These Stocks Moved the Most Today: Delta, PepsiCo, Tesla, Ferrari, Costco, Oklo, MP Materials, and More
Oct 09, 2025 05:59:00 -0400 by Joe Woelfel | #TechnologyTraders working at the New York Stock Exchange. (Photo Credit: NYSE)
Key Points
- Tesla stock falls as the National Highway Traffic Safety Administration opens an investigation into the EV company’s Full Self-Driving driver-assistance technology.
- Costco Wholesale reports an 8% sales increase to $26.6 billion in the five weeks ended Oct. 5.
- PepsiCo’s third-quarter adjusted earnings and revenue beat analysts’ estimates, while Delta tops forecasts and firms up its full-year guidance.
Stocks fell Thursday following record closing highs for the S&P 500 and Nasdaq Composite. Delta Air Lines and PepsiCo, meanwhile, kicked off the third-quarter earnings season.
These stocks made notable moves Thursday:
Shares of Delta Air Lines rose 4.3% after third-quarter earnings from the carrier beat Wall Street estimates. Delta reported adjusted earnings of $1.71 a share on revenue of $16.67 billion. Delta also firmed up its full-year guidance, saying it expects earnings of $6 a share, up from a range between $5.25 and $6.25. Analysts had been expecting $5.80.
Fellow carriers United Airlines and American Airlines rose 3.3% and declined 1.7%, respectively.
PepsiCo gained 4.2% after the beverage and snack company posted third-quarter adjusted earnings of $2.29 a share, topping analysts’ estimates of $2.26. Revenue of $23.94 billion also beat forecasts. The company also named Steve Schmitt as chief financial officer. Schmitt joins PepsiCo from Walmart, where he currently serves as executive vice president and chief financial officer for Walmart U.S.
Advanced Micro Devices fell 1.1%. Shares of the chip maker ended Wednesday’s session up 11% at $235.56, a record high. The stock was boosted by a deal with OpenAI to power 6 gigawatts of AI infrastructure with its graphics processing units. As part of the agreement, OpenAI will receive a warrant to buy up to 160 million AMD shares.
Tesla dropped 0.7% as the National Highway Traffic Safety Administration opened an investigation into the electric-vehicle company’s Full Self-Driving driver-assistance technology. The NHTSA said its Office of Defects Investigation would open a “preliminary evaluation to assess the scope, frequency, and potential safety consequences of FSD executing driving maneuvers that constitute traffic safety violations.” It cited two scenarios: cars traveling into an intersection on a red light, and cars changing lanes into oncoming traffic.
Ferrari sank 15% in the U.S. after the luxury auto maker issued guidance for 2030 that was below analysts’ expectations. Ferrari also scaled back its plans to go electric, saying electric vehicles would make up just 20% of its sports car model lineup by 2030. Ferrari previously vowed that 40% of its lineup would be electric by the end of the decade.
Akero Therapeutics rose 16% to $54.08 after Novo Nordisk reached an agreement to acquire the biotech, which is currently developing a treatment for obesity-linked liver disease. Novo Nordisk said it would buy Akero for $54 a share in cash, or $4.7 billion upfront, and will pay $6 more if its lead asset Efruxifermin secures U.S. approval. Novo Nordisk is the Danish maker of the blockbuster diabetes and obesity drugs Ozempic and Wegovy.
Costco Wholesale gained 3.1% after the membership warehouse retailer posted sales that rose 8% to $26.6 billion in the five weeks ended Oct. 5. Comparable-store sales rose 5.7% overall, with U.S. sales up 5.1%. Costco said digitally-enabled comparable sales, previously referred to as e-commerce sales, rose 26%.
MP Materials was up 2.5%. Shares of the rare-earth excavator rose after China tightened its control over critical minerals used to make high-tech products including electric vehicles and jet fighters, The Wall Street Journal reported. The U.S. Department of Defense recently acquired a stake of $400 million in MP Materials.
Oklo rose 2.5% to $138.10. Canaccord Genuity initiated coverage on shares of the nuclear start-up at Buy with a $175 price target, representing a Wall Street high. “While rising AI demand may influence the growth trajectory, we anticipate strong long-term demand for nuclear energy regardless,” analysts with the firm wrote.
Serve Robotics surged 29% to $17.68 after unveiling a multiyear strategic partnership with DoorDash to expand its footprint in the U.S. The company designs and develops autonomous food delivery robots powered by AI. DoorDash stock fell 2%. The company unveiled its own self-driving delivery robot, Dot, last week.
Freeport-McMoRan rose 1.1%. The stock climbed 5.3% on Wednesday after two Wall Street analysts issued positive calls on shares of the copper miner. Citi upgraded the stock to Buy and Well Fargo initiated coverage with a Buy rating, with analysts from both firms citing expectations for higher copper prices.
AZZ Inc., the metal coatings and welding services company, tumbled 4.9% after reporting second-quarter adjusted earnings and revenue that missed analysts’ estimates. AZZ reiterated its fiscal-year guidance, calling for adjusted earnings of $6 a share on sales of $1.675 billion at the midpoint.
Shares of Neogen jumped 16% after the food safety company met earnings expectations for its fiscal first quarter and revealed companywide layoffs.
Earnings reports were expected after the closing bell Thursday from Levi Strauss and Applied Digital.
Write to Joe Woelfel at joseph.woelfel@barrons.com and Mackenzie Tatananni at mackenzie.tatananni@barrons.com