Doordash-Instacart deal will reportedly reshape the grocery delivery market. DoorDash, founded in San Francisco in 2013, began delivering groceries in 2020 and Instacart, founded in 2012, specializes in grocery and convenience store delivery in the U.S. and Canada." name="description">window.pageLoadStarted = (new Date()).getTime(). stock price at the US stock market jumped nearly three per cent on Thursday whereas Instacart share price at the Wall Street fell.