ILMN (Illumina) Shares Buyback Ratio %: 1.95 (As of Aug. 08, 2026)

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ILMN Illumina Inc ILMN
74 GF Score
Price $187.96
GF Value $132.06
Valuation Significantly Overvalued
! 7 Warning Signs
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What is Illumina Shares Buyback Ratio %?

Illumina ILMN -2.97% 74 Shares Buyback Ratio % is 1.95 as of Aug. 08, 2026. GuruFocus rates ILMN with a GF Score™ of 74/100 and a GF Value™ of $132.06 (Significantly Overvalued). The stock has 7 warning signs investors should review.

Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.

GuruFocus calculates shares buyback ratio using previous shares outstanding minus the current shares outstanding, and then divides by previous shares outstanding. Illumina's current shares buyback ratio was 1.95%.

Illumina Shares Buyback Ratio % Related Terms

Illumina Shares Buyback Ratio % Historical Data

* Premium members only.

The historical data trend for Illumina's Shares Buyback Ratio % 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.

Illumina Shares Buyback Ratio % Chart

Illumina Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shares Buyback Ratio %
Get a 7-Day Free Trial Premium Member Only Premium Member Only -7.53 -0.64 -0.63 0.00 3.77

Illumina Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shares Buyback Ratio % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 3.14 0.65 0.00 0.65 0.66
ILMN
74GF Score
Illumina Inc ILMN
Shares Buyback Ratio % is just one metric. See GF Score™, valuation, warning signs, and more.
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Illumina Shares Buyback Ratio % Calculation

Illumina's Shares Buyback Ratio for the fiscal year that ended in Dec. 2025 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Dec. 2024 ) - Shares Outstanding (EOP) (A: Dec. 2025 )) / Shares Outstanding (EOP) (A: Dec. 2024 )
=(159.000 - 153.000) / 159.000
=3.77%

Illumina's Shares Buyback Ratio for the quarter that ended in Jun. 2026 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Mar. 2026 ) - Shares Outstanding (EOP) (A: Jun. 2026 )) / Shares Outstanding (EOP) (A: Mar. 2026 )
=(152.000 - 151.000) / 152.000
=0.66%

* 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.

Frequently Asked Questions Learn more about Shares Buyback Ratio % →
What does a Shares Buyback Ratio % of 1.95 mean?
Illumina (ILMN) has a Shares Buyback Ratio % of 1.95 as of Aug. 08, 2026. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Illumina and its competitors.
Is Illumina's Shares Buyback Ratio % too high?
Illumina's current Shares Buyback Ratio % is 1.95. Overall, Illumina has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Illumina's Shares Buyback Ratio % compare to MTD and DGX?
Illumina's Shares Buyback Ratio % of 1.95 can be compared against companies in the Medical Diagnostics & Research industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Buyback Ratio % for a Medical Diagnostics & Research company?
A good Shares Buyback Ratio % depends on the Medical Diagnostics & Research industry context. However, Shares Buyback Ratio % 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 Shares Buyback Ratio % mean?
A high Shares Buyback Ratio % can signal that a stock is expensive relative to its fundamentals. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Illumina and its competitors. Illumina's current Shares Buyback Ratio % is 1.95. 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?
Based on GuruFocus' analysis, Illumina (ILMN) is currently considered Significantly Overvalued. The stock's GF Value™ is $132.06, compared to a current price of $187.96 — trading 42.3% above its estimated fair value. The current Shares Buyback Ratio % is 1.95. Illumina's overall GF Score™ is 74/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Buyback Ratio % calculated?
Shares Buyback Ratio % is calculated from a company's financial statements. For Illumina (ILMN), the current Shares Buyback Ratio % is 1.95 as of Aug. 08, 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 (ILMN) Overvalued in 2026?

Based on GuruFocus' analysis, Illumina stock appears to be overvalued. The current stock price of $187.96 is trading 42.3% above its estimated GF Value™ of $132.06. GuruFocus considers Illumina to be Significantly Overvalued.

Key valuation signals for ILMN:

  • Shares Buyback Ratio %: 1.95
  • GF Value™: $132.06 vs. price of $187.96 (42.3% above fair value)
  • GF Score™: 74/100 with 7 warning signs

No single metric tells the full story. See the 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.
74GF Score

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Shares Buyback Ratio % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$187.96
Price
$132.06
GF Value