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FFIV

F5, Inc.

Information TechnologyIndustrial MachineryS&P 500
Ticker FFIVSEATTLE, WAFiscal year ends SeptemberBook value per share $66.85Diluted shares 57.7M

F5, Inc. (Nasdaq: FFIV) provides application delivery and security products and services that help organizations operate and protect applications and APIs across on-premises, cloud, and edge environments. Its customers include large enterprises, public-sector institutions, governments, and service providers. The… From the company’s description.

In fiscal 2025, F5, Inc. reported revenue of $3.09B, up 9.7% from fiscal 2024, and net income of $692.38M. Its operating margin was 24.8%, and operations generated $949.67M in cash. Over the twelve months to Jun 30, 2026, revenue was $3.31B.

Fiscal year 2025 · ends 09-30Changes are against fiscal 2024The amber dot is the latest twelve months, to 2026-06-30
Sales & profitability
$3.09BFY2025
+9.7% year over year
Last 12 mo $3.31B
24.80%FY2025
+1.4 percentage points
Last 12 mo 24.54%
$692.38MFY2025
+22.2% year over year
Last 12 mo $726.51M
19.88%FY2025
+1.5 percentage points
Last 12 mo 18.84%
Cash & financing
$949.67MFY2025
+19.8% year over year
Last 12 mo $1.05B
$906.41MFY2025
+18.9% year over year
Last 12 mo $969.60M
—
58.7MFY2025
−1.1% year over year
Last 12 mo 57.7M

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 F5, Inc. does

In the company’s own words

F5, Inc. (Nasdaq: FFIV) provides application delivery and security products and services that help organizations operate and protect applications and APIs across on-premises, cloud, and edge environments. Its customers include large enterprises, public-sector institutions, governments, and service providers. The portfolio spans F5 BIG-IP, designed primarily for traditional applications; F5 NGINX, focused on modern, container-based applications and APIs; and F5 Distributed Cloud Services, a SaaS and managed-services portfolio for application security, networking, and management. Offerings include packaged software, SaaS, managed services, hardware systems, and maintenance, consulting, training, and technical support. F5 manages its business geographically across the Americas, Europe, the Middle East and Africa, and Asia Pacific. In fiscal 2025, it had 6,578 employees across 47 countries. Incorporated in 1996, F5 completed its acquisition of CalypsoAI in September 2025, with plans to integrate its technology into the F5 Application Delivery and Security Platform. Its website is www.f5.com.

Company details
Sector
Information Technology
Industry (SIC)
Industrial Machinery
Headquarters
SEATTLE, WA
Fiscal year end
September
CIK
1048695
SIC
3576

Financial performance, year by year

Fiscal 2013–2025 · USD
$-330.93M$661.87M$1.65B$2.65B$3.64B2013201420152016201720182019202020212022202320242025Last 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 F5, Inc. — and what changed

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

727
funds hold it
1 of 35
superinvestors hold it
$8.90B
held by funds, at market
40.8%
of shares held by funds

Superinvestors in F5, Inc. · what they did last quarter

Stanley DruckenmillerNEW
Duquesne Family Office
0.2%of 13F portfolio

Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.

Largest fund holders · F5, Inc.’s weight in each

VANGUARD TOTAL STOCK MARKET INDEX FUND
VTI · VANGUARD INDEX FUNDS
0.03%of fund net assets
VANGUARD WINDSOR II FUND
VWNFX · VANGUARD WINDSOR FUNDS
—of fund net assets
VANGUARD 500 INDEX FUND
VOO · VANGUARD INDEX FUNDS
0.04%of fund net assets
VANGUARD SMALL-CAP INDEX FUND
VB · VANGUARD INDEX FUNDS
0.29%of fund net assets
First Trust Nasdaq Cybersecurity ETF
CIBR · First Trust Exchange-Traded Fund II
3.41%of fund net assets

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

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”.

Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.

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 F5, Inc. and its peers compare on margins and cash generation over ten years?”
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