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Advisors, Scholars, and Fellows

Center for Financial Research

Last Updated: September 5, 2023

Research Fellows

Allen Berger Allen N. Berger is the H. Montague Osteen, Jr., Professor in Banking and Finance in the Finance Department, Darla Moore School of Business, University of South Carolina, since 2008. He is also Ph.D. coordinator of the Finance Department, and Carolina Distinguished Professor of the University. Outside the University, he is currently Vice President of the Financial Intermediation Research Society (FIRS), and will be its 2021 Conference Coordinator, and 2022 Program Chair and President. He is also Senior Fellow at the Wharton Financial Institutions Center and Fellow of the European Banking Center, and serves on the editorial boards of eight professional finance and economics journals. Professor Berger was editor of the Journal of Money, Credit, and Banking from 1994-2001, has co-edited seven special issues of various professional journals, and has co-organized a number of professional research conferences. He also co-edited all three editions of the Oxford Handbook of Banking, 2010, 2015, and 2019. His research covers a variety of topics related to financial institutions. He is co-author of Bank Liquidity Creation and Financial Crises (2016, Elsevier), as well as TARP and other Bank Bailouts and Bail-Ins around the World: Connecting Wall Street, Main Street, and the Financial System (2020, Elsevier).

He has published over 150 professional articles, including about 120 in refereed journals. These include papers in top finance journals, Journal of Finance, Journal of Financial Economics, Review of Financial Studies, Journal of Financial and Quantitative Analysis, Review of Finance, Journal of Financial Intermediation and Journal of Corporate Finance; top economics journals, Journal of Political Economy, American Economic Review, Review of Economics and Statistics, and Journal of Monetary Economics; and other top professional business journals, Management Science, Journal of Business, and European Journal of Operational Research. His research has been cited over 80,000 times according to Google Scholar, including 29 different articles with over 1,000 citations. He has given invited keynote addresses on five continents, and has been a visiting scholar at several Federal Reserve Banks and central banks of other nations.

Professor Berger received the University of South Carolina Educational Foundation Award for Research in Professional Schools for 2018, and was named Professor of the Year for 2015-2016 by the Darla Moore School of Business Doctoral Students Association. He also has won a number of best paper awards from different journals and finance conferences. He was Secretary/Treasurer, Financial Intermediation Research Society (FIRS) from 2008-2016; and Senior Economist from 1989 to 2008 and Economist from 1982-1989 at the Board of Governors of the Federal Reserve System. He received a Ph.D. in Economics from the University of California, Berkeley in 1983, and a B.A. in Economics from Northwestern University in 1976.

Alireza Ebrahim Dr. Alireza Ebrahim is a Senior Financial Economist in the Commercial Credit Risk Analysis Division within Supervision Risk and Analysis of the Office of the Comptroller of the Currency (OCC). His practice in risk modeling and management is primarily focused on operational risk, credit risk, Model Risk Management, Artificial Intelligence, and Machine Learning. Dr. Ebrahim's research interests include banking, risk management, risk modeling, corporate governance, and corporate finance. Dr. Ebrahim joined the OCC in 2011 as a Financial Economist in the Enterprise Risk Analysis Division. He holds a doctorate degree in Finance from University of Tennessee and a master's degree in Economics from Vanderbilt University

Jeremy Fox Jeremy Fox is the Shatto Endowed Chair of Economics at Rice University. Fox specializes in empirical industrial organization. Other fields of research include econometrics and labor economics. Before joining Rice as a professor, Fox worked at the University of Chicago and the University of Michigan.

Fox has worked on industries such as mobile phones, automobile manufacturing, and venture capital. He has also worked on firm productivity and labor market issues. Fox is known for his work on estimating models of two-sided matching games and of demand.

Ryan Hess Ryan Hess is a fifth-year accounting Ph.D. student at the University of Texas at Austin. His current research focuses on income and non-income corporate taxation as well as tax avoidance and public policy. He was honored with the Fred Moore Assistant Instructor Award for Teaching Excellence for his instruction of the Introduction to Taxation course.

Ryan worked in Deloitte’s business tax services group for several years prior to his doctoral work. He holds a Master of Accounting degree from the University of Utah where he also earned an undergraduate degree in accounting.

Leonard Kiefer

Leonard (Len) Kiefer is an economist who helps people understand what’s going on in the economy, housing, mortgage markets. Len joined Freddie Mac in 2009, and has served as Deputy Chief Economist since December 2012. Len is responsible for primary and secondary mortgage market analysis and research, macroeconomic analysis and forecasting.

