Trader Radar - Wednesday, Feb. 20th

Q: On Fast Money's Trader Radar we look at the stock that was lighting up screens across Wall Street. One of the fastest growing companies of 2007 according to Fortune magazine, this provider of pre-packaged weight-loss programs boasts celebs like Dan Marino and Tori Spelling as spokespeople. But it seems the company lost more than waistline inches this quarter. The stock plunged as recession worries may crush consumer spending on diet products. Who is it?

A: Nutrisystem is on the Trader Radar! This weight-loss company traded eight times its normal average volume Wednesday.