Third-richest person in the world

At the start of 2020, Musk was the 35th richest person in the world. Throughout that year, his net worth increased by $150 billion, largely driven by his ownership of around 20% of Tesla stock. During this, Musk's net worth was often volatile. For example, it dropped $16.3 billion in September, the largest such plunge according to Bloomberg. In November of that year, Musk passed Facebook co-founder Mark Zuckerberg to become the third-richest person in the world; a week later he passed Microsoft co-founder Bill Gates to become the second-richest.