These Stocks Moved the Most Today: Nvidia, Delta, WK Kellogg, MP Materials, Vertiv, Helen of Troy, and More

Traders work on the floor of the New York Stock Exchange. (Michael M. Santiago/Getty Images)

Stocks traded higher Thursday as Wall Street ignored the latest tariff announcements from President Donald Trump, including a 50% tariff on Brazilian goods.

These stocks made notable moves Thursday:

Nvidia was up 0.8%, building on yesterday’s record close and pushing its market capitalization north of $4 trillion. It’s the first U.S. firm to reach and close above that level, according to Dow Jones Market Data. Apple held a previous record of $3.915 trillion.

Delta Air Lines jumped 12% after second-quarter earnings beat expectations and the carrier restored its full-year guidance after pulling it in April. Shares of United Airlines Holdings were up 14%.

MP Materials surged 51%. The dazzling gains came after the Department of Defense struck agreements with the mining company to accelerate the buildout of the country’s rare earth magnet supply chain.

WK Kellogg soared 31% to $22.86 after Italian candy maker Ferrero reached a deal to buy the cereal company. Family-owned Ferrero will acquire Kellogg, the company behind Froot Loops and Frosted Flakes cereals, for $23 a share in cash, or an enterprise value of $3.1 billion.

Freeport-McMoRan and Southern Copper rose 3.6% and 2.3%, respectively, after Trump said a new 50% tariff on copper would go into effect on Aug. 1.

PTC tumbled 7.6%. The stock ended Wednesday’s session up 18% after Bloomberg reported that Autodesk was weighing an acquisition of the engineering-software provider. As both companies make computer-aided design software, a deal would consolidate market share. Autodesk declined 6.9% on Thursday.

Vertiv Holdings declined 6% after Amazon.com announced a new liquid cooling system for its AI servers. Vertiv is a leading maker of cooling equipment for data centers.

Conagra Brands was down 4.4%. The maker of Reddi-wip and Slim Jims posted fiscal fourth-quarter earnings and sales that missed analysts’ expectations, but guidance weighed the most on shares. Conagra warned that tariffs would increase the cost of goods sold by roughly 3% each year beginning in fiscal 2026.

Helen of Troy sank 23% after the owner of brands including Hydro Flask and Braun Thermometers reported an 11% drop in net sales in its fiscal first quarter. The company also posted a loss of $450.7 million, which compares to net income of $6.2 million a year earlier. Interim CEO Brian Grass said tariff-related impacts accounted for roughly 8 percentage points of the first-quarter’s revenue decline.

Write to Joe Woelfel at joseph.woelfel@barrons.com and mackenzie.tatananni@barrons.com