Why Lantheus (LNTH) Stock Is Down Today

July 16, 2025 at 12:10 PM EDT

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What Happened?

Shares of radiopharmaceutical company Lantheus Holdings (NASDAQ: LNTH) fell 7.7% in the morning session after the stock hit a new 52-week low amid persistent investor concerns over rising competition and the company's recent financial results.

The sell-off extends a period of weakness for the company, pushing its shares to their lowest point in a year. While no specific news was released to account for the sharp drop, the negative sentiment appears linked to lingering effects from its first-quarter 2025 earnings report, where both revenue and earnings per share fell short of analyst expectations.

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What Is The Market Telling Us

Lantheus’s shares are somewhat volatile and have had 12 moves greater than 5% over the last year. In that context, today’s move indicates the market considers this news meaningful but not something that would fundamentally change its perception of the business.

The previous big move we wrote about was 5 days ago when the stock dropped 3.1% after the U.S. administration announced a sharp escalation in trade tensions by threatening new tariffs on Canada.

The wider market sentiment turned negative after the White House announced plans to impose a 35% tariff on Canadian imports, sparking renewed fears of a trade war. This news prompted a sell-off across major U.S. indexes, including the S&P 500 and the Dow Jones Industrial Average, as investors grew concerned about the potential economic impact of escalating protectionist policies.

The healthcare sector is especially vulnerable to such tensions due to its deeply integrated supply chains with Canada for pharmaceuticals and medical devices, meaning increased costs and potential disruptions.

Additionally, ongoing U.S. policy headwinds aimed at lowering drug prices and specific corporate challenges, like those faced by UnitedHealth Group, further compounded the sector's decline. As a result, the Health Care SPDR ETF (XLV) fell 1.0%, underperforming even as major indices pared some losses.

Lantheus is down 15.8% since the beginning of the year, and at $74.77 per share, it is trading 38.5% below its 52-week high of $121.61 from July 2024. Investors who bought $1,000 worth of Lantheus’s shares 5 years ago would now be looking at an investment worth $4,771.

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Why Lantheus (LNTH) Stock Is Down Today

What Happened?

What Is The Market Telling Us

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