dieters. launching four new lifestyle bowls today. aimed at customers following trendy diets like whole 30, i don't know what that is s. paleo, keto. >> yet, this is all i hear about lately. >> the new menu items come after a great year for chipotle. the stock, the sixth best performer in the s&p 500 last year it surged 50% in 2018. best year since 2013 so are they posed for a comeback joining us now is the guggenheim managing director and kate rogers kate, does the ceo deserve all of the credit for a 50% turn around in the stock? >> i'd say he deserves a lot of it. >> what did he do? >> a ton of investor optimism from the time he was named to date it was up 50% from that point on you know, two things that he came in and said he was reminding people why they love chipotle, the things they're well known for and removing friction when it comes to the customer experience when you're ordering on mobile or picking it up in stores or if you're in the store, moving you quickly through the restaurant so you can get your order and be on your way i think he's pulled through with a lot of the things he set out to do. >> i was really surprise