Check out the companies making the biggest moves midday: Alphabet — The YouTube and Google parent climbed 4% to an all-time high after rolling out its Gemini 3 artificial intelligence platform Tuesday. Google said Gemini 3 lets users get better answers to more complex questions and needs less prompting to find the context and intent behind requests. Eversource — The utility dropped more than 8% after the state of Connecticut rejected the company’s sale of its Aquarion Water unit. MP Materials — The rare earths mine operator rallied about 10% after it announced a partnership with the U.S. Defense Department and Saudi Arabia’s Maaden to develop a rare earth refinery . Goldman Sachs also initiated the stock earlier in the day with a buy rating . Nvidia — Shares rose 2% ahead of the company’s much-anticipated third-quarter earnings report, due after the bell. TransMedics — The organ transportation company jumped 10% after CEO Waleed Hassanein disclosed the purchase of 8,800 shares. Dycom Industries — Shares of the telecom and infrastructure builder jumped more than 9% after third-quarter earnings topped expectations, helped by the boom in AI data centers. Dycom also said it would buy an electrical contractor Power Solutions to help it meet the demand it’s seeing. In the third quarter, Dycom earned $3.63 per share, solidly outpacing the $3.20 per shar …
