DoorDash has nearly tripled its valuation within the past six months as the San Francisco company sprints to become the top name in national restaurant delivery.
Just months after closing a mammoth $535 million round, DoorDash has raised another $250 million to boost its valuation from $1.4 billion to $4 billion. The delivery provider has been on a rampant growth spurt since the start of the year, working to boost its current 1,000-city footprint to 2,000 cities before the end of the year. It plans…