Mark Zuckerberg has had plenty of difficult days in the past year, but this past week was a good one for him. The Facebook CEO's net worth jumped $5.5 billion in the week through Thursday April 25. The 34-year-old is worth $71.3 billion, $20 billion more than at the beginning of 2019. He is now the 5th richest person in the world, up from No. 8 in March. The positive quarterly earnings report overshadowed news that Facebook is setting aside as much as $5 billion to pay a fine to the Federal Trade Commission over privacy issues. Zuckerberg's gain was by far the biggest of the week, but he is in good company. The fortunes of Zuckerberg and four other tech billionaires, including Amazon's Jeff Bezos, rose by a collective $13 billion in seven days. A day after Facebook released its first-quarter earnings report, Amazon announced a quarterly profit of $3.6 billion, an all-time record for the e-commerce giant. Amazon's share price rose 2.2% in the week through Thursday, causing Bezos' net worth to surge by $3.2 billion. The net worth of Steve Ballmer, Microsoft's former CEO, rose $1.7 billion in the week through Thursday as the software giant's share price increased by 4.7%. Michael Dell, chairman and CEO of Dell Technologies, is now worth $40 billion after gaining $1.4 billion in a week due to a 6.6% stock uptick. Larry Page, the cofounder of Google and CEO of its parent company Alphabet, got $1.1 billion richer, with an estimated fortune of $57.6 billion.