Detroit - Elon Musk declared on Thursday that he sold 4.4 million shares of Tesla stock worth roughly $4 billion. The shares were sold over the past few days, at prices ranging from $872.02 to $999.13. The sale was reported by Musk in a filing with the Securities and Exchange Commission.

Tesla investors fear Musk will be distracted by Twitter and less engaged in running the electric car company.

Musk said in a tweet that there are "no further TSLA sales planned after today." He sold 4.4 million shares on Tuesday and Wednesday, according to the filings, equivalent to 2.6% of his stake in the company.

This is his first Tesla stock sale since he offloaded $16.4 billion worth of shares in November and December after polling Twitter users about selling 10% of his stake in the electric car maker.

As part of the Twitter deal, Musk also took out a $12.5 billion margin loan tied to his Tesla stock. He had already borrowed against around half of his Tesla shares.

He holds a 43.61% stake in unlisted rocket company SpaceX that is reportedly valued at $100 billion.

According to Forbes, the world’s richest man, Musk's net worth is $268 billion.
-AP/Reuters