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Smaller biotech companies with drugs still in clinical trials are what big pharma is trying to buy, with acquisition offers coming in above 60% to 120% of the stock prices, even though companies don’t have drugs on the shelves. For investors who held shares in those acquired companies, that has meant seeing their stock jump by more than half overnight. There is no guarantee future deals will look the same, but the pace of acquisitions in 2025 suggests large pharma's appetite for biotech pipelines is not slowing down.
Longevity is an investment category forming around the science of aging, and private capital, research, and the FDA are moving quickly.
The drugs making some of the most money in biotech right now, like GLP-1s, cancer immunotherapies, and gene medicines, are the same ones showing early signs of potentially extending healthy life. Longevity investing used to mean putting capital behind unproven science. Increasingly, it means owning companies that are already generating revenue, like Novo Nordisk (NVO -0.95%), whose GLP-1 drug Wegovy is already one of the best-selling drugs in the world, according to industry publication Drug Discovery and Development.
Biotech stocks enter 2026 with real momentum. The industry is still recovering from a brutal three-year run leading into 2025, big pharma is paying a significant premium to acquire pipeline companies, which are companies with drugs under development, and the FDA is approving new drugs at near-record rates. The sector is grappling with patent expirations as longevity science is gaining traction.
Demographics create a demand floor that isn’t a forecast – the population data is set and is difficult to ignore. Adults 65 and older represent 17% of the U.S. population but make up 37% of all healthcare spending. Individuals aged both 60+ and 80+ will make up a growing share of the global population in the coming decades. That means each passing year brings a larger, older cohort of patients who need treatment for chronic conditions that affect 95% of adults over 60 as well as greater demand for longevity drugs.
For individual investors tracking the intersection of biotech stocks and longevity, the data points in the same direction across many angles: drug performance, new-drug pipelines, private capital, government support, and demographics. The question is no longer whether longevity is a viable investment theme but how much of the opportunity is already priced in and how much is still ahead.
Biotech stocks were genuinely cheap coming into 2025 after three consecutive down years. Recoveries from that starting point, with strong underlying trends, have the potential to last longer than hype-driven rallies.
Broad biotech funds only tell part of the story. Beyond the headline returns, different parts of the sector performed very differently in 2025. The differences show where individual investors might see the most compelling long-term cases.
The following returns reflect year-to-date performance in 2025 for thematic ETFs, used as subindustry proxies. Ten-year compound annual growth rates (CAGR), which is the average annual return over a 10-year period, reflect each fund’s full available history.
In 2025, biotechnology stocks had their best year since the pandemic, with the market sector’s two major indexes – the SDPR S&P Biotech ETX (NYSE:XBI) and iShares Biotech ETF (NYSE:IBB) – returning between 28% and 36%, more than double the S&P 500’s roughly 18%. That came after three consecutive years of underperformance. Was biotech’s strong 2025 a fluke or part of a sustained rebound? A few key trends might offer direction.
As biotech stocks staged their comeback in 2025, private investment in longevity science more than doubled, hitting $8.49 billion across 325 deals. The Food and Drug Administration (FDA) approved 50 new drugs in 2024 and 46 in 2025, including the first drug class that researchers have labeled potential longevity therapeutics. Big pharma spent more than $65 billion acquiring biotech companies through October 2025, surpassing full-year totals for 2024, 2022, and 2021.
Demographics serve as a strong foundation for potential growth in biotech and longevity. The global population aged 60 and older will reach 1.4 billion by 2030. The number of people aged 80 and older will nearly triple by 2050. The patients are here, and more are coming – and biotech stocks are increasingly the companies building the treatments they will need.
After three years of flat or negative returns, biotech stocks broke out in 2025. The biotech trends discussed above and throughout suggest that reversal could be more structural, meaning driven by lasting forces like an aging population and a mounting patent cliff, rather than cyclical, meaning just a temporary bounce.