https://phys.org/news/2018-08-automaker-tesla-company-ceo-musk.html

Musk surprised markets on August 7 by announcing on Twitter he wanted to take Tesla private at $420 a share. But the shares have fallen more than 20 percent since.

After the announcement the controversial entrepreneur came under extensive scrutiny over his Twitter statements related to the proposal, especially a claim that Tesla had "secured" funding for the move.