Stocks making the biggest moves premarket: Oil stocks, Gap, Marvell Technology, Samsara and more

Check out the companies making headlines before the bell. Gap — The apparel maker’s stock slid about 8% after Gap reported fourth-quarter earnings of 45 cents per share, just shy of analysts’ forecast of 46 cents a share, per LSEG. Gap’s revenue came in line with expectations at $4.24 billion. Marvell Technology — The company, which makes integrated circuits and semiconductor products, saw shares surge 11% on the back of strong quarterly results led by artificial intelligence demand. For its fourth quarter, Marvell reported adjusted earnings of 80 cents per share on revenue of $2.22 billion. Analysts polled by LSEG were expecting earnings of 79 cents per share and revenue of $2.21 billion. Management said Marvell expects its year-over-year revenue growth to increase each quarter in fiscal 2027. Oil stocks — The group rose alongside crude prices, as tensions grew overnight around the U.S.-Iran conflict. Exxon Mobil and Chevron each gained more than 1%. Occidental Petroleum climbed 3.3%. U.S. oil and Brent scaled to levels not seen since 2024. Samsara — Shares jumped 11% after the telematics software company reported rosy guidance. Samsara sees full-year adjusted earnings ranging from 65 cents to 69 cents per share and revenue between $1.97 billion and $1.98 billion. The LSEG consensus called for 59 cents per share in earnings and $1.92 billion in revenue. The company also said in a press release it’s now using AI to automate workflows and enhance operations. CoreWeave — Oppenheimer initiated coverage of CoreWeave, giving the stock an “outperform” rating. It also put a $140 price target on shares, suggesting 87% upside. “Behind…our bullish stance is (1) the outsized TAM opportunity for AI-optimized IaaS; (2) CoreWeave’s strong competitive positioning against large hyperscalers/cloud vendors, and other neo-clouds; and (3) ability to deliver sustainable high FCF margin upon reaching maturity,” Oppenheimer analysts wrote." However, shares fell more than 1%. Guidewire Software — Shares gained nearly 4% after the software company for property and casualty insurers posted second quarter-results that exceeded expectations. Guidewire Software posted earnings of $1.17 per share, on an adjusted basis, on revenue of $359.1 million. Analysts polled by LSEG anticipated earnings of 77 cents on revenue of $342 million. Cooper Companies — The medical device company shed nearly 3% in extended trading after reporting revenue of $1.02 billion for the fourth quarter that matched, but did not top, analysts’ expectations. However, Cooper raised guidance for the full year, calling for adjusted earnings of $4.58 to $4.66 per share. That tops the FactSet consensus for $4.52 per share. Profit in the first quarter came in ahead of the Street’s estimates, as well. — CNBC’s Pia Singh and Fred Imbert contributed reporting