Rate My Professor Lyungmae Choi

Dr. Lyungmae Choi is a Lecturer in Finance within the Newcastle Business School at the University of Newcastle, Australia, a position she has held since 2024. Prior to this appointment, she was an Assistant Professor in the Department of Accounting at City University of Hong Kong from July 2017 to August 2023. She also served as a Visiting Scholar at the University of Sydney Business School from August 2023 to July 2024. Choi earned her Ph.D. in Business Administration from Arizona State University in 2017. Complementing her academic credentials, she holds a Master of Science in Management Engineering from the Korea Advanced Institute of Science and Technology (KAIST) in 2008 and a Bachelor of Science in Industrial Engineering, with a minor in Business Administration, from Yonsei University in 2005. Before commencing her doctoral studies, she accumulated four years of professional experience in commercial banking in Korea.

Choi's research interests center on capital market research, encompassing social networks, insider trading, mergers and acquisitions, and financial accounting. Her publications in top-tier journals reflect these foci. In 2025, she co-authored "It’s Not Who You Know—It’s Who Knows You: Employee Social Capital and Firm Performance" with DuckKi Cho, Michael Hertzel, and Jessie Jiaxu Wang in Management Science, demonstrating how employee social capital enhances firm performance. That same year, with Lucile Faurel and Stephen A. Hillegeist, she published "Do Proprietary Costs Deter Insider Trading?" in Management Science. In 2024, alongside DuckKi Cho, her paper "Shadow Union in Local Labor Markets and Corporate Financing Policies" appeared in the Journal of Corporate Finance. Additionally, in 2023, "Insider Trading, Future Earnings, and Post-Earnings Announcement Drift," co-authored with Faurel and Hillegeist, was published in the Journal of Accounting and Public Policy. These works explore mechanisms such as employee networks' impact on performance, proprietary costs' effect on insider activities, labor market influences on financing, and insider trading's role in mitigating post-earnings drifts. Choi teaches courses in financial accounting, managerial accounting, and financial statement analysis. She is fluent in English and Korean.