Professor, Economics

Soumyo Sarkar Professor in Finance, Finance

Professor, Finance

Research Affiliate, Economic Science Institute, Chapman University

PhD in Economics, University of Iowa

BA in Economics, University of Northern Iowa

Behavioral and Experimental Finance

Behavioral and Experimental Economics

Game Theory

Prediction (Information) Markets

Asset Markets

Social Choice

Political Science and Election Forecasting

Best Paper Award - Experimental Economics, Accounting and Society: Conference in Memory of John Dickhaut, 2012

Best Young Researcher Paper Award - Experimental Economics, Accounting and Society: Conference in Memory of John Dickhaut, 2012

TIAA Institute Fellows Program, 2007

Nominee, Student's Choice Award for Faculty Excellence - University of Iowa Undergraduate Leadership Council, 2007

Faculty of the Month - Delta Sigma Pi, 2006

Certificate of Recognition - State of Iowa House of Representatives, 1998

Old Gold Summer Faculty Fellowship - University of Iowa, 1997

J.L. Kellogg Research Professorship - Northwestern University, 1992

J.L. Kellogg Research Professorship - Northwestern University, 1991

J.L. Kellogg Research Professorship - Northwestern University, 1990

Gruca, T. & Rietz, T. (2020). The 2020 (Re)Election According to the Iowa Electronic Markets: Politics, Pandemic, Recession, and/or Protests?. PS: Political Science & Politics. Early Access (October 20) pp. 1-5.

Berg, J. & Rietz, T. (2019). Longshots, Overconfidence and Efficiency on the Iowa Electronic Market. International Journal of Forecasting. 35 pp. 271-287.

Rietz, T., Schniter, E., Sheremeta, R. M., & Shields, T. (2018). Trust, Reciprocity and Rules. Economic Inquiry. 53 (3) pp. 1526-1542.

Berg, J. E., Penney, C. E., & Rietz, T. A. (2015). Partisan Politics and Political Prospects: Evidence from the Iowa Electronic Markets. PS: Political Science & Politics. 48 (4) pp. 573-578.

Kim, H. D., Castellanos, M., Hsu, M., Zhai, C., Rietz, T. A., & Diermeier, D. Mining Causal Topics in Text Data: Iterative Topic Modeling with Time Series Feedback. In Proceedings of ACM International Conference on Web Search and Data Mining 2013. pp. 885-890.

McCabe, K. A., Rietz, T. A., & Waymire, G. (2013). Experimental Economics, Accounting and Society: In Memory of John Dickhaut. Journal of Economic Behavior and Organization. 94 pp. 125-129.

Berg, J. E., Rietz, T. A., & Dickhaut, J. (2013). The “Play-Out” Effect and Preference Reversals: Evidence for Noisy Maximization. Journal of Economic Behavior and Organization. 94 pp. 160-171.

Rietz, T. A., Sheremeta, R. M., Shields, T. W., & Smith, V. L. (2013). Transparency, Efficiency and the Distribution of Economic Welfare in Pass-Through Investment Trust Games. Journal of Economic Behavior and Organization. 94 pp. 257-267.

Berg, J. E. & Rietz, T. A. (2013). Market Design, Manipulation and Accuracy in Political Prediction Markets: Lessons from the Iowa Electronic Markets. PS: Political Science & Politics. 47 (2) pp. 293-296.

Kim, H. D., Zhai, C., Rietz, T. A., Diermeier, D., Hsu, M., Castellanos, M., & Ceja, C. InCaToMi: Integrative Causal Topic Miner Between Textual and Non-textual Time Series Data. In Proceedings of ACM International Conference on Information and Knowledge Management 2012. pp. 2689-2691.

"Ownership Structure, Reputation Crises and Recovery: Theory and Experiment," Accepted Speaker at American Finance Association Annual Meeting, Chicago, Illinois, January 2021.

"The (Re)Election of 2020: Current Events and Historical Perspectives from the Iowa Electronic Market," Panelist at American Political Science Association Annual Conference, San Francisco, California, September 2020.

