Check out the companies making the biggest moves in midday trading: Fannie Mae , Freddie Mac — Shares of the mortgage financing companies rallied after Pershing Square Capital Management’s Bill Ackman said in an X post late Sunday that the stocks are “stupidly cheap.” The billionaire investor suggested shares could rise 10-fold. Shares of Federal National Mortgage Association (Fannie Mae) and Federal Home Loan Mortgage (Freddie Mac) rose more than 30% each in trading Monday. Boston Scientific — The medical device company’s stock tumbled more than 9% after Raymond James downgraded it to outperform from strong buy as it cut estimates below Wall Street’s consensus. The firm said trends are weakening in its key growth areas. Palo Alto Networks — Shares of the cybersecurity developer jumped more than 7% after CEO Nikesh Arora disclosed Friday that he purchased $10 million worth of shares on the open market. United Therapeutics — The pharmaceutical company’s stock rose nearly 13%, hitting a 52-week high, after it reported upbeat phase 3 clinical trial results for Tyvaso, its main product. United Therapeutics said it would seek a priority review from the Food and Drug Administration to expand the drug’s label to include idiopathic pulmonary fibrosis, a progressive lung disease. Tyvaso already treats two forms of high blood pressure in the lungs. Alternative asset managers — The Department of Labor proposed a rule that would allow 401(k) plans to more easily include alternative assets such as cryptocurrency, real estate and private market assets. The news sent shares of alternative asset managers higher. Blackstone and Carlyle gained more than 4%, while Blue Owl and Apollo Global added more than 3%. Sysco — The wholesale food distributor fell more than 11% after it agreed to buy Jetro Restaurant Depot for a total enterprise value of $29.1 billion. The deal is expected to close in Sysco’s 2027 fiscal third quarter, with the company calling the transaction “immediately accretive.” However, investors are focusing on the debt associated with the deal. Avis — Shares sunk more than 3% after surging more than 48% last week. Car rental companies were seen as beneficiaries from the chaos at U.S. airports due to the Department of Homeland Security Funding Impasse, though it appeared Monday investors were taking some profits from Avis’ surge. Alcoa — The aluminum company rallied more than 9% as aluminum prices were up more than 4.5% after critical infrastructure for the metal in the Middle East was hit by Iranian missile strikes. CrowdStrike — Shares of the cybersecurity giant rose more than 4% after it got some support from analysts on the Street. Wolfe Research upgraded the stock to outperform, saying that CrowdStrike will benefit from increased cyber risks from artificial intelligence rather than have its business model disrupted by the technology, while Morgan Stanley named the stock a top pick. CrowdStrike had been off more than 21% in 2026 on fears AI will replace cybersecurity technology. — CNBC’s Christina Cheddar Berk, Fred Imbert and Nick Wells contributed reporting
