The big story after hours in New York was social network giant Facebook (NASDAQ:FB), which added 2.25% after the bell to US$191.10 after it posted fourth quarter numbers.
Earnings and revenue for the three months surpassed Wall Street expectations at US$4.23bn and US$12.97bn respectively.
The company also reported making more money per user than anticipated, as well as a 14% percent increase in users year-on-year
"2017 was a strong year for Facebook, but it was also a hard one," said founder and chief executive Mark Zuckerberg.
"In 2018, we're focused on making sure Facebook isn't just fun to use, but also good for people's well-being and for society."
Going the other way was payments giant PayPal Holdings Inc (NASDAQ:PYPL), which tanked over 7% at US$79.30 in extended hours after it reported earnings per share (EPS) of US$0.55 on revenue of US$3.71bn, beating Wall Street expectations of US$0.52 EPS on US$3.63bn in revenues. In addition, eBay also announced it was dropping the firm as its main payment processor in favor of Dutch company Adyen.
Speaking of which, online auction group eBay (NASDAQ:EBAY) added 10.40% in extended hours to US$44.77 after the e-commerce company announced fourth quarter earnings and revenue that fell exactly in-line with analyst expectations.
The group announced it grew active users by 5% across its platforms, bringing its total to 170 million active users globally.
Computer giant Microsoft Corp (NASDAQ:MSFT) was also in play after the bell - with shares up 0.12% to US$95.12.
The tech group beat Wall Street’s profit forecast, helped by growth in the cloud computing business, but it did suffer a US$13.8bn one-time charge due to the new US tax rules.