U.S. Market Benchmark
Healthcare Stocks in the S&P 500 Index
Comprehensive guide to the pharmaceutical, biotech, and managed care leaders defining the S&P 500 healthcare sector in 2026.
This page is for informational and educational purposes only and does
not constitute investment advice. Always consult a qualified financial
professional before making investment decisions.
Navigating Healthcare Stocks in the S&P 500 Index provides investors with exposure to some of the most stable and innovative companies in the global economy. As a key component of the broader S&P 500 section, this group includes massive pharmaceutical giants, medical device innovators, and managed care providers. In 2026, the sector continues to act as a defensive pillar, supported by long-term demographic tailwinds and constant clinical breakthroughs. Whether you are reviewing the List of Healthcare Companies for individual picks or index-wide trends, understanding subsector weightings is critical for portfolio balance. The following data highlights the market leaders and financial benchmarks currently defining the benchmark healthcare roster.
Key Takeaways
01
Index Weight & Influence
The healthcare sector remains one of the largest weights in the S&P 500, with leaders like UnitedHealth Group Incorporated (UNH) exerting significant influence on index performance.
02
Defensive Characteristics
Healthcare demand is largely non-cyclical, making these stocks a common "flight to safety" during periods of broader market volatility or economic uncertainty.
03
Subsector Diversity
The sector is split between high-growth biotech, stable pharmaceutical dividend payers, and highly regulated managed care organizations.
04
Innovation Premium
Companies like Johnson & Johnson (JNJ) balance mature consumer health or pharma lines with intensive R&D spending to maintain competitive moats.
Top Healthcare Stocks in the S&P 500 Index by Market Cap (2026)
The following table identifies the largest healthcare constituents in the S&P 500, ranked by market capitalization and index influence.
| Rank | Ticker | Company | Subsector | Market Cap | YTD % | P/E Ratio | Div Yield |
|---|---|---|---|---|---|---|---|
| 1 | LLY | Eli Lilly | Pharma | $742B | +12.4% | 55.2 | 0.7% |
| 2 | UNH | UnitedHealth | Managed Care | $485B | +2.1% | 18.4 | 1.6% |
| 3 | JNJ | Johnson & Johnson | Diversified | $382B | -1.5% | 14.8 | 3.1% |
| 4 | ABBV | AbbVie | Biotech/Pharma | $315B | +5.2% | 15.1 | 3.4% |
| 5 | MRK | Merck | Pharma | $298B | +8.7% | 13.5 | 2.5% |
| 6 | TMO | Thermo Fisher | Life Sciences | $215B | +4.1% | 24.6 | 0.3% |
| 7 | ABT | Abbott Labs | Medical Devices | $195B | +1.4% | 22.1 | 1.9% |
| 8 | DHR | Danaher | Life Sciences | $182B | +3.5% | 28.4 | 0.4% |
| 9 | PFE | Pfizer | Pharma | $165B | -4.2% | 10.2 | 5.8% |
| 10 | AMGN | Amgen | Biotech | $158B | +6.2% | 14.1 | 2.9% |
Market data is approximate and for informational purposes only. Data reflects early Q2 2026 figures. Not a recommendation to buy or sell.
