The study on "How Widespread and Predictable is Stock Broker Misconduct?" by SLCG, past customer complaints against individual brokers can serve as predictors of future complaints. McCann, Qin, and Yan's research shows that incorporating the complaint histories of co-workers greatly enhances the ability to predict complaints against brokers with no previous complaints. They also established that customer complaints that were denied, rather than just settlements and awards, are valuable for anticipating future investor harm.
Egan, Matvos and Seru's results confirm that, rather than weeding bad brokers out of the industry, the regulatory environment and labor market sifts bad brokers down the quality ladder over time into brokerage firms who employ brokers with disproportionately higher numbers of customer complaints. These high-risk brokerage firms have loose hiring practices and lax compliance ethics and specialize in preying on unsophisticated investors.
According to Dimmock et al. [2016], in a related investigation, financial fraud exhibits a contagious nature. Their findings indicate that a broker's likelihood of perpetrating financial fraud is strongly influenced by the propensity of their colleagues to commit fraud, independent of factors such as firm culture, branch atmosphere, market conditions, and state regulatory policies.
Bonny Sy Lees current employer,
is one of the 30 highest risk brokerage firms measured by the percent of brokers at the firm who have customer complaints disclosed on their BrokerCheck reports. 19.17% of
's brokers have customer complaints compared to only 2.71% of all brokers who have complaints.
If you have questions about this post, about

and/or Bonny Sy Lee or about the management of your accounts, please contact SLCG for an initial consultation or email us at
BrokerInquiry@SLCG.com.
Established in 2000, SLCG Economic Consulting ("SLCG") specializes in providing finance, economics, and investment management consulting, as well as expert witness services to law firms, banks, brokerage firms, and individuals involved in complex litigation. Our team comprises predominantly PhD and MA-level professionals with diverse backgrounds in academia, industry, and government, many of whom have testified in state and federal courts as well as various arbitration forums.
SLCG is a wholly owned subsidiary of McCann Yan Holdings, Inc., a Virginia incorporated company based in Northern Virginia.
Reference:
[1] S. Dimmock, W. Gerken, and N. Graham. "Is Fraud Contagious? Co-Worker Influence on Misconduct by Financial Advisors" The Journal of Finance Vol. 73, No. 3 June 2018.
[2] M. Egan, G. Matvos, and A. Seru. "The Market for Financial Adviser Misconduct". Working paper, Journal of Political Economy Volume 127, Number 1, February 2019.
[3] C. McCann, C. Qin and M. Yan. "How Widespread and Predictable is Stock Broker Misconduct?" The Journal of Investing, Volume 26, Issue 2, Summer 2017.
[4] H. Qureshi and J. Sokobin. "Do Investors Have Valuable Information About Brokers?". Working paper, August 2015.
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2652535