Check out the companies making the biggest moves premarket: Comcast — Shares surged 20% after the company announced it would spin off its media portfolio of NBCUniversal and Sky. The spin-off is expected to be completed in about one year, and will see Comcast co-CEO Mike Cavanagh stepping into the role of leader at NBCUniversal, while former Comcast CFO Michael Angelakis will become chief of the telecommunications company. Rocket Lab , Iridium Communications — The two companies’ stocks jumped after Rocket Lab announced it would acquire Iridium. Rocket Lab said the merger will combine the company’s launch capabilities with Iridium’s satellite communications network. Rocket Lab jumped more than 10% while Iridium surged more than 20%. SpaceX — The stock rose 2% after Nasdaq announced on Friday that SpaceX would be added to the Nasdaq 100 index before trading on July 7. Its inclusion could lead to a wave of ETF buying demand. Charter Communications — The home internet provider soared almost 20% on a Bloomberg report from Friday that said the company and SpaceX had held exclusive talks on a consumer phone product. The report said Charter could run some of SpaceX’s consumer mobile phone traffic through its ground internet infrastructure. Alphabet — Shares were up about 1% as the “Magnificent Seven” darling was set to trade for the firs …
