Biogen (BIIB)

Underperform
We wouldn’t buy Biogen. Not only is its demand weak but also its falling returns on capital suggest it’s becoming less profitable. StockStory Analyst Team
Anthony Lee, Lead Equity Analyst
Kayode Omotosho, Equity Analyst

1. News

2. Summary

Underperform

Why We Think Biogen Will Underperform

Founded in 1978 and pioneering treatments for some of medicine's most complex challenges, Biogen (NASDAQ:BIIB) develops and markets therapies for neurological conditions, including multiple sclerosis, Alzheimer's disease, spinal muscular atrophy, and rare diseases.

  • Earnings per share decreased by more than its revenue over the last five years, showing each sale was less profitable
  • Annual sales declines of 7.4% for the past five years show its products and services struggled to connect with the market during this cycle
  • Projected sales decline of 6.9% over the next 12 months indicates demand will continue deteriorating
Biogen lacks the business quality we seek. There are superior stocks for sale in the market.
StockStory Analyst Team

Why There Are Better Opportunities Than Biogen

Biogen’s stock price of $129.79 implies a valuation ratio of 8.1x forward P/E. This is a cheap valuation multiple, but for good reason. You get what you pay for.

It’s better to pay up for high-quality businesses with higher long-term earnings potential rather than to buy lower-quality stocks because they appear cheap. These challenged businesses often don’t re-rate, a phenomenon known as a “value trap”.

3. Biogen (BIIB) Research Report: Q1 CY2025 Update

Biotech company Biogen (NASDAQ:BIIB) reported Q1 CY2025 results topping the market’s revenue expectations, with sales up 6.1% year on year to $2.43 billion. Its non-GAAP profit of $3.02 per share was 1% above analysts’ consensus estimates.

Biogen (BIIB) Q1 CY2025 Highlights:

  • Revenue: $2.43 billion vs analyst estimates of $2.24 billion (6.1% year-on-year growth, 8.6% beat)
  • Adjusted EPS: $3.02 vs analyst estimates of $2.99 (1% beat)
  • Management lowered its full-year Adjusted EPS guidance to $15 at the midpoint, a 4.6% decrease
  • Operating Margin: 12.8%, down from 24.4% in the same quarter last year
  • Free Cash Flow Margin: 9.1%, down from 22.1% in the same quarter last year
  • Market Capitalization: $17.72 billion

Company Overview

Founded in 1978 and pioneering treatments for some of medicine's most complex challenges, Biogen (NASDAQ:BIIB) develops and markets therapies for neurological conditions, including multiple sclerosis, Alzheimer's disease, spinal muscular atrophy, and rare diseases.

Biogen's portfolio includes several flagship products that address serious neurological disorders. For multiple sclerosis, the company markets TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, and TYSABRI. Its rare disease treatments include SPINRAZA for spinal muscular atrophy, QALSODY for amyotrophic lateral sclerosis (ALS) with SOD1 mutations, and SKYCLARYS for Friedreich's Ataxia.

The company has expanded into Alzheimer's disease treatment through its collaboration with Eisai on LEQEMBI, which targets amyloid plaques in the brain. Biogen also partners with Sage Therapeutics on ZURZUVAE for postpartum depression.

Beyond neurology, Biogen has diversified into biosimilars, marketing products like BENEPALI (etanercept), IMRALDI (adalimumab), and FLIXABI (infliximab) in international markets. These biosimilars provide more affordable alternatives to established biologic medications for conditions like rheumatoid arthritis and inflammatory bowel disease.

Biogen's business model combines internal research and development with strategic collaborations. For example, a patient with spinal muscular atrophy might receive SPINRAZA, administered by spinal injection several times yearly, to increase production of a protein essential for motor neuron survival. Similarly, a person with early Alzheimer's disease might receive LEQEMBI infusions to slow cognitive decline by removing amyloid plaques.

The company maintains manufacturing facilities in North Carolina and Switzerland, while also utilizing contract manufacturing organizations. Biogen generates revenue through direct sales to healthcare providers, specialty pharmacies, and distributors, with pricing often negotiated with insurance companies and government payers.

