On this edition of Stock Movers:

- Dollar General (DG) surged after increasing its annual guidance following a first quarter that topped projections. The discount chain also said it expects to mitigate a significant amount of the tariffs currently in place. The company sees same-store sales gaining as much as 2.5% this fiscal year, up from guidance in March calling for an increase as high as 2.2%. The retailer also nudged up expectations for earnings per share. “We are pleased with our start to the year,” Chief Executive Officer Todd Vasos said in the earnings release. The company said it’s seeing more higher-income shoppers make purchases, a sign that even wealthy consumers are looking for deals amid weakening sentiment.

- Constellation Energy (CEG) shares are up after it agreed to sell power from an Illinois nuclear plant to Meta Platforms Inc. as artificial intelligence sends power demand soaring. The parent company of Facebook, Instagram and WhatsApp signed a 20-year contract to buy 1,121 megawatts from the Clinton plant starting in mid-2027, when a state subsidy expires, according to a statement Tuesday. Constellation, the biggest US nuclear operator, and Meta didn’t provide financial details.Under the deal, Constellation will invest in boosting Clinton’s output. The company is also considering plans to build another reactor at Clinton, which already has federal approval for a second unit.

- Broadcom (AVGO) shares are rallying ahead of earnings this week and after it began shipping a new version of its data center switch chips that can boost the efficiency of AI accelerators, aiming to take a bigger role in the booming market for artificial intelligence computing. The company started delivering the Tomahawk 6 switch chips to customers over the weekend, and the product will be broadly available in July, said Ram Velaga, senior vice president and general manager of Broadcom’s Core Switching Group. Switches, a central piece of networking equipment, allow computers to communicate with one another. A single new Tomahawk 6 can do the work of six of the previous versions, Broadcom said.

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