The stock closed the day down 1.9%.
Here are the key numbers:
This marks the fifth consecutive quarter for which Comcast has exceeded analysts' earnings estimates. Shares of the stock have climbed more than 34% this year.
Comcast also surpassed analysts' expectations for high-speed internet customers, reporting 379,000 compared with FactSet expectations of 344,000.
Theatrical revenue for NBCUniversal slumped 8.8% from a year earlier. The company blamed the decline on the strength of film releases in last year's third quarter, including "Jurassic World: Fallen Kingdom" and "Mamma Mia! Here We Go Again." Comcast noted the decline was partially offset by the release of "Fast & Furious Presents: Hobbs & Shaw" during the third quarter.
The company said Sky, the British broadcaster acquired in September, saw its customer relationships increase 2.1% year over year to 23.9 million. Sky brought in $4.6 billion in revenue for the quarter, a 4.2% decrease from a year earlier. Comcast blamed the impact of currency fluctuations for the change.
Here's how Comcast's other divisions did for the third quarter:
The earnings report was Comcast's first since the official announcement of its new streaming service, "Peacock." The ad and subscription-supported service is slated to roll out in April with a packed content slate, including popular shows like "The Office" and "Parks and Recreation." It will compete with the likes of Apple, Disney and Netflix, among others.
Disclosure: Comcast is the owner of NBCUniversal, parent company of CNBC and CNBC.com.