Prior to joining Freddie Mac, Len was an assistant professor at Texas Tech University in Lubbock, Texas where he conducted research on macroeconomics and monetary policy. He has also taught economics at The Ohio State University and finance at George Mason University.

Kiefer holds a B.A. in economics from the University of Kentucky, and a PhD from The Ohio State University. Len is a member of the American Real Estate and Urban Economics Association (AREUEA) and the National Association for Business Economics (NABE).

Kristoph Kleiner

Kristoph Kleiner is an Associate Professor of Finance at Indiana University. Prior to starting at Indiana University, he completed his PhD at Duke University and interned with the Federal Reserve Bank of New York and the Federal Reserve Board. He is the recipient of awards for research, teaching, and service, including most recently: the 2022 Best Paper at the University of Texas AIM Conference, the 2022 Best Discussant at the Craig Holden Memorial Conference, the 2022 Kelley School of Business Doctoral Teaching Award, and the 2021 Distinguished Referee Award by the Review of Financial Studies.

Kristoph specializes in empirical corporate finance research with a particular focus on two issues: (i) identifying and developing talent in entrepreneurs, bankers, and managers, and (ii) designing debt relief policies for households and firms. His research has been published in the Journal of Finance, Journal of Financial Economics, and Review of Financial Studies. In addition to research, Kristoph has developed new class curriculums including a PhD course called Financing Innovation, Labor, and Households as well as undergraduate and graduate courses in Fintech and Machine Learning.

Song Ma Song Ma is an Assistant Professor of Finance at Yale School of Management (SOM). He is also an affiliated faculty member at Yale Law School Center for the Study of Corporate Law and Yale SOM Program on Entrepreneurship. He joined Yale SOM Faculty in 2016 after receiving his PhD in Finance from Duke University’s Fuqua School of Business.

Professor Ma’s main research interests are corporate finance, entrepreneurial finance, innovation, industrial organization, and business law. His research has been featured in top academic journals such as the Journal of Finance, Journal of Financial Economics, and Review of Financial Studies, and won numerous research awards. His research has also been referenced by legislator and policy makers around the world, including the Federal Trade Commission, EU Competition Commission, and UK Competition and Markets Authority.

Tom Mayock Tom Mayock is an Assistant Professor of Economics at the University of North Carolina at Charlotte. He joined the department of economics in the Belk College of Business at UNC Charlotte in the fall of 2016. He received a Ph.D. in economics from Florida State University in 2009 and a Bachelor of Science in economics from Penn State University in 2003. Prior to joining UNC Charlotte, he was a senior financial economist at the Office of the Comptroller of the Currency and an assistant professor at Montclair State University. Tom’s primary research interests are urban economics, public economics, real estate and credit risk. His work has appeared in the Journal of Urban Economics, the Journal of Housing Economics, Real Estate Economics, Regional Science and Urban Economics, the Journal of Real Estate Finance and Economics, Public Finance Review, Land Economics and the Journal of Banking and Finance. Some of Tom’s research projects investigate the relationship between school segregation and the housing stock, mortgage contract choice, the role of large-scale developments in the mortgage crisis and the financial returns to homeownership.

Joseph Nichols

Joseph Nichols is a Principal Economist with the Federal Reserve Board and is a respected expert on the commercial real estate market, commercial mortgage credit risk, and the financial institutions that originate and service commercial mortgages. His research has been published in the Review of Financial Studies, the Journal of Money Credit and Banking, the Journal of Urban Economics, the Journal of Real Estate Finance and Economics, the Journal of Financial Services Research, and other outlets. Dr. Nichols has contributed to several significant policy projects, including the develop of CRE credit risk models for the Dodd-Frank Act Stress Tests, design of the section of the TALF program for the CMBS and the FR Y-14 supervisory data collection. In 2021 he served on AREUEA Women in Real Estate Network (WREN) committee and has participated in Federal Reserve Board mentoring programs. He earned his PhD from the University of Maryland in 2005 and held doctoral student internships at both the Congressional Budget Office and the Office of Management and Budget. He received a Masters degree in Operations Research in 1997 and Bachelors in 1994 from The George Washington University.

Anna-Leigh Stone

Lynn Shibut is an economist who focuses on bank regulation. Her current research agenda is centered on bank failure, failed bank resolution, and losses on defaulted loans. She spent most of her career working at bank regulators but is now working as an independent researcher.