4. Therapeutics

Over the next few years, therapeutic companies, which develop a wide variety of treatments for diseases and disorders, face strong tailwinds from advancements in precision medicine (including the use of AI to improve hit rates) and growing demand for treatments targeting rare diseases. However, headwinds such as rising scrutiny over drug pricing, regulatory unknowns, and competition from larger, more resourced pharmaceutical companies could weigh on growth.

Biogen competes with pharmaceutical companies like Novartis (NYSE:NVS) and Roche (OTCQX:RHHBY) in multiple sclerosis treatments, Eli Lilly (NYSE:LLY) in Alzheimer's disease with its KISUNLA therapy, and Novartis and Roche again in the spinal muscular atrophy market with their respective ZOLGENSMA and EVRYSDI treatments.

5. Economies of Scale

Larger companies benefit from economies of scale, where fixed costs like infrastructure, technology, and administration are spread over a higher volume of goods or services, reducing the cost per unit. Scale can also lead to bargaining power with suppliers, greater brand recognition, and more investment firepower. A virtuous cycle can ensue if a scaled company plays its cards right.

With $9.82 billion in revenue over the past 12 months, Biogen has decent scale. This is important as it gives the company more leverage in a heavily regulated, competitive environment that is complex and resource-intensive.

6. Sales Growth

A company’s long-term sales performance is one signal of its overall quality. Any business can put up a good quarter or two, but many enduring ones grow for years. Biogen’s demand was weak over the last five years as its sales fell at a 7.4% annual rate. This was below our standards and is a sign of poor business quality.

Biogen Quarterly Revenue

We at StockStory place the most emphasis on long-term growth, but within healthcare, a half-decade historical view may miss recent innovations or disruptive industry trends. Biogen’s annualized revenue declines of 1.4% over the last two years suggest its demand continued shrinking. Biogen Year-On-Year Revenue Growth

This quarter, Biogen reported year-on-year revenue growth of 6.1%, and its $2.43 billion of revenue exceeded Wall Street’s estimates by 8.6%.

Looking ahead, sell-side analysts expect revenue to decline by 6.4% over the next 12 months, a deceleration versus the last two years. This projection doesn't excite us and implies its products and services will see some demand headwinds.

7. Operating Margin

Operating margin is an important measure of profitability as it shows the portion of revenue left after accounting for all core expenses – everything from the cost of goods sold to advertising and wages. It’s also useful for comparing profitability across companies with different levels of debt and tax rates because it excludes interest and taxes.

Biogen has been an efficient company over the last five years. It was one of the more profitable businesses in the healthcare sector, boasting an average operating margin of 25%.

Looking at the trend in its profitability, Biogen’s operating margin decreased by 9 percentage points over the last five years. This performance was caused by more recent speed bumps as the company’s margin fell by 13.1 percentage points on a two-year basis. We’re disappointed in these results because it shows its expenses were rising and it couldn’t pass those costs onto its customers.

Biogen Trailing 12-Month Operating Margin (GAAP)

In Q1, Biogen generated an operating profit margin of 12.8%, down 11.6 percentage points year on year. This contraction shows it was less efficient because its expenses grew faster than its revenue.

8. Earnings Per Share

We track the long-term change in earnings per share (EPS) for the same reason as long-term revenue growth. Compared to revenue, however, EPS highlights whether a company’s growth is profitable.

Sadly for Biogen, its EPS declined by 15.1% annually over the last five years, more than its revenue. This tells us the company struggled because its fixed cost base made it difficult to adjust to shrinking demand.

Biogen Trailing 12-Month EPS (Non-GAAP)

We can take a deeper look into Biogen’s earnings to better understand the drivers of its performance. As we mentioned earlier, Biogen’s operating margin declined by 9 percentage points over the last five years. This was the most relevant factor (aside from the revenue impact) behind its lower earnings; taxes and interest expenses can also affect EPS but don’t tell us as much about a company’s fundamentals.

In Q1, Biogen reported EPS at $3.02, down from $3.67 in the same quarter last year. Despite falling year on year, this print beat analysts’ estimates by 1%. Over the next 12 months, Wall Street expects Biogen’s full-year EPS of $15.82 to grow 1.3%.

9. Cash Is King

Although earnings are undoubtedly valuable for assessing company performance, we believe cash is king because you can’t use accounting profits to pay the bills.

Biogen has shown robust cash profitability, giving it an edge over its competitors and the ability to reinvest or return capital to investors. The company’s free cash flow margin averaged 21.2% over the last five years, quite impressive for a healthcare business.

