Check out the companies making the biggest moves in premarket trading: Alphabet — The tech giant moved 2% higher after unveiling its most advanced artificial intelligence model yet, Gemini 4 Argon . The new model delivers improvements in cybersecurity, coding and complex professional work, Alphabet said. Accenture — The global professional services company soared 17% following its fiscal fourth-quarter results. Accenture’s revenue of $18.68 billion exceeded the company’s guidance of $17.75 billion to $18.4 billion, as well as FactSet’s consensus estimate of $18.3 billion. Its earnings of $3.29 per share also topped expectations. Rocket Lab — Shares rose 4.5% after the space company signed a multiyear launch agreement for 20 new Electron missions with Toyoko-based company Synspective. Rocket Lab said it is the largest commercial launch contract for Electron to date. McCormick — The spice company’s third-quarter results topped expectations, sending shares nearly 5% higher. McCormick’s adjusted earnings came in at 86 cents per share, topping the 76 cents expected from analysts polled by FactSet. Revenue was $2.02 billion, versus the $1.98 billion consensus estimate. Dollar Tree — Shares rose 1.3% after a Loop Capital upgrade to buy from hold. ” We believe the current US macroeconomic backdrop is highly favorable for Dollar Tree as the holiday selling season approaches,” analysts said. Nu Holdings — The Brazilian digital bank added nearly 6% after issuing a statement denying that it is pursuing a transaction with U.K. digital bank Monzo. Nu said it was responding to recent media speculation that it was acquiring Monzo. Micron — The memory chipmaker reported better-than-expected results for the fiscal fourth quarter. The company earned an adjusted $33.42 per share on revenue of $54.23 billion. Analysts polled by LSEG expected a profit of $31.61 per share on revenue of $51.07 billion. The stock fell slightly despite those results, though other semiconductor names moved higher. The Roundhill Memory ETF (DRAM) gained more than 1%, while the VanEck Semiconductor ETF (SMH) advanced 1%. —CNBC’s Fred Imbert contributed reporting.