We recently published our article 5 Biotech Stocks to Buy Now as Novo Nordisk (NVO) Shakes Up the $100B Weight-Loss Market. To read the full article, head on to 10 Biotech Stocks to Buy Now as Novo Nordisk (NVO) Shakes Up the $100B Weight-Loss Market. In this piece, we take a closer look at Regeneron Pharmaceuticals Inc. (NASDAQ:REGN) to examine its latest developments, pipeline progress, and why it continues to draw attention from investors.

Novo Nordisk A/S (NYSE: NVO) helped transform obesity treatment from a relatively overlooked pharmaceutical category into one of Wall Street’s biggest healthcare stories. The success of GLP-1 weight-loss drugs proved that effective obesity medicines could generate blockbuster sales, attract millions of patients and reshape how doctors treat metabolic disease.

The opportunity is enormous. Obesity affects hundreds of millions of people worldwide and is associated with type 2 diabetes, cardiovascular disease, fatty-liver disease, sleep apnea and other serious health conditions. Yet only a small percentage of eligible patients currently receives modern prescription weight-loss treatments. That gap explains why analysts believe the global weight-loss drug market could eventually exceed $100 billion in annual sales.

The Next Winners May Offer More Than Weight Loss

The next phase of the obesity drug boom will not be based solely on which treatment produces the highest percentage of weight loss. Drugmakers are now developing oral GLP-1 pills, monthly injections, dual- and triple-hormone therapies, amylin-based medicines and treatments designed to preserve muscle while patients lose fat.

Here is an important piece of trivia: weight loss does not come entirely from body fat. Patients may also lose lean tissue, including muscle, which has pushed biotechnology companies to develop complementary treatments that improve the quality of weight loss. Others are working on easier dosing, fewer gastrointestinal side effects and medicines that may also improve liver, heart and metabolic health.

Oral obesity treatments could become especially disruptive. Many patients dislike needles, while pills may be easier to manufacture, distribute and use. A successful weight-loss pill would not necessarily need to outperform every injectable treatment. Convenience alone could allow it to capture a meaningful portion of the growing obesity treatment market.

Why Biotech Stocks Are Entering the Spotlight

Novo Nordisk A/S (NYSE: NVO) remains the company framing this story, but it is not included in the top 10 ranking. Instead, the countdown focuses on biotechnology stocks attempting to benefit from the market Novo Nordisk helped create.

Some of these companies are developing direct competitors to existing GLP-1 drugs. Others are pursuing different mechanisms, longer-lasting treatments or therapies that could eventually be prescribed alongside popular weight-loss medicines. Their success could lead to major commercial partnerships, acquisition interest or sharp valuation increases.

The risks are equally significant. Obesity drug trials are expensive, clinical results can disappoint and smaller biotechnology companies may need additional financing before reaching commercialization. Investors searching for the best biotech stocks to buy now should therefore examine clinical progress, cash reserves, safety data, competitive advantages and upcoming catalysts—not just ambitious weight-loss claims.

The following countdown identifies 10 biotechnology stocks positioned to participate in the next stage of the $100 billion weight-loss drug market, beginning with number 10 and moving toward the company offering the strongest combination of scientific promise, market opportunity and investment potential.

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Our Methodology

In order to arrive to our list of the 10 Biotech Stocks to Buy Now as Novo Nordisk (NVO) Shakes Up the $100B Weight-Loss Market, we examined the trending biotech stocks and based our ranking on each company’s clinical progress, treatment differentiation, market opportunity, financial position, upcoming catalysts, partnership potential and overall risk-reward profile within the rapidly growing obesity and metabolic-disease market.

5 Biotech Stocks to Buy Now as Novo Nordisk (NVO) Shakes Up the $100B Weight-Loss Market

5. Regeneron Pharmaceuticals Inc. (NASDAQ:REGN)

Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) takes fifth place because it is attacking two of the weight-loss market’s next major questions: how to deliver powerful obesity treatment and how to prevent patients from losing too much lean muscle. The company’s growing metabolic portfolio now includes olatorepatide, a GLP-1 and GIP receptor agonist licensed for global development, as well as trevogrumab, an antibody designed to block myostatin and help preserve muscle during pharmacological weight loss.

In March 2026, Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) announced that olatorepatide had produced body-weight loss of as much as 19% at 48 weeks in a Phase 3 trial conducted in Chinese patients. Regeneron planned to begin a global Phase 3 registration program later in 2026. That asset gives the company a potential stand-alone obesity drug rather than leaving it dependent solely on combinations with a competitor’s GLP-1 medicine.

The Phase 2 COURAGE study provides the more differentiated element of the story. When trevogrumab was combined with semaglutide, the regimen prevented approximately half of the lean-mass loss associated with semaglutide while increasing fat-mass reduction. Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) continued presenting muscle and body-composition research during 2026. Muscle-preserving obesity treatments could eventually become a market worth more than $30 billion by 2035, according to an estimate cited by Reuters, particularly for older patients and others vulnerable to weakness or functional decline.

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Disclosure: No relevant interests to disclose. This article was originally published on BioTech HealthX.