Chipotle took on McDonalds as an early investor, used McDonald's investment to quickly expand from 16 to 500 stores. Chipotle had a tremendously successful IPO, which they used to fund further growth. McDonalds, who was always a minority investor, divested themselves from Chiptole earning $1.5 billion on a $450 million investment. It trades on the NYSE as CMG and has a market cap of 88 billion.