https://www.cnbc.com/2018/08/20/tesla-lows-arent-yet-in-expect-another-5-to-20percent-drop-piper-jaffray.html

Tesla's roller-coaster ride showed no sign of slowing Monday as the stock kicked off the week on a low note. And according to Piper Jaffray's top technical analyst, there's more pain ahead.

"Key support is at $285 and failure to hold this level leaves the shares back in the 2013-2016 consolidation range of $183-$285," Craig Johnson, senior technical market analyst at Piper Jaffray, told CNBC in an email on Monday.