https://www.cnbc.com/2018/10/05/tesla-shares-drop-nearly-5percent-after-musk-mocks-sec-on-twitter.html

Tesla shares dropped more than 5 percent percent Friday morning, a day after CEO Elon Musk sent out a tweet that appeared to mock the Securities and Exchange Commission, with whom Musk is trying to settle allegations of fraud.

Musk sent the tweet hours after a judge handling Musk's settlement agreement with the SEC ordered both parties to write a joint letter explaining why the court should approve it.