Instant Lending Made This College Dropout a Billionaire

David Zalik’s $3.6 billion GreenSky helps consumers with good credit pay for big ticket outlays—from home improvement to elective surgery.
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There’s a contractor in your living room, pitching a $15,000 home-improvement job.

You want to do it, but you don’t have that kind of cash just lying around. Then he dangles cheap financing: He asks for your driver’s license, flips it over, and scans the bar code. Forty seconds later, you have a loan—not just preapproved, but actually approved. No interest and no payments for the first 12 months. You sign the contract.