According to a form filed with the Securities and Exchange Commission, Musk has sold another $3.5 billion in shares of the company. According to The Wall Street Journal, Musk has sold more than $38 billion of shares since the high point of the company's share price.

Musk, who recently lost the title of being the world's richest man, last filed with the SEC about the sale of his company's shares. He sold $8.4 billion in April and $6 billion in August. He sold once in April and once in August.

After closing the acquisition of the company, Musk has been running his social media site. Advertisers have fled the company, and in November visits to the ad manager fell 85 percent from the year before. 89 percent of the company's revenue came from advertising. The company stopped paying rent on some of it's space. Several waves of layoffs have taken place at the company.

Musk uses his social media account to rally retail investors. He introduced a way for investors to ask questions during his earnings calls. The Wall Street Journal says that the closing price of shares ofTesla was the lowest in more than two years.