Tesla shares dropped amid a broader tech selloff, as analysts warned of lower overseas demand for the EV maker's cars and a consumer backlash against Elon Musk's political activities. The stock was down nearly 4% at below $229 in midday trading,

As Tesla stock has fallen in recent weeks, members of the board and an executive at Elon Musk's company have sold off millions of dollars in stock, according to filings.

That wasn't the only competitor news impacting Tesla today. Zeekr, owned by Geely Auto, is reportedly offering an advanced driver-assistance system to Chinese customers for free. Tesla charges a monthly fee for its full self-driving technology in the U.S. if customers don't pay for it at the time of the vehicle purchase.