Carvana shares dropped 4.9% to $346.36 Thursday, extending losses after a U.S. court ordered the company to produce withheld email attachments in ongoing securities litigation. The order, signed Feb. 10, compels disclosure of communications tied to DriveTime. Investors remain cautious ahead of Carvana’s Feb. 18 earnings report. Executive Thomas Taira sold 1,047 shares on Feb. 9, SEC filings show.