After the New York bell, Tesla (NASDAQ:TSLA) shares dropped 2.44% to US$309.50 as the electric car giant unveiled its fourth quarter production and delivery stats.
The report revealed that the company has missed Wall Street's projections on several fronts, amid production issues.
It also once again pushed back production targets on its highly anticipated Model 3 sedan.
Meanwhile, in other tech news, chip firm Intel Corp (NASDAQ:INTC) dropped 2.25% to US$44.24 in extended trade after chief executive Brian Krzanich responded to allegations about the company's chips.
An industry blog reported this week that a patch for a security flaw in some of its chips would hamper performance.
The company boss said Google made Intel aware of the widespread security exploit previously and that the companies had been working together to fix it.
Meanwhile, Rite Aid Corp (NYSE:RAD) shares dropped 3.79% to US$2.03 after the drugstore chain beat third quarter estimates for earnings and revenue, following adjustments to account for discontinued operations.
Elsewhere and heading decidedly the other direction, Zumiez Inc (NASDAQ:ZUMZ) shares surged almost 17% to US$23.95 after the specialty clothing retailer reported a 7.9% increase in year-on-year same store sales for the month of December.