As the CEO of Tesla, one of the buzziest companies in the technology sphere, Elon Musk has been one of the most discussed and followed business figures of the last decade. Far from just founding of the biggest automakers in the world, Musk has also had a hand in companies like SpaceX, the Boring Co., and more, making him one of the richest people in the world. While his net worth has taken some hits over the years, it recently surged amid a major Tesla stock boom.

Forbes estimates Musk is currently worth roughly $40 billion. In the magazine’s ranking, this makes him the 23rd richest person in the world. CNBC estimates Musk owns 19% of Tesla stock, or about 34.1 million shares. The company itself has an estimated market valuation of more than $100 billion while Musk’s SpaceX, an aerospace and space transportation company, is valued around $20 billion.

It was reported on Feb. 4 that Musk’s personal wealth had skyrocketed overnight by 4.5 billion. This came as the result of an ongoing trend of growth in Tesla stock, which jumped 17% between the end of trading on the previous day and midmorning the next day.

The ups and downs of Tesla stock have also been responsible for the wild variations in Musk's personal net worth in recent years. After the infamously botched reveal of the Tesla Cybertruck, in which the vehicle’s supposedly unbreakable windows shattered  during an onstage demonstration, the drop in Tesla stock value crashed his net worth by $770 million.

In 2018, his net worth dropped by nearly $1 billion after stocks dropped 9% in the wake of a New York Times interview with Musk in which he appeared worried about the future of Telsa. Musk said short-sellers could spell the end of the company, and the article further mentioned concerns from the company over his use of Ambien.

Elon Musk unveiled Tesla's all-electric battery-powered Cybertruck in November 2019 Elon Musk unveiled Tesla's all-electric battery-powered Cybertruck in November 2019 Photo: AFP / FREDERIC J. BROWN