Check out some of the companies making the biggest moves midday: Broadcom — The chipmaker jumped 10% after agreeing with OpenAI to jointly build and deploy custom artificial intelligence accelerators , the first public plan released by the companies, which have been working together for 18 months to expand AI infrastructure. Bloom Energy — The energy stock soared 30% after the maker of hydrogen and natural gas power generators struck a $5 billion partnership with Brookfield Asset Management to install fuel cells in artificial intelligence data centers. Ciena – The software maker jumped more than 4% after BNP Paribas upgraded the stock to outperform from neutral. The investment bank also hiked its price target to $185 from $120, implying 19% upside from Friday’s close. Jefferies Financial Group – The investment bank rose about 3% after CEO Rich Handler sought to quell investor concerns about the bankruptcy of First Brands. Jefferies could incur financial losses from its indirect investments in First Brands but the investment bank has ample liquidity to absorb the impact, Handler said in a letter. Shake Shack — The burger chain added 4% on the back of Jefferies’ upgrade to hold from underperform. Jefferies said the risk-reward ratio is more balanced following a recent slide in the shares. Estee Lauder — The maker of Clinique and Origins cosmetics popped 5% after Goldman Sachs upgraded the stock to buy. The bank also called for 3 …