Roku reported fourth quarter 2018 earnings that beat analyst estimates and provided guidance in line or above expectations for 2019.
Dropbox beat estimates in the top and bottom lines and had more new paid users than expected. The stock moved lower after the company gave guidance.
Fidelity's operating income rose 19 percent last year, while revenue increased 12 percent to a record $20.4 billion.
Domino's shares sink after the pizza chain disappointed investors with weaker-than-expected earnings and revenue.