US Top News and Analysis | Stocks making the biggest moves midday: Stanley Black & Decker, American Airlines, Dow, Marvell Technology & more

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Mid‑day trading on Monday saw a mixed set of moves, with Stanley Black & Decker climbing over 4% after noting that recent changes to Section 232 tariffs on aluminum, steel and related products would not materially affect its full‑year outlook. In contrast, energy‑infrastructure firm Fermi slumped more than 22% following the resignation of its CFO just days after CEO Toby Neugebauer’s departure; the company was originally co‑founded by former Energy Secretary Rick Perry to power AI data‑center projects. Psychedelic‑focused drug makers rode a surge after President Donald Trump’s executive order to speed up psychedelic‑medicine research, sending Atai Beckley up about 25% and Compass Pathways nearly 40%. Biogen rose roughly 3% after agreeing to pay $850 million for exclusive Chinese rights to the experimental immune‑disease drug felzartamab. Airlines came under pressure from renewed U.S.–Iran tensions, with American Airlines down nearly 5% and United, JetBlue and Delta each slipping 1‑2%. Shipping bottlenecks in the Strait of Hormuz lifted fertilizer and chemical names: CF Industries up 2%, Dow about 4% and LyondellBasell 2% after previous double‑digit losses. Tech stocks were active, as Marvell Technology jumped over 4% on reports of talks with Google to build two AI chips, while Broadcom fell about 2% despite a recent agreement to produce future Google AI chips. Insulation‑installer TopBuild surged more than 16% after QXO announced a $17 billion acquisition, even as QXO shares dropped 8% on the news. AST SpaceMobile fell 8% after a satellite was placed in the wrong orbit, though it expects insurance recovery and plans for regular 2026 launches. Cruise lines were weighed down by rising fuel costs and weaker demand, with Carnival down 1%, Norwegian Cruise Line nearly 5% and Royal Caribbean about 3%. (Reporting by CNBC’s Fred Imbert and Nick Wells.)

Read more: https://www.cnbc.com/2026/04/20/stocks-making-the-biggest-moves-midday-swk-aal-dow-mrvl.html

#AmericanAirlines #MarvellTechnology #AtaiBeckley #DonaldTrump #MilesEverson #TobyNeugebauer

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