Check out the companies making headlines in midday trading. Tesla — Shares declined about 4% after the electric vehicle company fell short of third-quarter delivery estimates . Deliveries came in at 462,890, versus a FactSet estimate of 463,310. Nike — The athletic apparel and footwear stock lost 6% after Nike withdrew its full-year guidance and postponed its investor day, which was originally scheduled for November, given an impending CEO change. However, the company posted fiscal first-quarter earnings and revenue that topped Wall Street’s estimates. Humana – The health-care stock plummeted more than 17% following its preliminary 2025 Medicare Advantage data. Humana said in an 8-K filing that 25% of its total members are currently enrolled in plans rated 4 stars and above for next year. That’s down from 94% in 2024. The company also said that it’s “exploring all available options to mitigate the expected 2026 revenue headwind.” Chinese stocks — Chinese stocks continued to rally on the back of sweeping stimulus measures in the country. JD.com surged 5%, rising for a fifth straight day. Another e-commerce name PDD popped 3%. Exchange-traded funds overseas that track Chinese stocks rallied, including a nearly 4% gain for KraneShares CSI China Internet ETF (KWEB), even as mainland markets were shut for a week-long holiday. Harley-Davidson – The stock slipped 3% after being downgraded to neutral from buy at Baird. The firm said it sees risks to the motorcycle maker’s third-quarter forecast after dealers reported weak retail activity, excess inventory and caustic sentiment. Lamb Weston Holdings — Shares of the french fry giant rose more than 2% after its fiscal first quarter topped estimates. Lamb Weston reported earnings of 73 cents per share on $1.65 billion of revenue. Analysts surveyed by LSEG expected 72 cents per share in earnings and $1.56 billion in revenue. Lamb Weston warned demand was soft but announced spending cuts to improve cash flow. Diamondback Energy — Shares rose 1% after Barclays upgraded the energy company to overweight from equal weight, citing its $26 billion merger agreement with Endeavor Energy Resources. Conagra Brands — The packaged foods company sank 9% on disappointing fiscal first-quarter results. Earnings per share came in 7 cents short of estimates. The company posted revenue of $2.79 billion, versus a FactSet estimate of $2.84 billion. — CNBC’s Lisa Han, Yun Li, Jesse Pound, Michelle Fox and Sean Conlon contributed reporting