Citi (C) Dec 26 calls are the most active equity options contracts in the first 15 minutes of trading Tuesday. 6,300 changed hands. The top trade is a 1214-lot for $1.32 when the market was $1.30 to $1.33. Dec 30 calls on Citi are seeing interest as well. 1,025 traded. Shares are up 20 cents to $25.20 and total volume in the bank is 13,000 calls and 4,525 puts. Prior to today, shares lost ground in seven of the past nine trading sessions and gave up 20.4 percent. Implied volatility in Citi options has eased 2.5 percent to 62.5 today and the flow seems to refllect expectations for a recovery of some of the recent losses in the weeks ahead.