HONGKONG Bank and Cheung Kong options saw the open interests leap from the 30,000 and 7,900 level in September to 37,000 and 18,000 in October. Hongkong Bank saw a total of 64,837 contracts traded and an average of 2,947 contracts were traded per day. Premium turnover was $103 million. The average premium per share was $4. Cheung Kong saw 30,829 traded in the month with an average of 1,401 traded per day. Premium per share was $1.7. Swire A had 12,525 contracts traded and average premium per share was $3.4. Citic saw 986 contracts traded. The average premium per share was $1.1.