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Who owns F5 (FFIV) stock

818 funds reported F5 (FFIV) shares in their latest 13F filings, worth $23.7B in all. The largest holder is BlackRock ($2.6B). Last quarter 427 funds added to their stakes and 283 cut them. Members of Congress and other officials disclosed 1 trade (1 buys, 0 sales).

Largest holders of FFIV (13F)Largest holders of FFIV (13F)BlackRock$2.6BVanguard Group$1.9BVanguard Capital Management LLC$1.5BState Street$1.3BVanguard Portfolio Management LLC$1.2BJericho Capital Asset Management …$881MHotchkis & Wiley Capital Manageme…$858MGeode Capital Management, LLC$741MFirst Trust Advisors LP$641MInvesco$576M

Largest holders (13F)

FundSharesValueChangeQuarter
BlackRock6,278,577$2.6Bincrease2026-06-30
Vanguard Group7,357,293$1.9Bincrease2025-12-31
Vanguard Capital Management LLC3,687,295$1.5Bincrease2026-06-30
State Street3,098,509$1.3Bincrease2026-06-30
Vanguard Portfolio Management LLC2,808,030$1.2Bdecrease2026-06-30
Jericho Capital Asset Management L.P.2,118,749$881Mdecrease2026-06-30
Hotchkis & Wiley Capital Management LLC2,061,574$858Mdecrease2026-06-30
Geode Capital Management, LLC1,779,100$741Mincrease2026-06-30
First Trust Advisors LP1,540,207$641Mincrease2026-06-30
Invesco1,385,078$576Mdecrease2026-06-30
AQR Capital Management LLC925,632$385Mincrease2026-06-30
Lyrical Asset Management LP921,848$383Mdecrease2026-06-30
Jane Street Group, LLC885,451$368Mincrease2026-06-30
Morgan Stanley835,480$348Mdecrease2026-06-30
Victory Capital Management801,485$333Mdecrease2026-06-30

Trades by Congress and other officials

DateWhoTradeAmount
2026-03-27Alan Armstrongpurchase$1K–$15K

F5's latest quarter

F5, Q3 FY26: revenue $865M (+11% year over year), operating margin 24.7%, net earnings $208M, operating cash flow $316M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most FFIV stock?

By the latest 13F filings: BlackRock ($2.6B); Vanguard Group ($1.9B); Vanguard Capital Management LLC ($1.5B); State Street ($1.3B); Vanguard Portfolio Management LLC ($1.2B).

Has Congress traded FFIV stock?

Officials disclosed 1 trade on file: 1 buys and 0 sales. The latest: Alan Armstrong, purchase on 2026-03-27.

What is the short interest in FFIV?

1,073,301 shares were sold short at the 2026-10-15 settlement, -14.87% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.