Two Nasdaq-listed companies and one New York Stock Exchange-listed firm were among those who reported financial results after the close of regular trading this evening. For the day, the Standard & Poor's 500 Index was lower, by 0.3 percent. The U.S. dollar was higher against the Euro, by more than 1 percent. Oil rallied, by $0.14, to $53.29 per barrel. Gold was up, by $19, or 1.6 percent, to $1,218.10 per ounce.

United Continental Holdings (NYSE: UAL) stock was lower in the after-hours session after the airline reported fourth-quarter 2016 revenue of $9.1 billion, beating the Wall Street analyst consensus of $9.03 billion, by $70 million, or 0.8 percent.

Revenue was up $60 million, 0.7 or percent, year over year. United earnings, on a per share basis, were reported at $1.78, beating expectations of $1.69, by $0.09, or 5.3 percent. EPS was down $0.76, or 30 percent, year over year. A conference call for analysts and investors to discuss today's results with management is scheduled for 8:30 a.m. ET tomorrow, Wednesday, January 18, and may be accessed from the United Continental investor relations website.

UAL Chief Executive Officer Oscar Munoz described 2016 as an "outstanding" year. The CEO went on to state the airline's "commitment by investing in our employees, elevating our customer experience and driving strong and consistent returns for our shareholders."

IBKR stock lower in after-hours trade on Interactive Broker earnings

Interactive Brokers Group, Inc.

(Nasdaq: IBKR) stock was lower in after-hours trading after the brokers reported full-year 2016 diluted earnings per share of $1.25, up from $0.78, by 60.3 percent, in 2015. Interactive Brokers reported revenue of $1.4 billion, up by 16.7 percent, from $1.2 billion, in 2015. A conference call is scheduled for 4:30 p.m. ET and may be accessed from the Interactive Brokers investor relations website.

CSX stock down after hours on CSX earnings

CSX Corporation (Nasdaq: CSX) stock was lower in after-hours trading on fourth-quarter 2016 CSX earnings. The railroad company reported EPS of $0.49, meeting the analyst consensus. Year over year, EPS was higher by $0.01, or 2.8 percent. CSX gross sales of $3.07 billion were reported, beating expectations of $2.87 billion, by about $200 million, or 7 percent.

Revenue was up from fourth-quarter 2015 levels of $2.78 billion, by 10.4 percent. A conference call for investors and the analyst community is scheduled for 8:30 a.m. ET, tomorrow, Wednesday, January 18; the webcast may be accessed from the CSX investor relations website.

CSX Chairman and CEO Michael Ward cited a loss of close to $470 million in coal revenue being almost matched with productivity savings of close to $430 million. In a statement to Globe Newswire, Mr. Ward described "Business conditions gradually improving and the ongoing transformation into the CSX of tomorrow."