Teenage Millionaire | Best Pick |

Leo sat in the back of Mrs. Gable’s economics class, his thumb hovering over a "Sell" button on his cracked phone screen. While his classmates were debating the merits of supply and demand curves on the whiteboard, Leo was watching a real-time graph of "EduSpark," the peer-to-peer tutoring app he’d built in his bedroom.

His life became a series of strange dualities. In the mornings, he’d argue with his mom about cleaning his room or taking out the trash. In the afternoons, he’d sit in his lawyer’s glass-walled office, signing documents that moved more money than his parents had earned in a decade. Teenage Millionaire

One Friday, he pulled up to the local grocery store in the modest sedan he’d bought used—he didn't like to drive much anyway. He saw Mrs. Gable struggling with two heavy bags of groceries. "Need a hand, Mrs. Gable?" he asked, hopping out. Leo sat in the back of Mrs