Taking a step back, we can see that Biogen’s margin was unchanged during that time, showing its long-term free cash flow profile is stable.

Biogen Trailing 12-Month Free Cash Flow Margin

Biogen’s free cash flow clocked in at $222.2 million in Q1, equivalent to a 9.1% margin. The company’s cash profitability regressed as it was 13 percentage points lower than in the same quarter last year, prompting us to pay closer attention. Short-term fluctuations typically aren’t a big deal because investment needs can be seasonal, but we’ll be watching to see if the trend extrapolates into future quarters.

10. Return on Invested Capital (ROIC)

EPS and free cash flow tell us whether a company was profitable while growing its revenue. But was it capital-efficient? Enter ROIC, a metric showing how much operating profit a company generates relative to the money it has raised (debt and equity).

Although Biogen hasn’t been the highest-quality company lately because of its poor revenue and EPS performance, it historically found a few growth initiatives that worked. Its five-year average ROIC was 14.2%, higher than most healthcare businesses.

Biogen Trailing 12-Month Return On Invested Capital

We like to invest in businesses with high returns, but the trend in a company’s ROIC is what often surprises the market and moves the stock price. Unfortunately, Biogen’s ROIC has decreased over the last few years. We like what management has done in the past, but its declining returns are perhaps a symptom of fewer profitable growth opportunities.

11. Balance Sheet Assessment

Biogen reported $2.60 billion of cash and $6.62 billion of debt on its balance sheet in the most recent quarter. As investors in high-quality companies, we primarily focus on two things: 1) that a company’s debt level isn’t too high and 2) that its interest payments are not excessively burdening the business.

Biogen Net Debt Position

With $3.67 billion of EBITDA over the last 12 months, we view Biogen’s 1.1× net-debt-to-EBITDA ratio as safe. We also see its $130.9 million of annual interest expenses as appropriate. The company’s profits give it plenty of breathing room, allowing it to continue investing in growth initiatives.

12. Key Takeaways from Biogen’s Q1 Results

We were impressed by how significantly Biogen blew past analysts’ revenue expectations this quarter. On the other hand, its full-year EPS guidance slightly missed. Overall, this print was mixed. The stock traded up 1.5% to $122.87 immediately following the results.

13. Is Now The Time To Buy Biogen?

Updated: June 1, 2025 at 11:47 PM EDT

The latest quarterly earnings matters, sure, but we actually think longer-term fundamentals and valuation matter more. Investors should consider all these pieces before deciding whether or not to invest in Biogen.

We cheer for all companies serving everyday consumers, but in the case of Biogen, we’ll be cheering from the sidelines. For starters, its revenue has declined over the last five years, and analysts don’t see anything changing over the next 12 months. And while its impressive operating margins show it has a highly efficient business model, the downside is its declining EPS over the last five years makes it a less attractive asset to the public markets. On top of that, its diminishing returns show management's prior bets haven't worked out.

Biogen’s P/E ratio based on the next 12 months is 8.1x. While this valuation is optically cheap, the potential downside is huge given its shaky fundamentals. There are more exciting stocks to buy at the moment.

Wall Street analysts have a consensus one-year price target of $171.95 on the company (compared to the current share price of $129.79).

Although the price target is bullish, readers should exercise caution because analysts tend to be overly optimistic. The firms they work for, often big banks, have relationships with companies that extend into fundraising, M&A advisory, and other rewarding business lines. As a result, they typically hesitate to say bad things for fear they will lose out. We at StockStory do not suffer from such conflicts of interest, so we’ll always tell it like it is.

Enjoyed this research report? Then you will absolutely love StockStory Edge.

StockStory Edge provides you with in-depth research on more than 1,100 stocks including many that fly under-the-radar, helping you understand not only what to buy but also what to avoid.

Did you know that StockStory High Quality stocks generated a market-beating return of 183% from March 31, 2020 to March 31, 2025 vs an 117% return for the market? We achieve this outperformance by blending AI-powered analysis with the experitize of our analysts to identify opportunities overlooked by the market.

Sign up now (if you haven’t yet) and get access to our market-beating stocks picks, critical why stocks move alerts, earnings call insights and so much more.


OSZAR »