Stocks making the biggest moves midday: Comcast, Charter Communications, Rocket Lab, Alphabet, Verizon & more

Check out the companies making the biggest moves midday: Chipmakers — Semiconductors were volatile Monday as investors rotated money between the sector and the rest of the market. The VanEck Semiconductor ETF (SMH) was last up 2.5% after falling as much as 3.1%. Nvidia traded 0.6%, recovering from a 1.4% slide. Micron pared earlier losses, trading 2% lower. TopBuild — The insulation and building materials maker dropped 12% to start the week, putting it on pace for its worst day since March 2020. The move comes as investors brace for TopBuild to be acquired by QXO. The deal was announced in April . Comcast — Shares rose 6% 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 9%, while Iridium surged more than 21%. AppLovin — Shares climbed more than 4% after Raymond James initiated coverage of the digital advertising platform with a strong buy rating and a $640 pice target. …