Doordash up after strong quarterly forecast

** Delivery platform DoorDash's DASH.O shares rise 4.8% to $270.40 after the bell

** DASH forecasts Q3 gross merchandise value between $24.2 billion and $24.7 billion, above estimates of $23.73 billion, according to estimates compiled by LSEG

** Reports Q2 gross merchandise value of 24.2 billion, up 23%, beating estimates of $23.58 billion

** DASH's Q2 revenue comes in at $3.28 billion, also beating estimates of $3.16 billion

** Stock has risen 53.8% YTD