Healthcare Stocks in the S&P 500 Index — Complete Company List
Healthcare Stocks in the S&P 500 Index
Animal Health
- IDEXX Laboratories, Inc. (IDXX) (Diagnostic and information technology-based solutions)
- Zoetis Inc. (ZTS) (Animal health medicines and vaccines, diagnostic products and genetic tests)
Biotech and Biopharmaceutical Companies
- AbbVie Inc. (ABBV) (Biopharmaceutical company: immunology, kidney disease, liver disease, neuroscience, oncology, women’s health)
- Alexion Pharmaceuticals, Inc. (ALXN) (Biopharmaceutical company: nocturnal hemoglobinuria, atypical hemolytic uremic syndrome, hypophosphatasia, Lysosomal Acid Lipase Deficiency)
- Amgen Inc. (AMGN) (Therapeutics: cardiovascular, inflammation, oncology, biosimilars)
- Biogen Inc. (BIIB) (Biopharmaceutical company: therapies for immunology, hematology, multiple sclerosis, neurology)
- Bristol-Myers Squibb Company (BMY) (Biopharmaceutical company: cancer, cardiovascular disease, hepatitis B and hepatitis C, HIV/AIDS, rheumatoid arthritis)
- Celgene Corporation (CELG) (Biopharmaceutical company: cancer and immune-inflammatory related diseases)
- Gilead Sciences, Inc. (GILD) (Biopharmaceutical company: cardiovascular, human immunodeficiency virus (HIV)
- Incyte Corporation (INCY) (Biopharmaceutical company: small molecule drugs; oncology and inflammation)
- Nektar Therapeutics (NKTR) (Biopharmaceutical company: anti-infective, anti-viral, immunology, oncology, pain)
- Regeneron Pharmaceuticals, Inc. (REGN) (Biopharmaceutical company: Antibody technologies; cardiovascular, diabetes, eye diseases, infectious diseases, inflammation, oncology, pain)
- Vertex Pharmaceuticals Incorporated (VRTX) (Cystic fibrosis; additional ongoing research programs aimed at other serious and life-threatening diseases)
Diagnostics
- Quest Diagnostics Inc. (DGX) (Diagnostic testing services, diagnostic products, clinical trials testing, healthcare IT and wellness and risk management services)
Distribution
- AmerisourceBergen Corporation (ABC) (Pharmaceutical sourcing and distribution)
- Cardinal Health, Inc. (CAH) (Drug and healthcare product distribution, consumer healthcare products, direct-to-home medical supplies distributor)
- Henry Schein, Inc. (HSIC) (Health care products and services for animal health, dental and medical practitioner markets)
- McKesson Corporation (MCK) (Pharmaceutical distributor; software; automation technology; business services and consulting; Health Mart retail pharmacy franchises)
Healthcare Facilities
- DaVita Inc. (DVA) (Kidney dialysis services, operator of medical groups and physician networks)
- Envision Healthcare Corporation, Inc. (EVHC) (Medical transportation services; ambulatory surgery center management, facility-based physician services)
- HCA Holdings, Inc. (HCA) (Hospitals and surgery centers)
- Laboratory Corporation of America Holdings (LH) (Independent clinical laboratory)
- Universal Health Services, Inc. (UHS) (Acute care hospitals, behavioral health facilities, ambulatory centers)
Healthcare Services
Health Insurance
- Aetna Inc. (AET) (Behavioral health, dental, disability, group life, medical and pharmacy)
- Anthem, Inc. (ANTM) (Health care plans)
- Centene Corporation (CNC) (Governmental programs for uninsured and under-insured)
- Cigna Corporation (CI) (Behavioral, dental, group disability, group life and pharmacy)
- Humana Inc. (HUM) (Group health, Medicare plans and supplemental insurance)
- UnitedHealth Group Incorporated (UNH) (Health benefits and services)
Medical Devices
- Abiomed Inc. (ABMD) (Heart support and recovery products and services; heart pumps, artificial heart)
- Agilent Technologies, Inc. (A) (Provides equipment, services, consumables and software to laboratories)
- Align Technology, Inc. (ALGN) (Dental equipment and devices)
- Baxter International Inc. (BAX) (Renal and hospital products)
- Becton, Dickinson and Company (BDX)
- Boston Scientific Corporation (BSX) (Products used to diagnose or treat: areas of focus include digestive, heart, pulmonary, urological, vascular, women’s health)
- Cooper Companies, Inc. (The) (COO) (Medical devices and equipment: Soft contact lens, medical devices and procedure-based products used in the women’s healthcare market)
- Danaher Corporation (DHR) (Diversified Conglomerate: Environmental, dental, diagnostics, life sciences, industrial technologies, test & measurement)
- Dentsply Sirona Inc. (XRAY) (Dental products, consumable healthcare products)
- Edwards Lifesciences Corporation (EW) (Heart valves and hemodynamic monitoring)
- Hologic, Inc. (HOLX) (Diagnostic products, medical imaging systems and surgical products; primary business units focus on breast health, diagnostics, GYN surgical and skeletal health)
- Illumina, Inc. (ILMN) (Genetic analysis tools, consumables and integrated systems)
- Intuitive Surgical, Inc. (ISRG) (Robotic-assisted minimally invasive surgery technologies)
