JPMorgan has relocated Chester Kam, managing director and head of Asian rates trading in Singapore, to Hong Kong. An official at the firm said Kam made the move to concentrate on the growing Hong Kong derivatives market as well as look for opportunities in the Mainland. "Basically the future Chinese market is quite promising," said the official. Kam was traveling and did not respond to emails by press time. Marie Cheung, spokeswoman, did not respond to calls by press time.