Q: On Fast Money’s trader radar we look at the stock that was lighting up screens across Wall Street. Founded in 1951 in San Diego, this fast food chain was the first to introduce the concept of a drive-thru. It has since branched into the fast-casual category with the acquisition of Qdoba Mexican Grill in 2003. But today the company really went south of the border after disappointing results sent shares plunging. Who is it?

A: On the trader radar tonight we’re watching Jack In The Box ! The restaurant chain was among the most active names on the Nasdaq today.