Now, we all know that Musk was already a very wealthy man.

Being the founder, CEO, and Chief Engineering Designer of not only Tesla but SpaceX too, he has an awful lot going for him.

Tesla is known for its state of the art engineering...

With the company pioneering the future of electric car travel with Musk as its CEO.

And his other venture, Space X, is paving the way for the future of space travel.

Space X became the first private company to successfully launch, orbit, and recover a spacecraft, as well as the first to send a spacecraft to the International Space Station (ISS).

So, of course, all of this has earned Musk a handsome sum over the last few years...

With the CEO holding a net worth of $165.4 billion as of last year, according to Forbes.

Quite the achievement, I know.

Musk passed Facebook founder and CEO, Mark Zuckerberg, in the world's richest list after Tesla was selected to join the S&P 500, a stock market index that measures the performance of 500 large companies listed on the U.S stock exchange, at the end of last year.

This means that Musk was then left with only 2 men to compete with financially...

Bill Gates and Jeff Bezos.

But it was quickly realized that he didn't need a lot to surpass Microsoft's co-founder for second place.

The statistics showed that Musk only needed another $8 billion to knock Gates out of 2nd place.

And $8 billion really isn't too unachieveable when you're already a billionaire...

So many of us weren't too surprised when, even one week after Tesla's induction to the prestigious S&P 500, Musk's net worth soared to $127.9 billion, while Gates' lagged behind.

Last year alone, his fortune grew by $100.3 billion.

Experts say it was a result of Tesla's share price rising, which he owns a twenty percent stake of.

However, there was one man who even Musk couldn't beat...

Amazon's CEO, Jeff Bezos.

Until this year that is...

Last week saw a jump of 4.9 percent for the stock price of Tesla - an increase that came just days after finishing the first trading session of the year where they saw an increase of 3.4 percent.

Musk's net worth subsequently soared to a staggering $188 billion, as per Bloomberg's Billionaires Index.

And with Jeff Bezos net worth standing at $187 billion, Elon Musk placed as the worlds richest man.

A great achievement for Musk!

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Though one he seemed pretty relaxed about.

In response to the news, he simply tweeted, "How strange"...

How strange

— Elon Musk (@elonmusk) January 7, 2021

Before adding, "Well back to work".

But, unfortunately for Musk...

Things don't last forever... Or, in this instance, longer than a week.

Just 4 days after becoming the world's richest man, Musk has fallen short once again.

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He has reportedly dropped back into second place.

Monday saw shares of Tesla fall by almost 8 percent.

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Creating the companies largest one day dip since September last year.

The drop in shares pushed Musk's net worth down by $13.5 billion, to $176.2 billion Forbes reports...

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Meaning that he's running behind Bezos, once again.

Though, even Bezos experienced a drop in his net worth this week.

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Bezos' net worth was lowered by $3.6 billion following a more than a 2 percent drop in shares of Amazon.

We're sure he will make those billions back in no time...

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For more on these insanely wealthy people, keep on scrolling...