Mad Money W/ Jim Cramer

With the stock up nearly 18% in the last week, Jim Cramer’s checking in with the high-flying RingCentral to make sense of the recent action. Then, Ollie’s stock has been beaten down as of late, so is it finally a bargain at these levels? Cramer’s digging into the company and seeing if now is the time to buy. Plus, Cramer’s turning in his homework on Cardlytics to see if the stock up nearly 440% in the last year has more room to run.