Comcast announced on Tuesday that it will buy General Electric's entire 49 percent common equity stake in NBCUniversal for approximately $16.7 billion.
Also, NBCUniversal, the parent company of CNBC and CNBC.com, will purchase the properties it uses at 30 Rockefeller Plaza in New York and CNBC's headquarters in Englewood Cliffs, N.J., for about $1.4 billion.
Comcast shares jumped more than 8 percent in after-hours trading, while GE shares were up more than 3 percent. (Click here for the latest after-hours quotes.)