Tesla vehicle sales have been under pressure in the U.S., China and Europe in Q2. Forbes reported Thursday that Musk fired Omead Afshar, Tesla's head of operations in North America and Europe. Afshar began at Tesla in 2011 and, during his tenure, reportedly became one of Musk's top lieutenants and most trusted allies.

Tesla's Q2 delivery data, while better than feared, remains weak and signals ongoing operational uncertainties. Click here to find out why TSLA is a Hold.