BA Asia has been appointed market maker for the heavily-traded Exchange Fund bills and notes and Mass Transit Railway Corp (MTRC) paper.
The move will boost the bank's expansion in the debt securities market.
The bank has been concentrating on its Asia Securities Unit headed by David Walker-Smith, formerly with Chemical Securities Asia.
'Securing market-maker status was a strategic move and integral to our continued expansion plans within the Hong Kong debt securities market,' Mr Walker-Smith said.
The unit has been trading since October last year with 15 staff and the number is expected to rise this year.
The unit focuses on fixed income markets and is a central component to the bank's strategy to gain market share and increase capital-raising activity for corporations in Asia.