Check out the companies making the biggest moves midday: TopBuild — The insulation installer rallied almost 8% after agreeing to buy Specialty Products and Insulation for $1 billion in cash . “The addition of SPI’s resources and capabilities further enhances our customer value proposition while its complementary fabrication footprint strengthens and expands our presence across North America,” TopBuild CEO Robert Buck said in a statement. Confluent — The data infrastructure platform jumped 9% after Reuters reported it’s considering a sale after attracting takeover interest. Reuters cited unnamed people familiar with the matter saying a possible sale began after private equity firms and other technology companies expressed interest in a purchase. CG Oncology — The cancer stock rallied more than 8% after Guggenheim initiated coverage with a buy rating and a price target that suggests massive gains ahead. The firm said it’s bullish on CG’s non-muscle invasive bladder cancer treatments. Alcoa — The aluminum maker jumped more than 4% after Wells Fargo initiated research coverage with an overweight rating and a $40 price target, according to FactSet. Penguin Solutions — The enterprise solutions provider for computing, memory and LED markets sank 16% after reporting a fourth-quarter revenue miss. Revenue came in at $338.3 million , compared to the FactSet consensus estimate of $342.1 million. Adjusted earnings per share topped expectations. Freeport-McMoRan – The copper and gold miner jumped 5% after Citi upgraded FCX to buy, expecting copper prices to rally in the first half of 2026. Viasat — The satellite communications provider jumped nearly 9% after winning a contract from the U.S. Space Force’s Protected Tactical Satcom-Global program. Viasat is one of five companies in the program, which will build a network of satellites with anti-jamming capabilities. Freshpet — The pet food maker dropped about 7% after BofA downgraded Freshpet to neutral from buy and slashed its price target to $60 from $81, StreetAccount said. Joby Aviation — Shares of the electric air taxi maker slid 6% after the company priced a secondary stock offering of 30.5 million shares at $16.85 each to raise $514 million. AST SpaceMobile — The broadband cellular network surged 9% after signing a deal with Verizon to provide customers with cell service from space starting in 2026. Verizon dipped 0.4%. Trilogy Metals — U.S.-listed shares of the Canadian copper explorer added another 4%, one day after more than tripling in price when the White House said the U.S. would take a 10% stake in the company that is seeking to open a new mine in remote Alaska. Rocket Lab — The aerospace manufacturer climbed more than 6% after securing a contract for three additional rocket launches . The Metals Company — The seabed mining company dropped almost 6% after soaring Tuesday on speculation it might reach a deal with the Trump administration. Ionis Pharmaceuticals — The pharmaceutical maker added 3% on the heels of JPMorgan’s upgrade to overweight from neutral. JPMorgan said Ionis had an “active” September and gave “encouraging” updates at its innovation event. Figma — The design software vendor soared 15% after OpenAI said it will integrate its technology into ChatGPT . Fair Isaac — The credit bureau slumped more than 9% after Equifax said its VantageScore 4.0 mortgage credit scores will cost $4.50 for two years, less than half the price of FICO’s. Equifax added 2%. Nvidia — The dominant maker of AI semiconductors rose almost 2% following reports that the chipmaker will help finance xAI chips as part of a $20 billion deal. — CNBC’s Fred Imbert, Michelle Fox, Christina Cheddar-Berk, Spencer Kimball, Lisa Han and Alex Harring contributed reporting. ( Learn the best 2026 strategies from inside the NYSE with Josh Brown and others at CNBC PRO Live. Tickets and info here . )
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