| Organisation | Role | Activity | From | Until |
|---|---|---|---|---|
| GCG Asset Management Limited | RO | Asset management | 2021-10-28 | - |
| Gary Cheng Securities Limited | RO | Advising on securities | 2015-12-02 | - |
| RO | Dealing in securities | 2015-12-02 | - | |
| Brilliant Norton Securities Company Limited | RO | Advising on securities | 2013-03-13 | 2015-10-31 |
| RO | Dealing in securities | 2013-03-13 | 2015-10-31 | |
| CHINAWIDE SECURITIES LIMITED | RO | Advising on securities | 2011-05-31 | 2013-03-07 |
| RO | Dealing in securities | 2010-11-09 | 2013-03-07 | |
| CCB INTERNATIONAL SECURITIES LIMITED | RO | Dealing in securities | 2006-06-15 | 2010-08-14 |
| ADMIS Hong Kong Limited | RO | Dealing in securities | 2005-04-12 | 2006-03-23 |
| HOU TAK SECURITIES LIMITED | RO | Dealing in securities | 2003-07-04 | 2004-07-20 |
| Rep | Advising on corporate finance | 2003-04-01 | 2003-05-20 | |
| Rep | Advising on securities | 2003-04-01 | 2003-05-20 | |
| Rep | Asset management | 2003-04-01 | 2003-05-20 | |
| Rep | Dealing in securities | 2003-04-01 | 2003-07-04 |