Starwood Hotels (HOT) implied volatility is moving higher amid increasing interest in Mar puts. After selling off aggressively during the past 30 min, the stock is down $1.42 to $10.17. Action is hot in the Mar 7.5 puts, with 8,500 traded. Some of the activity appears to be sellers collecting a dime. Implied volatility in that contract is 123 percent. Overall, implied volatility is up to 93, from about 85 the day before.