On March 10, 2021, Roblox began trading at $64.50 per share. CNBC calculated how much a $1,000 investment ... Are you stressed about money? Sign up for CNBC's new online course.

Jacob Girdler joined Roblox in 2011 on a whim. "I was just sitting there watching TV with a friend, when he said, 'Hey, I found this new blocky game. Do you want ... didn't quite have names.