Top 20 Biopharma Companies See Market Capitalization Drop Amid Industry Challenges
ByAinvest
Wednesday, Sep 10, 2025 12:17 pm ET2min read
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Alnylam Pharmaceuticals stands out as the company with the largest market capitalisation growth, rising by 21.8% to $42.5 billion. This growth is largely driven by the strong performance of its RNA interference (RNAi) therapeutic, Amvuttra, for transthyretin amyloidosis cardiomyopathy (ATTR-CM). Amvuttra saw a 59% year-on-year (YoY) increase in global sales to $310 million in the first quarter (Q1) 2025 [1].
Novartis reported a 7.7% increase in market capitalisation in Q2 2025, primarily due to its strong financial performance. The company's blockbuster drug sales, including Entresto, Cosentyx, Kesimpta, and Kisqali, contributed to this growth. Additionally, Novartis acquired Regulus Therapeutics in June 2025 for $1.7 billion, strengthening its renal disease portfolio. The acquisition includes farabursen, an miRNA17-targeting antisense oligonucleotide, which is expected to enter pivotal Phase III trials in Q3 2025 [1].
However, the majority of the top 20 players experienced a decrease in market capitalisation. Bristol Myers Squibb saw the largest decline of 22.9%, following a mixed Q1 2025 financial performance and negative trial results. Notably, the company’s Phase III ARISE trial investigating Cobenfy as an adjunctive therapy to atypical antipsychotics for schizophrenia did not meet its primary endpoint of change in the Positive and Negative Syndrome Scale (PANSS) [1].
Regeneron and Sanofi also faced market capitalisation declines of 18.7% and 13.8%, respectively, due to the failure of itepekimab to meet its primary endpoint in the Phase III AERIFY-2 trial. Itepekimab, a partnered IL-33-targeting monoclonal antibody, aimed to achieve a reduction in moderate or severe exacerbations of chronic obstructive pulmonary disease but fell short [1].
Investor sentiment has been impacted by the US tariff announcements, with plans to impose 250% tariffs on pharmaceutical imports expected to further affect share prices over Q3 2025. Biopharmaceutical companies are beginning to experience mounting pressures related to drug pricing in the US, as seen with Regeneron’s Eylea, leading to significant declines in market capitalisation in Q2 2025. Nonetheless, some companies, such as Alnylam and Novartis, have shown resilience amid these challenges by demonstrating strong financial performance [1].
The ongoing challenges in the biopharmaceutical industry, including tariffs and drug pricing pressures, have led to a significant decline in market capitalisation for the top 20 companies. As these pressures persist, investors should closely monitor the financial performance and strategic moves of these companies to gauge their resilience and future prospects.
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The top 20 biopharma market caps have fallen 5.7% from $3.92 trillion to $3.70 trillion due to industry challenges. Alnylam saw the largest growth, up 21.8% to $42.5 billion, driven by Amvuttra's strong performance. Novartis reported a 7.7% increase due to strong financial performance and the acquisition of Regulus Therapeutics. Bristol Myers Squibb saw the largest decline of 22.9% following a mixed Q1 performance and negative trial results.
The top 20 biopharmaceutical companies have seen a combined market capitalisation fall by 5.7%, from $3.92 trillion on 31 March 2025 to $3.70 trillion on 30 June 2025, according to GlobalData [1]. This downturn is primarily attributed to the ongoing tariffs imposed by the Trump administration and increasing drug pricing pressures in the US.Alnylam Pharmaceuticals stands out as the company with the largest market capitalisation growth, rising by 21.8% to $42.5 billion. This growth is largely driven by the strong performance of its RNA interference (RNAi) therapeutic, Amvuttra, for transthyretin amyloidosis cardiomyopathy (ATTR-CM). Amvuttra saw a 59% year-on-year (YoY) increase in global sales to $310 million in the first quarter (Q1) 2025 [1].
Novartis reported a 7.7% increase in market capitalisation in Q2 2025, primarily due to its strong financial performance. The company's blockbuster drug sales, including Entresto, Cosentyx, Kesimpta, and Kisqali, contributed to this growth. Additionally, Novartis acquired Regulus Therapeutics in June 2025 for $1.7 billion, strengthening its renal disease portfolio. The acquisition includes farabursen, an miRNA17-targeting antisense oligonucleotide, which is expected to enter pivotal Phase III trials in Q3 2025 [1].
However, the majority of the top 20 players experienced a decrease in market capitalisation. Bristol Myers Squibb saw the largest decline of 22.9%, following a mixed Q1 2025 financial performance and negative trial results. Notably, the company’s Phase III ARISE trial investigating Cobenfy as an adjunctive therapy to atypical antipsychotics for schizophrenia did not meet its primary endpoint of change in the Positive and Negative Syndrome Scale (PANSS) [1].
Regeneron and Sanofi also faced market capitalisation declines of 18.7% and 13.8%, respectively, due to the failure of itepekimab to meet its primary endpoint in the Phase III AERIFY-2 trial. Itepekimab, a partnered IL-33-targeting monoclonal antibody, aimed to achieve a reduction in moderate or severe exacerbations of chronic obstructive pulmonary disease but fell short [1].
Investor sentiment has been impacted by the US tariff announcements, with plans to impose 250% tariffs on pharmaceutical imports expected to further affect share prices over Q3 2025. Biopharmaceutical companies are beginning to experience mounting pressures related to drug pricing in the US, as seen with Regeneron’s Eylea, leading to significant declines in market capitalisation in Q2 2025. Nonetheless, some companies, such as Alnylam and Novartis, have shown resilience amid these challenges by demonstrating strong financial performance [1].
The ongoing challenges in the biopharmaceutical industry, including tariffs and drug pricing pressures, have led to a significant decline in market capitalisation for the top 20 companies. As these pressures persist, investors should closely monitor the financial performance and strategic moves of these companies to gauge their resilience and future prospects.

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