Shares of United Therapeutics Corp. (UTHR) are trading up .40 to 53.89.? UTHR is trading near three-month highs.

Today a block of 6,024 UTHR May 47.5p/57.5 risk reversals trade .80.? Average volume is 805 contracts per day in the name.? Open Interest is 6,200+ contracts per strike.? The trade looks to be closing an earlier collar position but check the open interest today.?

30-day implied volatility is 29%.?? 10-day implied volatility is 18%.? 30-day implied volatility is trading over the 10-day historical volatility.

United Therapeutics Corporation is a biotechnology company focused on the development and commercialization of products to address the unmet medical needs of patients with chronic and life-threatening conditions