Illumina (XSWX:ILMN) GF Value Rank: 5 (As of Jun. 26, 2026) — 29% Below Median


XSWX:ILMN Illumina Inc XSWX:ILMN
76 GF Score
Price CHF143.95
GF Value CHF105.51
! 7 Warning Signs
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What is Illumina GF Value Rank?

Illumina XSWX:ILMN -0.79% 76 GF Value Rank is 5 as of Jun. 26, 2026, which is 29% below its 10-year median of 7.00. GuruFocus rates XSWX:ILMN with a GF Score™ of 76/100 and a GF Value™ of CHF105.51. The stock has 7 warning signs investors should review.

Illumina has the GF Value Rank of 5.

GF Value Rank evaluates the exclusive GuruFocus valuation and performance of a stock, rated on a scale from 1 to 10. It is determined by the price-to-GF-Value (P/GF Value) ratio, a proprietary metric calculated based on historical multiples along with an adjustment factor based on a company's past returns and growth and future estimates of the business' performance.

GuruFocus found that for valuation, we cannot simply give stocks a better GF Value rank simply because they have a lower P/GF Value ratio. Backtesting shows that over the long term, the two worst-performing groups are the most expensive group (with the highest P/GF Value ratio) and the least expensive group (with the lowest P/GF Value ratio).

We can understand why the most expensive group underperforms. We were initially puzzled by the underperformance of the least expensive group, but we realized there is a reason why some stocks are super cheap. If they look too undervalued, it is often because the businesses behind them are poor quality. The market realized this and gave them low valuations. In a way, the market is efficient.

After multiple backtesting analyses, we granted the stocks in third-cheapest percentile the highest GF Value rank, as they have performed the best over a full market cycle. Stock performance is actually not as sensitive to valuation as it is to growth and profitability. On average, the companies in the 20%-50% valuation groups have similar performances. Therefore, we should avoid the most expensive and the least expensive stocks. We can be more tolerant of valuation.

A higher score indicates a stock with a relatively low valuation and substantial potential for outperformance. Conversely, a lower score often reflects stocks that are either highly overvalued or deeply undervalued, both of which tend to underperform.

Please click GF Score to see more details on the GF Score's 5 Key Aspects of Analysis.

XSWX:ILMN vs MTD, DGX, LH: GF Value Rank Comparison

For the Diagnostics & Research subindustry, Illumina's GF Value Rank, along with its competitors' market caps and GF Value Rank 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 GF Value Rank vs Medical Diagnostics & Research Industry

For the Medical Diagnostics & Research industry and Healthcare sector, Illumina's GF Value Rank distribution charts can be found below:

* The bar in red indicates where Illumina's GF Value Rank falls into.


XSWX:ILMN
76GF Score
Illumina Inc XSWX:ILMN
GF Value Rank is just one metric. See GF Score™, valuation, warning signs, and more.
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Frequently Asked Questions Learn more about GF Value Rank →
What does a GF Value Rank of 5 mean?
Illumina (XSWX:ILMN) has a GF Value Rank of 5 as of Jun. 26, 2026. GF Value Rank is given based on historical multiples along with past returns, growth and future estimates of the business' performance. View historical data on Illumina and its competitors. This is 29% below median its historical median of 7.00. Over the past decade, Illumina's GF Value Rank has ranged from 5.00 to 9.00.
Is Illumina's GF Value Rank too high?
Illumina's current GF Value Rank of 5 is 29% below median its 10-year median of 7.00. Over the past 10 years, this metric has ranged from a low of 5.00 to a high of 9.00. Overall, Illumina has a GF Score™ of 76/100, reflecting its overall financial health beyond just this single metric.
How does Illumina's GF Value Rank compare to MTD and DGX?
Illumina's GF Value Rank of 5 can be compared against companies in the Medical Diagnostics & Research industry. Historically, Illumina's own GF Value Rank has ranged from 5.00 to 9.00 over the past decade. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good GF Value Rank for a Medical Diagnostics & Research company?
A good GF Value Rank depends on the Medical Diagnostics & Research industry context. However, GF Value Rank 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 GF Value Rank mean?
A high GF Value Rank can signal that a stock is expensive relative to its fundamentals. GF Value Rank is given based on historical multiples along with past returns, growth and future estimates of the business' performance. View historical data on Illumina and its competitors. Illumina's current GF Value Rank is 5, which is 29% below median its own 10-year median of 7.00. 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 GF Value Rank of 5. The stock's GF Value™ is CHF105.51, compared to a current price of CHF143.95 — trading 36.4% above its estimated fair value. The current GF Value Rank is 5, which is 29% below median its 10-year median of 7.00. 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 GF Value Rank calculated?
GF Value Rank is calculated from a company's financial statements. For Illumina (XSWX:ILMN), the current GF Value Rank is 5 as of Jun. 26, 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 36.4% above its estimated GF Value™ of CHF105.51.

Key valuation signals for XSWX:ILMN:

  • GF Value Rank: 5 (29% below median its 10-year median of 7.00)
  • GF Value™: CHF105.51 vs. price of CHF143.95 (36.4% above fair value)
  • GF Score™: 76/100 with 7 warning signs

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 Business Description

Address 5200 Illumina Way, San Diego, CA, USA, 92122
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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GF Value Rank is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

CHF143.95
Price
CHF105.51
GF Value