A couple of times in the early portion of this hour, a possible manipulator appears to have attempted a push to prevent TSLA from reaching the all-time intraday high of $389.61 set on 2017 SEP 18. Surpassing that level could inspire buying by institutions and covering by short sellers. The all-time closing high of $385.00 was set that same day, and the price is above that right now.
The intent of the likely manipulation with moderately heavy volume, may have been to trigger stop limits of weak longs (mainly day traders). The ultimate purpose might have been to stave off margin calls to short sellers, which could be starting later today. Virtually all TSLA short sellers now hold a losing position. Institutions that hold positions long-term normally do not trade with such spurts.