- Medtronic, Inc. (MDT) (Cardiac, diabetes, general surgical products, nervous system, spinal and musculoskeletal, surgical technologies, vascular)
- PerkinElmer, Inc. (PKI) (Medical devices and equipment: Electronic laboratory notebook and software, neonatal and newborn screening, cancer treatment, environmental)
- ResMed Inc. (RMD) (Sleep and respiratory medicine equipment)
- Stryker Corporation (SYK) (Medical and surgical tools and equipment; reconstructive: hips, knees, foot, ankle, trauma, sports medicine; neurotechnology; spine)
- Varian Medical Systems, Inc. (VAR) (Medical devices and equipment: Oncology treatment systems and software, X-ray products)
- Zimmer Biomet, Inc. (ZBH) (Dental implants; orthopaedic reconstructive products; spine products; sports medicine and trauma products; surgical products)
Medical Software
- Cerner Corporation (CERN) (Software: Healthcare information technology: cloud-based platform; clinical, financial and management information systems)
Pharmaceuticals
- Abbott Laboratories (ABT)
- Allergan plc (AGN) (Generics, biosimilars, dermatology and aesthetics, central nervous system, eye care, women’s health and urology, GI and cystic fibrosis, cardiovascular and infectious disease)
- Eli Lilly and Company (LLY) (Animal health, cardiovascular, critical care, diabetes, men’s health, musculoskeletal, neuroscience, oncology)
- Johnson & Johnson (JNJ)
- Merck & Company, Inc. (MRK) (Pharmaceuticals: cardiovascular, diabetes, general medicine, immunology, infectious diseases, oncology, respiratory, women’s health; Vaccines, Animal Health Products)
- Mylan Inc. (MYL) (Generic, branded generic and specialty pharmaceuticals)
- Perrigo Company (PRGO) (Ireland: generic over-the-counter, prescription pharmaceuticals, nutritional products, active pharmaceutical ingredients)
- Pfizer, Inc. (PFE)
Pharmacy Benefit Management
- Express Scripts Holding Company (ESRX) (Pharmacy benefit management company: formulary management programs, retail drug card programs, home delivery services)
Scientific and Technical Instruments
- Mettler-Toledo International, Inc. (MTD) (Precision instruments used in laboratories and industrial and food retailing markets)
- Thermo Fisher Scientific Inc. (TMO) (Analytical instruments, lab equipment and specialty diagnostics)
- Waters Corporation (WAT) (Analytical technologies including liquid chromatography, mass spectrometry and thermal analysis)
Risks & Considerations
Regulatory and Pricing Pressure
U.S. healthcare companies are subject to legislative changes regarding drug pricing and insurance reimbursement rates, which can impact long-term margins.
Patent Cliffs and R&D Failure
Pharmaceutical and biotech firms face sudden revenue drops when key patents expire or when expensive late-stage clinical trials fail to meet endpoints.
M&A Integration Risk
The healthcare sector frequently sees large-scale acquisitions. Failed integrations or overpayment for specialized pipelines can lead to significant asset write-downs.
Liability and Litigation
Medical device and pharma companies are often targets of massive product liability lawsuits, which can lead to billions in settlements and brand damage.
These risk factors are for educational purposes only and are not exhaustive. Individual investment decisions should be based on thorough due diligence.
Frequently Asked Questions
The S&P 500 healthcare group typically includes large drugmakers, managed care companies, medical device makers, diagnostics firms, and healthcare services companies. Exact membership can change due to spin-offs or acquisitions.
In 2026, Eli Lilly (LLY) and UnitedHealth Group (UNH) are the largest healthcare constituents by market value, often trading places based on clinical pipeline success and enrollment trends.
Dividend leaders usually come from mature pharmaceutical firms like AbbVie (ABBV), Johnson & Johnson (JNJ), and Pfizer (PFE), which often feature yields above 3%.
Yes, many are considered defensive because healthcare demand is less cyclical than other sectors. However, they are still exposed to regulatory risks and "patent cliff" events.
As of 2026, healthcare typically accounts for approximately 12-14% of the total S&P 500 index weight, making it one of the most influential sectors for the benchmark.
Managed care often leads on revenue stability, while biotech and pharmaceutical subsectors can lead during periods of significant drug approvals or medical innovation cycles.
Investors can buy individual stocks like Eli Lilly or UNH, or use sector-specific ETFs like the Health Care Select Sector SPDR Fund (XLV) for broad diversified exposure.
The Health Care Select Sector SPDR Fund (XLV) is the primary benchmark ETF for this index segment. Other options include the Vanguard Health Care ETF (VHT).
Last updated April 2026 · Data sourced from U.S. exchange filings