Trader Radar - Tuesday, Apr. 8th

Q: On Fast Money's Trader Radar we look at the stock that was lighting up screens across Wall Street today. Endorsed by Marie Osmond and Dan Marino, this Horsham, Pennsylvania-based company helps its customers slim down with pre-packaged diet plans. And while its customers try to fight gains, investors were enjoying some today on better-than-expected earnings. Who is it?

A: Nutrisystem is on the Trader Radar tonight. Shares of this weight loss company traded more than seven times the average daily volume.