Until recently, it would have been a safe bet that no 23-year-old in the world had ever turned up his nose at $3 billion. But that's exactly what Evan Spiegel, the co-founder and chief executive of ...

When your stock price spikes 23% in a single day, you probably did something right. And in the case of Snap this week, the company did have a lot go right in the second quarter. But it wasn’t always ...