https://www.cnet.com/roadshow/news/elon-musk-tesla-sec-contempt-of-court-tweets/

The SEC's move to hold Musk in contempt likely stems from a series of tweets from earlier in February. In these tweets, Musk speculates that Tesla will produce around 500,000 cars in 2019.

The news of the SEC's request caused Tesla's shares to sink by as much as 4.6 percent in after-hours trading at the time of publication.