The SFC said it has banned Yeung from re-entering the industry over the next 12 months.
Yeung was an associate portfolio manager of HSBC and was responsible for opening accounts for small and medium-sized enterprise clients and promoting investment and insurance products.
The SFC said Yeung was found to have transferred client data “for purposes other than for which the data was collected".
On his last working day with HSBC on 13 December, 2013, Yeung sent data concerning 1,540 customers to his personal email from his HSBC email.
Then, on 16 December, 2013, his first day on the job at his new employer, China Construction Bank, he sent the client information from his personal email to his email at his new workplace.
As Yeung was serving similar corporate clientele at CCB, he considered that the client information would help facilitate his new job.
Upon request from HSBC, CCB deleted the emails attaching the client information from its email server.
“The SFC is of the view that Yeung’s conduct has called into question his fitness and properness to remain a licensed or registered person,” the regulator said in a statement.