"The Effect of Default Target Date Funds on Retirement Savings Allocations," Guest/Invited Speaker at TIAA Institute Fellows Conference, New York, New York, June 2019.

"Ownership Structure, Reputation Crises and Recovery: Theory and Experiment," Accepted Speaker at North American Summer Meeting of the Econometric Society, Seattle, Washington, June 2019.

"Finance for non-financial managers in health care," Guest/Invited Speaker at University of Iowa, Iowa City, Iowa, March 2019.

"Valuing a New Product," Guest/Invited Speaker at Rockwell Collins, Cedar Rapids, Iowa, March 2018.

"Behavioral Finance," Guest/Invited Speaker at University of Iowa, Iowa City, Iowa, November 2016.

"Asset Allocation: Experiment and Field Data," Guest/Invited Speaker at TIAA-CREF Institute Fellows Symposium, New York, New York, June 2016.

"Offering vs. Choice in Retirement Plans: A Cross Sectional Analysis of Investment Menus with Traditional and Life-Cycle Mutual Funds," Guest/Invited Speaker at University of Iowa Economics Department Alumni Conference, Iowa City, Iowa, April 2016.

"Offering vs. Choice in Retirement Plans: A Cross Sectional Analysis of Investment Menus with Traditional and Life-Cycle Mutual Funds," Guest/Invited Speaker at TIAA-CREF Institute Fellows Symposium: Retirement Benefits for a 21st Century Workforce, New York, New York, October 2015.

Rietz, T. (Co-Principal), Principal Investigator(s): McDonald, R., Richardson, D., & Kam, T. Heterogeneity, Financial Literacy and Asset Allocation: A Study using Experimental and Field Data. TIAA-CREF Research Institute. Funded. September 2014 - June 2016.

Rietz, T. (Co-Principal), Principal Investigator(s): Noe, T. & Rebello, M. Firm Reputation Formation and Redemption: Theory and Experiment. The Oxford University Centre for Corporate Reputation. Funded. September 2009 - August 2015.

Rietz, T. (Co-Principal). Star Rankings and Optimal Asset Allocation: An Experimental Study. TIAA-CREF Research Institute. Funded. September 2009 - August 2012.

Rietz, T. (Co-Principal), Principal Investigator(s): Berg, J., Gruca, T., & Forsythe, R. Active Learning in Undergraduate Education Using the Iowa Electronic Markets (IEM). National Science Foundation (NSF). Funded. January 2000 - December 2003.

Rietz, T. (Co-Principal), Principal Investigator(s): Berg, J., Gruca, T., & Forsythe, R. Enhancing Economic Literacy Through the Iowa Electronic Market. United States Department of Education. January 1997 - December 2000.

McDonald, R., Richardson, D. P., & Rietz, T. (2021). Investment Defaults and Retirement Savings Allocations.

Noe, T., Rebello, M., & Rietz, T. (2025). Governance, Reputation, Crises and Recovery: An Experiment.

Noe, T., Rebello, M., & Rietz, T. (2025). Firm reputation and agency: Information environments, corporate governance and its optics.

Gruca, T. & Rietz, T. (2024). Iowa Electronic Markets: Forecasting the 2024 U.S. Election.

Noe, T., Rebello, M., & Rietz, T. (2024). Firm reputation and agency: Information environments, corporate governance and its optics.

McDonald, R. L., Richardson, D. P., & Rietz, T. (2021). The Effect of Default Target Date Funds on Retirement Savings Allocations.

Rietz, T. & McDonald, R. (2020). Ratings and Asset Allocation: An Experimental Analysis.

Berg, J. E. & Rietz, T. (2020). Do Unto Others: A Theory and Experimental Test of Interpersonal Factors in Decision Making Under Uncertainty.

Rietz, T. A. Behavioral Mis-pricing and Arbitrage in Experimental Asset Markets.

Department Executive Officer, Finance, University of Iowa, 2017 - 2023

Guest Editor, Journal of Economic Behavior and Organization, August 2011.