D on Hankey is an American self-made billionaire often referred to as the 'king of subprime auto loans'. He is the founder and chairman of the Hankey Group, a Los Angeles-based conglomerate of financial services companies. His journey began at his father's Ford dealership, where he identified a major opportunity in providing car loans to customers with poor credit histories, a market that traditional banks largely avoided.

He founded Westlake Financial Services and, using a sophisticated, data-driven approach to underwriting, he built it into one of the largest subprime auto lenders in the United States. He has since diversified his Hankey Group into a financial powerhouse with major interests in insurance (Knight Insurance Group), real estate, and software. He is known for his savvy and often contrarian investments, and his ability to generate high returns from a high-risk sector has made him one of the wealthiest people in Los Angeles.