Cramer's lightning round: 'I think it's time to buy Fastly'

• It's that time again! "Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

EBay: "EBay is chronically undervalued and I'm going to say you should be able to buy it."

Channeladvisor: "I haven't looked at ECOM in a long time. I used to like it very much. I don't know, I thin kI have to do some more work on it."

Fastly: "I think you're barking up the right tree. I think it's time to buy Fastly."

First Solar: "I'm not a huge fan of solar ... I do like wind, but I'm not a big solar fan, I'm not a First Solar fan."

Kratos Defense and Security Solutions: "I have liked this defense contractor literally when it was at $9 ... and it continues to be right."

Sirius XM Holdings: "It's been disappointing of late, which is surprising, given the fact that the used car market is so strong. I don't want to abandon it — there [were] a lot of sports that [were] canceled for a while. I think you stay long it, even though it's at $5 I think it should be higher."

ArcelorMittal: "I do not like the steel companies."

Disclaimer

Questions for Cramer?
Call Cramer: 1-800-743-CNBC

Want to take a deep dive into Cramer's world? Hit him up!
Mad Money Twitter - Jim Cramer Twitter - Facebook - Instagram

Questions, comments, suggestions for the "Mad Money" website? [e-mail]