A small investment made at the right moment has the power to launch ordinary people to millionaire status. All it took was $1,000 and an out-there idea for Jeffrey Sprecher, the founder and CEO of Intercontinental Exchange, to set his business on a path to becoming a $98 billion behemoth.

“I had this idea that you should be able to trade electric power, buy and sell electric power, on an exchange,” Sprecher recalled recently at the Rotary Club Of Atlanta. But there was a huge caveat: He “had no idea how to do that. I’d never worked on Wall Street, I never traded.”

At the time, Sprecher had heard that Continental Power Exchange—owned by Warren Buffett’s electric utility company, MidAmerican Energy—was about to go bankrupt. Despite Buffett’s business pumping $35 million into it, the company was still struggling. And so Sprecher saw this as an opportune moment to swoop in and pursue his entrepreneurial vision.

“I bought the company for a dollar a share, and there were a thousand shares. So I bought it for $1,000, and I used that as the basis to build Intercontinental Exchange.”

Thanks to his quick thinking and business savvy, Sprecher now boasts a net worth of $1.3 billion. But the journey to the top was not very glamorous.