Market cap is the total market value to buy the whole company. It is equal to the share price times the number of Shares Outstanding (EOP). Illumina's share price for the quarter that ended in Mar. 2026 was CHF98.31. Illumina's Shares Outstanding (EOP) for the quarter that ended in Mar. 2026 was 152 Mil. Therefore, Illumina's market cap for the quarter that ended in Mar. 2026 was CHF14,943 Mil.
Illumina's quarterly market cap
stayed the same
from Sep. 2025 (CHF0 Mil) to Dec. 2025 (CHF0 Mil) but then
increased
from Dec. 2025 (CHF0 Mil) to Mar. 2026 (CHF14,943 Mil).
Enterprise Value is the theoretical takeover price. It is more comprehensive than market capitalization (market cap), which only includes common equity. Enterprise Value is calculated as the market cap plus debt and minority interest and preferred shares, minus total cash and cash equivalents. Illumina's Enterprise Value for Today is CHF22,784 Mil.
Illumina (XSWX:ILMN) Market Cap Explanation
Market cap is not the real price you pay for a company. If you buy the company and become its owner, you become the owner of the cash the company has, and you also assume the companys debt. The real price you pay is the Enterprise Value.
Warren Buffett uses the ratio of total market cap of all public traded companies over GDP to measure if the market is expensive. As of April 2012, the US total market cap is about $14.7 trillion, while the US GDP is about $15 trillion. The market was modestly overvalued.
Illumina Market Cap Related Terms
Illumina Market Cap Historical Data
* Premium members only.
The historical data trend for Illumina's Market Cap can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Diagnostics & Research subindustry, Illumina's Market Cap, along with its competitors' market caps and Market Cap data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Illumina Market Cap vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, Illumina's Market Cap distribution charts can be found below:
* The bar in red indicates where Illumina's Market Cap falls into.
Market cap is the short version of market capitalization. It is the total market value to buy the whole company. It is equal to the share price times the number of shares outstanding.
Illumina's Market Cap for the fiscal year that ended in Dec. 2025 is calculated as
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Illumina (XSWX:ILMN) has a Market Cap of CHF21,658 Mil as of Jun. 27, 2026. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Illumina and its competitors. According to the industry distribution chart, Illumina ranks #10 out of 219 companies in the Medical Diagnostics & Research industry, placing it in the top 4.6%.
Is Illumina's Market Cap too high?
Illumina's current Market Cap is CHF21,658 Mil. Based on the distribution chart, Illumina ranks #10 out of 219 companies in the Medical Diagnostics & Research industry, which is in the top quartile — a strong position relative to peers. Overall, Illumina has a GF Score™ of 76/100, reflecting its overall financial health beyond just this single metric.
How does Illumina's Market Cap compare to MTD and DGX?
According to the Medical Diagnostics & Research industry distribution chart, Illumina ranks #10 out of 219 companies for Market Cap. This places Illumina in the top 5% of its industry — outperforming the majority of peers. The industry median Market Cap is 55.76. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Market Cap for a Medical Diagnostics & Research company?
The median Market Cap among Medical Diagnostics & Research companies is 55.76, based on 219 companies in the industry. Companies in the top quartile (top 25%) have a Market Cap significantly above this median, while those in the bottom quartile fall well below. However, Market Cap should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Market Cap mean?
A high Market Cap can signal that a stock is expensive relative to its fundamentals. Market cap equals the total value of a company's shares: price times shares outstanding. View historical data on Illumina and its competitors. For the Medical Diagnostics & Research industry, the median Market Cap is 55.76 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Illumina's current Market Cap is CHF21,658 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Illumina stock overvalued right now?
Illumina (XSWX:ILMN) has a current Market Cap of CHF21,658 Mil. The stock's GF Value™ is CHF105.33, compared to a current price of CHF143.95 — trading 36.7% above its estimated fair value. The current Market Cap is CHF21,658 Mil. Illumina's overall GF Score™ is 76/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Market Cap calculated?
Market Cap is calculated from a company's financial statements. For Illumina (XSWX:ILMN), the current Market Cap is CHF21,658 Mil as of Jun. 27, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Illumina (XSWX:ILMN) Overvalued in 2026?
Based on GuruFocus' analysis, Illumina stock appears to be overvalued.
The current stock price of CHF143.95 is trading 36.7% above its estimated GF Value™ of CHF105.33.
Key valuation signals for XSWX:ILMN:
Market Cap: CHF21,658 Mil
GF Value™: CHF105.33 vs. price of CHF143.95 (36.7% above fair value)
No single metric tells the full story. See the XSWX:ILMN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Illumina provides tools and services to analyze genetic material with life science and clinical lab applications. The company generates over 90% of its revenue from sequencing instruments, consumables, and services. Illumina's high-throughput technology enables whole genome sequencing in humans and other large organisms. Its lower throughput tools enable applications that require smaller data outputs, such as viral and cancer tumor screening. Illumina also sells microarrays (9% of 2024 sales) that enable lower-cost, focused genetic screening with primarily consumer and agricultural applications.
76GF Score
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