DoorDash posts better-than-expected Q1 sales but shares fall on cost concerns

DoorDash said its net loss narrowed to $23 million in the first quarter, compared to a loss of $161 million in the same period a year ago. The loss, of 6 cents per share, was higher than the 3-cent loss Wall Street had forecast, according to analysts polled by FactSet. DoorDash said it increased both marketing expenses and research costs during the quarter.