While at the FDIC, her work included not only economic research, but also operational work such as reporting, program analysis and review, financial analysis, operations research, simulations, and program setup and related business process development and IT development. Her research often connects academic concepts and theories to the practical realities faced by bank regulators.

Paul Soto

Paul E. Soto is a Senior Economist with the Federal Reserve Board. His main research interests are banking, financial economics, natural language processing, and machine learning. His research has been published in Management Science, the Journal of International Economics, and the Journal of Financial Services Research. He has also taught courses on text analysis and financial analytics at the University of Maryland's Smith School of Business. Prior to joining the Federal Reserve, he was an economist in the Center for Financial Research at the Federal Deposit Insurance Corporation. He earned his bachelor’s degree in Applied Mathematics from the University of California Berkeley, his master’s from the Barcelona School of Economics, and his PhD from the University of Pompeu Fabra.

Anna-Leigh Stone

Anna-Leigh Stone, Ph.D., is an associate professor of finance and the Hackney Family Research Fellow in Samford University's Brock School of Business. Stone’s research interests include banking, specifically banking regulations and deposit insurance, as well as the liquidity policies of firms.

Her research has been published in the Journal of Banking & Finance, Financial Review, Finance Research Letters, The Quarterly Journal of Finance, Journal of Financial Research, and the Journal of Macroeconomics. She has presented her work at the annual meetings of regional and national organizations, including the Financial Management Association, the Southern Finance Association, the Midwest Finance Association, and the Eastern Finance Association. Her research has also been featured in Vox and Bloomberg. She received the 2020 Brock School of Business Outstanding Research Award.

Stone holds a Ph.D. in Finance from the University of Alabama where she also earned a Master of Science in Finance, Master of Arts in Economics, and Bachelor of Science in Quantitative Finance.

Emilia Vähämaa

Emilia Vähämaa is the Wärtsilä Associate Professor of Finance at Hanken School of Economics in Finland. Previously, she has held visiting appointments at Harvard University, Alliance Manchester Business School of the University of Manchester, and the University of Central Florida. Professor Vähämaa currently serves as a board member of the Nasdaq Nordic Foundation and the Nordic Corporate Governance Network, and she is an Associate Editor of the International Review of Economics and Finance and a member of the editorial advisory board of Managerial Finance.

Professor Vähämaa’s research interests lie in the areas of sustainable finance, corporate governance, and banking. Her research has been published in peer-reviewed journals such as the Journal of Business Ethics, Journal of Business Research, Journal of Financial Services Research, Journal of Economics and Business, Accounting Horizons, and Finance Research Letters.

Professor Vähämaa earned her Ph.D. in Finance from the University of Vaasa, Finland.

Sami Vähämaa

Sami Vähämaa is a Professor of Accounting and Finance, the Head of the Finance Group, and the Chairman of the University Collegium at the University of Vaasa in Vaasa, Finland. He is also affiliated with the University of Turku and the Kiel Institute for the World Economy, and he has previously held visiting appointments at the University of Central Florida, Bentley University, Florida Atlantic University, Alliance Manchester Business School of the University of Manchester, Deusto Business School, and the European Central Bank.

Professor Vähämaa’s main research interests currently include financial institutions, female leadership, corporate governance, and corporate social responsibility. He has published over 40 articles in peer-reviewed finance, accounting, and business journals such as the Journal of Banking and Finance, Journal of Business Ethics, Journal of Business Finance & Accounting, Journal of Empirical Finance, Journal of Business Research, Accounting Horizons, Journal of Financial Services Research, and The Financial Review. He currently serves as the editor-in-chief of the Nordic Journal of Business and as an editorial board member of Corporate Governance: An International Review.

In addition to citations in academic journals, Professor Vähämaa’s research has been discussed or cited in the reports and publications of the European Parliament, the European Commission, the Prime Minister’s Office of Finland, the Finnish Ministry of Social Affairs and Health, the European Central Bank, the Basel Committee on Banking Supervision, the Bank of England, the Office of the Comptroller of the Currency (OCC), the Bank of Japan, and the Reserve Bank of India. Professor Vähämaa’s research has also been featured in prominent media outlets such as The Wall Street Journal, The New York Times, Forbes, American Banker, Institutional Money, Business Insider Deutschland, and all main media outlets in Finland.