The business world is filled with starry-eyed entrepreneurs who hope that the blessings of angel investors and venture capitalists will transform their start-up dreams into companies with billion-dollar valuations.
But some successful start-ups have been bucking the trend by growing and expanding without taking a dime from major outside equity investors.
Image: Ron Rudzin self-financed his online mattress company, Saatva. Credit Bryan Anselm for The New York Times - http://www.nytimes.com/