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undefined | Stocks making the biggest moves midday: Meta Platforms, Delta Air Lines, Carnival, LyondellBasell & more

Meta Platforms surged more than 9 percent after the company unveiled its new artificial‑intelligence model, “Muse Spark,” which will power the digital assistant in the Meta AI app and later roll out across Facebook, Instagram, WhatsApp and Messenger. Across the broader market, housing‑related stocks rose as Treasury yields fell – the 10‑year Treasury slipped about 7 basis points to 4.27 %, lifting Zillow Group, Rocket Companies, the State Street SPDR S&P Homebuilders ETF (XHB) and Home Depot by roughly 2‑5 percent. In contrast, chemical and fertilizer stocks tumbled after news of a two‑week U.S.–Iran cease‑fire and the temporary reopening of the Hormuz Strait; LyondellBasell plunged more than 10 percent, Dow fell 8 percent, CF Industries dropped 9 percent and Intrepid Potash slid over 5 percent.

Airlines and travel companies rallied on the back of lower oil prices and the cease‑fire news. Delta Air Lines rose 6 percent despite issuing second‑quarter guidance below estimates, while United Airlines, Carnival, Southwest Airlines, Norwegian Cruise Line, Royal Caribbean and Expedia each gained between 7 and 10 percent. Energy stocks moved lower as oil slipped below $100 a barrel, with APA down more than 11 percent and major producers such as Exxon Mobil, Chevron, Occidental and Diamondback losing 5‑6 percent. Meanwhile, consumer and industrial names showed mixed strength: Levi Strauss jumped 13 percent after beating first‑quarter revenue and earnings expectations and raising its full‑year guide; RPM International rose over 13 percent on a fiscal‑third‑quarter beat; and Newmont advanced 3 percent as gold prices rose on the easing geopolitical tension.

Tech and memory stocks powered a broader equity rally. Micron surged more than 8 percent, Sandisk up 11 percent, Seagate up 6 percent and Western Digital up 9 percent, marking another strong showing for the sector in 2026. Mining heavyweight Freeport‑McMoRan climbed over 7 percent as copper rallied more than 3 percent on reduced fears of demand slowdown from the U.S.–Iran conflict. Finally, Super Micro Computer rose 4 percent after announcing an internal investigation into alleged Nvidia‑chip smuggling to China, though the company declined to comment further. Overall, the midday market snapshot reflected a blend of AI‑driven optimism, relief from geopolitical tension, and sector‑specific earnings beats.