STANDARD Chartered Securities director Mr David Wong Wun-wing has left the firm. Mr Wong left the company abruptly on March 19. ''My departure came so soon because my contract is due to expire by the end of March. And I want to set up my own business,'' he said. Mr Wong denied that his relationship with the company had deteriorated but said he had left following a difference of views over operations. He insisted that his departure was ''quite normal''. ''If I didn't perform well, I wouldn't have got the bonus last year,'' said Mr Wong. ''Leading Spirit and Chun Wo were introduced by me. Who said I have failed to arrange deals?'' he said. ''Maybe I have had too high a profile during the last year,'' he said. Mr Wong stood for the Legislative Council in 1991, receiving just five votes in the financial services sector. He said many rumours had surrounded him since he had become more prominent in the field. Mr Wong joined Standard Chartered in 1990. He has worked at a number of brokerage firms, including Sun Hung Kai Securities, Standard Chartered Bank Hongkong Trustees, Hoare Govett Asia, First Pacific Securities (HK) and Chia Tai Securities.