
Matej Mikulic
Research expert covering health, pharma & medtech
Merck & Co. has solidified its position as one of the leading pharmaceutical companies worldwide, driven primarily by the exceptional performance of its blockbuster cancer drug Keytruda. In 2025, the company's total revenue reached 65 billion U.S. dollars, marking continued growth in a competitive global pharmaceutical market. This strong financial performance underscores the New Jersey-headquartered company's ability to deliver innovative treatments that address critical healthcare needs.
The company's oncology portfolio remains its most significant revenue driver. Keytruda generated over 31 billion U.S. dollars in revenue during 2025, making it not only Merck's flagship product but also the best-selling pharmaceutical drug globally. The cancer immunotherapy drug with the generic name pembrolizumab has consistently expanded its reach, treating various forms of cancer and securing a dominant position in the oncology market. In early 2026, Merck created a standalone oncology division to better focus on launching new cancer treatments and preparing for Keytruda's 2028 patent expiration in the U.S. market.
Within the highly competitive pharmaceutical landscape, Merck maintains a prominent position among industry leaders. As of early 2026, the company held a market capitalization of nearly 294 billion U.S. dollars, placing it among the top ten biotech and pharmaceutical companies globally. The company's prescription drug sales and substantial research and development investments demonstrate its commitment to maintaining long-term competitiveness and developing the next generation of breakthrough therapies.
Beyond its oncology dominance, Merck maintains a diversified pharmaceutical portfolio spanning multiple therapeutic areas including vaccines, diabetes treatment, cardiovascular health, and animal health. The company's geographic footprint is equally broad, with approximately half of its total revenue generated from its domestic United States market in 2025, while maintaining substantial presence across Europe, the Middle East, Africa, and Asia-Pacific regions. This balanced approach helps mitigate regional market risks while capitalizing on growth opportunities in different healthcare markets worldwide.

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Major 50 pharmaceutical companies - Rx sales and R&D spending 2024

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Leading 10 biotech and pharmaceutical companies based on market cap 2026

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R&D spending share of top pharmaceutical companies 2024

Pharmaceutical market size worldwide 2001-2029
Market size of the worldwide pharmaceutical industry from 2001 to 2024, with estimates for 2029 (in billion U.S. dollars)

Major 50 pharmaceutical companies - Rx sales and R&D spending 2024
Leading 50 global pharmaceutical companies by prescription sales and R&D spending in 2024 (in billion U.S. dollars)

Leading 10 biotech and pharmaceutical companies based on market cap 2026
Leading 10 biotech and pharmaceutical companies worldwide as of February 2026, by market capitalization (in billion U.S. dollars)

Major pharmaceutical products by sales worldwide 2025
Leading 20 pharmaceutical products by sales worldwide in 2025 (in billion U.S. dollars)

Leading global biopharma drugs by lifetime revenue 1997-2024
Projected leading 10 pharmaceutical products worldwide based on lifetime revenue between 1997 and 2024 (in billion U.S. dollars)

Merck & Co. revenue 2006-2025
Revenue of Merck & Co. from 2006 to 2025 (in million U.S. dollars)

Merck & Co. net income 2006-2025
Net income of Merck & Co. from 2006 to 2025 (in million U.S. dollars)

Merck & Co. capital expenditures 2009-2025
Capital expenditures of Merck & Co. from 2009 to 2025 (in million U.S. dollars)

Merck & Co. employees 2008-2025
Employees of Merck & Co. from 2008 to 2025

Pharmaceutical revenue of Merck & Co by therapy class 2025
Pharmaceutical revenue of Merck & Co. in 2025, by therapy area (in million U.S. dollars)

Merck & Co. revenues by region 2022-2025
Revenues of Merck & Co. by region from 2022 to 2025 (in million U.S. dollars)

Merck & Co.'s main-selling drugs 2025
Leading products of Merck & Co. based on revenue in 2025 (in million U.S. dollars)

Merck & Co.'s Keytruda revenue 2014-2025
Revenue of Keytruda from 2014 to 2025 (in million U.S. dollars)

GSK revenue 2006-2025
Revenue of GSK from 2006 to 2025 (in million British pounds)

Pfizer revenue 2006-2025
Revenue of Pfizer from 2006 to 2025 (in million U.S. dollars)

Sanofi revenue 2006-2025
Revenue of Sanofi from 2006 to 2025 (in million euros)

AstraZeneca's total revenue 2006-2025
Revenue of AstraZeneca from 2006 to 2025 (in million U.S. dollars)

Roche Group's total sales 2006-2025
Total sales of the Roche Group from 2006 to 2025 (in million Swiss francs)

Total global pharmaceutical R&D spending 2016-2030
Total global spending on pharmaceutical research and development from 2016 to 2030 (in billion U.S. dollars)

R&D spending share of top pharmaceutical companies 2024
R&D spending as revenue share of leading 10 pharmaceutical companies in 2024

Merck & Co. R&D expenditure 2006-2025
Research and development expenditure of Merck & Co. from 2006 to 2025 (in million U.S. dollars)

Top pharma companies worldwide 2026, by size of R&D pipeline
Leading 15 pharmaceutical companies worldwide by size of R&D pipeline as of 2026

AI readiness of big pharma companies 2025
Index of AI readiness of select big pharma companies as of 2025

Sales forecast of major pharmaceutical companies worldwide 2030
Sales forecast of leading pharmaceutical companies worldwide in 2030 (in billion U.S. dollars)

Sales forecast of top-selling drugs worldwide 2030
Projected best-selling pharmaceutical drugs worldwide in 2030 (in billion U.S. dollars)

New U.S. biosimilar launches of top products 2024-2029
New biosimilar launches of select major products in the United States between 2024 and 2029
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