FAIRFIELD, Iowa--(BUSINESS WIRE)--Cambridge Investment Research, Inc. (Cambridge) hosted its annual national conference in Washington D.C. August 19-22, with over 1,800 attendees. Each year, a local charity – based in the city where Cambridge Ignite is hosted – is selected as a way for Cambridge Ignite attendees to give thanks to that local community. In closing Cambridge Ignite 2015, over $64,000 was donated to Warrior 360, a Washington D.C. based non-profit organization dedicated to providing