By Joe Woelfel, Mackenzie Tatananni, and Connor Smith

Stocks fell Tuesday, as the S&P 500 snapped its six-day winning streak in a slow day for the market.

These stocks were making moves:

Moderna rose 6.1%. The Food and Drug Administration will stick to its existing process for updating Covid-19 shots for older adults and those at a high risk of severe illness. It's a softer approach than Trump officials had seemed poised to take, according to Barron's reporter Josh Nathan-Kazis.

Home Depot, the biggest home-improvement retailer, reported fiscal first-quarter adjusted earnings of $3.56 a share, missing analysts' estimates of $3.60. Revenue of $39.9 billion beat forecasts of $39.3 billion. The company said it plans to keep prices unchanged despite new tariffs. Home Depot shares were down 0.6%. Competitor Lowe's, which reports quarterly earnings Wednesday, fell 1.4%.

Tesla was up 0.5% after CEO Elon Musk told a conference in Qatar that he expects to still be chief executive in five years, The Wall Street Journal reported. Tesla shares have declined 15% this year but have jumped about 44% since the company reported first-quarter earnings on April 22. Tesla sold 11,150 cars in China the past week, according to industry data tracked by Citi analyst Jeff Chung, up from 3,040 sold the week before. But that is down about 16% from the comparable week in 2024.

Shares of Tesla supplier Contemporary Amperex Technology, the Chinese battery giant, soared 16% in their Hong Kong debut on Tuesday. CATL raised almost $4.6 billion in the world's largest equity offering this year.

UnitedHealth gained 1.8%. The shares rose 8.2% on Monday, ending the session at $315.89. It was the stock's largest daily percentage increase since Nov 4, 2020, when it rose more than 10%, according to Dow Jones Market Data. The stock declined 23.3% last week after UnitedHealth CEO Andrew Witty resigned and the company suspended its 2025 outlook.

Nvidia fell 0.9%. CEO Jensen Huang said Monday the company would be opening its artificial-intelligence server platform to rival chip makers but he also warned the U.S. government's move to limit chip exports to China could hit revenue by $15 billion.

D-Wave Quantum jumped 26% as its sixth-generation quantum-computing system became available over the cloud. D-Wave management highlighted the technology's applications in tasks such as supply-chain optimization and resource allocation, outside the realm of what classical machines effectively can handle.

Amer Sports rose 19% after the sporting goods and apparel company topped first-quarter adjusted earnings estimates and raised fiscal-year profit guidance.

Hewlett Packard Enterprise gained 1.5% to $17.72 after analysts at Evercore ISI upgraded shares of the technology company to Outperform from In Line and raised their price target to $22 from $17.

Viking Holdings, the expedition cruises company, reported a narrower-than-expected first-quarter loss on a revenue jump of 25% to $897.1 million. The company said it was seeing "sustained strength in demand." Shares, however, declined 5% as analysts questioned whether Viking will be able to sustain pricing growth as the year progresses. Cruise line peers also declined. Norwegian Cruise Line Holdings was off 3.9%, Carnival fell 2.1%, and Royal Caribbean was down 1.9%.

Earnings reports were expected after the closing bell Tuesday from Palo Alto Networks, Keysight Technologies, and Toll Brothers.

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

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May 20, 2025 16:28 ET (20:28 GMT)

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