Delivery start-up Postmates expanding to 100 new cities and going deeper with Chipotle By: CNBC.com News July 10, 2018 at 11:54 AM EDT On-demand food delivery startup Postmates is adding 100 markets nationwide, and expanding its partnership with Chipotle. Read More >> Related Stocks: Amazon.com Chipotle Mexican Grill Grubhub Ord Shs