Tech Five: Apple to report earnings after bell

Wall Street has already digested several big earnings reports in tech, with more two big ones arriving when the markets close Tuesday:

Let's take a look at tech stocks to watch:

Apple. The question on most minds on Wall Street is how many iPhones did the tech giant sell during the fourth quarter. Analysts project Apple to sell between 48 million and 49 million smartphones, which would represent a 25% bump from last year.

Twitter. With Jack Dorsey aboard as the social network's permanent CEO, the company reports third quarter earnings after the markets close. Analysts forecast revenue of $559.4 million with adjusted earnings per share of 5 cents.

Alibaba. Shares jumped more than 7% in morning trading after the Chinese e-commerce giant beat Wall Street on second quarter earnings and revenue. Mobile was especially strong for Alibaba, as mobile revenue generated from retail outlets in China nearly tripled. Alibaba also gave Yahoo shares a lift, up 4%. Yahoo owns a 15% stake in Alibaba.

T-Mobile. The wireless carrier added 2.3 million subscribers during the third quarter, but revenue missed analyst forecasts. T-Mobile also reported net income of 15 cents a share, up from a 12-cent loss a year ago.

Comcast. Thank Minions and dinosaurs for the cable giant's third-quarter haul. The company reported $18.7 billion in revenue during the quarter, citing the theatrical releases of Minions and Jurassic World over the summer. Revenue for its cable unit rose 6.3% as more consumers subscribed to Comcast's Internet service.

Follow Brett Molina on Twitter: @brettmolina23.