GNC Holdings Inc. (GNC) is trading 33.67 down 2.27 today.? GNC is trading well off of its 52-week highs.

Today paper traded, and most likely bought, the GNC Feb 35/37.5 call spread for .75-.76 3,900 times over 4,400 times.? Open interest is over 3,900 on the 35 strike and 4,400 on the 37.5 strike. GNC trades 1,111 contracts per day on average. The implied volatility is up 8 points in Feb. The call spread looks to be closing.

30-day implied volatility is 49%.? ?10-day implied volatility is 38%.? 30-day implied volatility is trading over the 10-day historical volatility.?

GNC Holdings, Inc. (GNC), formerly GNC Acquisition Holdings Inc., is a holding company. The Company is a specialty retailer of nutritional supplements, which include vitamins, minerals and herbal supplements (VMHS), sports nutrition products, diet products and other wellness products. As of December 31, 2011, the Company had a worldwide network of approximately 7,600 locations and its online channels.