In November, Robinhood, the stock trading app, held deal talks with investors to raise a large round of funding. The company was seeking $100 million at a valuation between $600 million and $700 million, according to sources. And then… the round went quiet. Nothing was announced. I assumed it fell apart.

Now sources tell Fortune the company is very close to closing a new round of funding with a “much higher” valuation of over $1 billion. Perhaps the company got a boost from all those Uber drivers using Robinhood to buy Snap stock.

A Fortune’s Jen Wieczner wrote earlier this month: Robinhood, which has one million total users, says 43% of those who traded on Snap’s first day of trading bought Snap stock. The median age of those Snap investors: 26 years old, the same as Snap CEO Evan Spiegel.

The entire investment world has been hoping Snap’s IPO might get millennials interested in investing. As I wrote in December, most young people don’t play the stock market, according to surveys, because they don’t have the money or the understanding.

A Robinhood representative did not respond to requests for comment.