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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) is a global leader in sequencing and array-based solutions for genetic and genomic analysis. The company's website is www.illumina.com. Illumina serves customers across research institutions, academic centers, government laboratories, hospitals, pharmaceutical companies, biotechnology… From the company’s description.

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) is a global leader in sequencing and array-based solutions for genetic and genomic analysis. The company's website is www.illumina.com. Illumina serves customers across research institutions, academic centers, government laboratories, hospitals, pharmaceutical companies, biotechnology firms, commercial molecular diagnostic laboratories, and consumer genomics companies worldwide.

The company operates as a single reportable segment, Core Illumina, following the June 2024 spin-off of GRAIL into an independent publicly traded company. In 2025, sequencing revenue comprised 92 percent of total revenue, while array revenue represented 8 percent. Within sequencing, consumables accounted for 74 percent of total consolidated revenue, instruments for 11 percent, and services and other for 15 percent.

Illumina's core technology platforms include its proprietary sequencing by synthesis chemistry, known as XLEAP-SBS, which enables massively parallel DNA sequencing with high accuracy and throughput. The company's sequencing platforms can generate between 500 megabases and 16.0 terabases of genomic data per run depending on the instrument. The BeadArray technology platform supports array-based applications including SNP genotyping, copy number variation analysis, and methylation analysis. Illumina's informatics suite, BaseSpace, integrates with sequencing instruments to manage samples, process raw data, and enable analysis. The company also offers DRAGEN Bio-IT Platform for secondary analysis and Illumina Connected Analytics for cloud-based multi-omic data management.

As of December 28, 2025, Illumina employed approximately 8,600 full-time employees, 50 part-time employees, and 1,430 contingent workers globally. The company maintains principal facilities in San Diego, California; Singapore; Cambridge, United Kingdom; and the San Francisco Bay Area, with additional operations in Madison, Wisconsin; Eindhoven, Netherlands; China; and India. International shipments represented 48 percent of total consolidated revenue in 2025. The company holds an extensive intellectual property portfolio comprising 1,380 issued U.S. patents and 7,653 issued patents outside the United States as of December 28, 2025.

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.

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