Young, and In re Apollo Securities Litigation.

Dr. Voetmann has also authored a number of peer-reviewed publications in finance journals, including the Journal of Corporate Finance, Review of Finance, and the European Journal of Finance, and has authored a chapter on event studies in Financial Modeling. Prior to joining The Brattle Group, Dr. Voetmann was Managing Director at Finance Scholars Group and was formerly a principal at Cornerstone Research. He has taught undergraduate and graduate-level courses in corporate finance and security analysis at the Wharton School, University of Pennsylvania and is currently an Adjunct Professor at the University of San Francisco, where he teaches in the MBA program.

Personal Interests

Torben is an Adjunct Professor of Finance, The University of San Francisco, where he teaches an MBA finance course, “Capital Markets, and Investment Banking,” covering various law and finance topics including corporate governance, securities regulation, and equity and debt markets.

From 1998–2004 he was an Adjunct Professor of Finance at The Wharton School of the University of Pennsylvania, where he taught undergraduate and MBA finance courses, “Corporate Finance” and “Securities Analysis,” covering various finance topics including corporate finance, securities valuation, and financial modeling.

From 2000–2004, he was an Instructor at the New York Institute of Finance, where he taught market participants courses, “Financial Modeling,””Valuation,” and “Corporate Finance,” covering various finance topics including corporate finance, equity valuation, and financial engineering.

Outside of work, Torben enjoys orienteering, Bikram yoga, and running.


Report, March 2022; Rebuttal Report, July 2022; Joint Expert Report, August 2022; Trial Testimony, September 2022
Holly Southernwood v. Brambles LTD, File No. VID972/2018.
Report, October 2021; Deposition, April 2022.
Tim Walsh et al. v. Clifford M. Buchholz et al. Case number 0:19-cv-01856-DSD-HB.
Jury Trial, August 2021
United States of America v. Liu et al. Case No. 2:19-cr-00282.
Report, June 2021; Rebuttal Report, September 2021
Matthew Hall v. Arnold Block Leibler (A Firm), VID1010/2019.