Tesla’s CEO Elon Musk sold about $1.05 billion in stock on Tuesday evening, according to financial filings posted this week. 

Musk has sold a total of $9.85 billion in Tesla stock this month, including the $6.9 billion he sold the week of Nov. 10 and another $1.9 billion he sold on Nov. 15 and Nov. 16. 

Musk and his trust still hold more than 169 million shares in the company.

Tesla’s shares fell 15.4% the week ended Nov. 12, marking the worst week for Tesla stock in 20 months after Musk began selling shares. Shares of Tesla were up about 1% on Wednesday afternoon.