SEATTLE--(BUSINESS WIRE)--Redfin (www.redfin.com), the customer-first real estate brokerage, today announced an investment of $70.9 million, led by large institutional investors including Wellington Management Company, LLP, as well as Glynn Capital Management, LLC. Other key investors include Brothers Brook, LLC, an investment firm led by Jeffery Boyd, chairman of the board of directors of The Priceline Group; and Annox Capital Management, led by Redfin board director Bob Mylod. Funds and accou