** Shares of U.S. meal delivery platform DoorDash DASH.O fall nearly 1% to $203.50 in trading before the bell

** DASH will buy Deliveroo ROO.L in a deal valuing the British rival at about 2.9 billion pounds ($3.86 billion)

** The companies rekindled talks last month after DoorDash approached Deliveroo with a 180 pence per share proposal, which was confirmed on Tuesday as the final offer

** The acquisition will help DoorDash grow its market share in Europe, competing against Just Eat and Uber Eats

** As of last close, DASH was up nearly 22% YTD

($1 = 0.7514 pounds)

(Reporting by Pritam Biswas in Bengaluru)

((Pritam.Biswas@thomsonreuters.com))