"Am considering taking Tesla private at $[US] 420". Even as the world's 31st-richest person and Tesla's largest shareholder, Musk would be reliant on outside funding for any buyout since his fortune is highly illiquid.

Tesla's shares were up 6.5% at $363.46.

He implied that the funding values the company at $420 a share.

Elon now owns about 20 percent of Tesla and so he would need something like $50 billion in additional capital to fully privatize the company, along with a shareholder vote of "yes" to the move. He also said he intends to give Tesla's existing shareholders the option of retaining a stake in the company through a special fund, if they want.

Musk has also clashed repeatedly with critics, especially investors who have taken short positions on the stock, meaning they benefit when the price falls.

Tesla did not immediately respond to a request for confirmation or clarification.

Basically, I'm trying to accomplish an outcome where Tesla can operate at its best, free from as much distraction and short-term thinking as possible, and where there is as little change for all of our investors, including all of our employees, as possible.

His US$12b Tesla stake would presumably be rolled into the private enterprise. The CEO said shareholders would have the final say if he decides to follow through on going private, and that he would stay in his job. Depending on the follow-through, or lack thereof, Musk's statements could cause problems with the Securities and Exchange Commission.

MoviePass Is Still a Mess, Reverses Price Hike Plans
Just last week, the company announced that it would be upping the price of its subscription to $14.95 a month. MoviePass has existed for years, but it used to be a little-known, significantly more expensive program.

Mr Musk has been under intense pressure this year to prove he can deliver on his promise to turn his money-losing company into a profitable higher-volume manufacturer.

Last week Tesla said it had achieved its goal of producing 5,000 Model 3 vehicles per week by the end of its second quarter in June, but burned through $739.5m (£565.2m) in cash during the period in order to do it.

BUYING TIME. Elon Musk has had a bumpy relationship with investors as of late, and has taken Twitter to lash out at short sellers repeatedly. The buyout is good for a 20 percent premium over the current market price of the stock and would value the company at over $70 billion dollars at current numbers of outstanding shares.

DON'T MISS: Analysis: Did Tesla's earnings call and stock surge save Musk and skip skeptics?

It is far from the first time Musk has dropped a financial bomb to his 22 million Twitter followers.

Tesla doesn't meet the typical profile of a company that can raise tens of billions of dollars of debt. Will be way smoother & less disruptive as a private company.

"In the future, once Tesla enters a phase of slower, more predictable growth, it will likely make sense to return to the public markets", writes Musk.