Jeff Bezos’ net worth jumped $2.7 billion to $21.5 billion on Friday, the first trading day after Amazon surprised investors with stronger than expected earnings on Thursday after the market closed. Net income for the quarter was 28 cents a share, quadruple the Street consensus at 7 cents, as reported by my colleague Eric Savitz. Net sales increased 34% to $13.18 billion in the first quarter. The stock jumped $30.9, or 15.8%, in one day.