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Companies / Health Care / Illumina, Inc.
ILMN

Illumina, Inc.

Health CareMedical Instruments
Ticker ILMNSAN DIEGO, CAFiscal year ends JanuaryBook value per share $18.43Diluted shares 154.0M

Illumina, Inc. (Nasdaq: ILMN) develops sequencing- and array-based solutions for genetic and genomic analysis, serving research and clinical customers including universities, government laboratories, hospitals, pharmaceutical and biotechnology companies, molecular diagnostic laboratories, and consumer genomics… From the company’s description.

In fiscal 2025, Illumina, Inc. reported revenue of $4.34B, down 0.7% from fiscal 2024, and net income of $850.00M. Its operating margin was 18.6%, and operations generated $1.08B in cash. Over the twelve months to Jun 28, 2026, revenue was $4.49B.

Fiscal year 2025 · ends 01-03Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-28
Sales & profitability
$4.34BFY2025
−0.7% year over year
Last 12 mo $4.49B
18.58%FY2025
+37.6 percentage points
Last 12 mo 19.65%
$850.00MFY2025
+169.5% year over year
Last 12 mo $824.00M
31.22%FY2025
+6.1 percentage points
Last 12 mo 29.03%
Cash & financing
$1.08BFY2025
+28.9% year over year
Last 12 mo $1.09B
$931.00MFY2025
+31.3% year over year
Last 12 mo $931.00M
0.73FY2025
Was 0.84× a year earlier
Last 12 mo 0.70
156.0MFY2025
−1.9% year over year
Last 12 mo 154.0M

Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.

What Illumina, Inc. does

In the company’s own words

Illumina, Inc. (Nasdaq: ILMN) develops sequencing- and array-based solutions for genetic and genomic analysis, serving research and clinical customers including universities, government laboratories, hospitals, pharmaceutical and biotechnology companies, molecular diagnostic laboratories, and consumer genomics businesses. Its integrated portfolio includes sequencing and microarray instruments, consumables such as reagents and library-preparation kits, genomic data-analysis software, and customer services. Applications span basic research, drug development, oncology, genetic and reproductive health, consumer genomics, and agricultural research. Sequencing accounted for 92% of revenue in fiscal 2025, with arrays contributing 8%; consumables represented 74% of total revenue. Illumina has one reportable segment, Core Illumina. As of December 28, 2025, its global workforce included approximately 8,600 full-time employees, 50 part-time employees, and 1,430 contingent workers. In 2024, Illumina separated GRAIL into an independent public company. Its website is www.illumina.com.

Company details
Sector
Health Care
Industry (SIC)
Medical Instruments
Headquarters
SAN DIEGO, CA
Fiscal year end
January
CIK
1110803
SIC
3826

Financial performance, year by year

Fiscal 2012–2025 · USD
$-1.80B$-73.20M$1.65B$3.38B$5.10B201220132014201620172018201920212022202320242025Last 12 moLast 12 monthsLast 12 months

The full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.

Ownership

Who owns Illumina, Inc. — and what changed

Funds as of 2026Q2 · superinvestors as of 2026-06-30

619
funds hold it
0 of 35
superinvestors hold it
$10.96B
held by funds, at market
43.8%
of shares held by funds
4
bond issues held by funds

Largest fund holders · Illumina, Inc.’s weight in each

iShares Core S&P Mid-Cap ETF
IJH · iShares Trust
0.73%of fund net assets
VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.03%of fund net assets
0.21%of fund net assets
VANGUARD SMALL-CAP INDEX FUND
VB · VANGUARD INDEX FUNDS
0.31%of fund net assets
0.12%of fund net assets

Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.

Illumina, Inc.’s bonds, as funds hold them

Funds report holding 4 issues of Illumina, Inc.’s debt, $565.88M at market value — what funds hold, not the company’s total debt. Weighted-average coupon 4.76%, maturing 2026 to 2031.

Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.

Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.

Connected research

Put this business in context.

Compare this company with peers, find it in your funds and follow its financial history with your connected AI:

  • “How do Illumina, Inc. and its peers compare on margins and cash generation over ten years?”
  • “Where did five years of Illumina, Inc.'s earnings go — cash, debt, buybacks, reinvestment?”
  • “What changed in Illumina, Inc.'s last four quarterly filings that the numbers alone won't show?”
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