F5 INC FFIV
COM · Common Stock · CUSIP 315616102 · ISIN US3156161024
Multi-cloud cybersecurity and application delivery company
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($33.9m this quarter). Holder counts are more reliable. Shares outstanding: 56.5m as of 2026-01-30, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $255.18. Options: 17 managers hold calls ($123.8m notional), 13 hold puts ($73.6m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 500 |
| Q4 2022 | 523 |
| Q1 2023 | 497 |
| Q2 2023 | 499 |
| Q3 2023 | 513 |
| Q4 2023 | 524 |
| Q1 2024 | 535 |
| Q2 2024 | 534 |
| Q3 2024 | 590 |
| Q4 2024 | 648 |
| Q1 2025 | 686 |
| Q2 2025 | 726 |
| Q3 2025 | 762 |
| Q4 2025 | 678 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 244 | 242 |
| Q2 2024 | 266 | 248 |
| Q3 2024 | 284 | 251 |
| Q4 2024 | 292 | 266 |
| Q1 2025 | 352 | 291 |
| Q2 2025 | 379 | 289 |
| Q3 2025 | 387 | 296 |
| Q4 2025 | 241 | 481 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $125.0m | $42.6m | 0.34 |
| Q2 2025 | $129.9m | $35.5m | 0.27 |
| Q3 2025 | $87.7m | $61.5m | 0.70 |
| Q4 2025 | $123.8m | $73.6m | 0.59 |
Biggest buyers
| Jericho Capital Asset Management L.P. | New | +2.3m |
| FIRST TRUST ADVISORS LP | Added | +1.1m |
| HSBC HOLDINGS PLC | Added | +697.5k |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | Added | +637.9k |
| DEUTSCHE BANK AG\ | Added | +610.4k |
| UBS Group AG | Added | +599.4k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | New | +550.3k |
| NOMURA HOLDINGS INC | Added | +492.8k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +420.6k |
| Alyeska Investment Group, L.P. | New | +391.9k |
Biggest sellers
| Robeco Institutional Asset Management B.V. | Reduced | -563.9k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -522.7k |
| JPMORGAN CHASE & CO | Reduced | -510.8k |
| Qube Research & Technologies Ltd | Sold out | -312.7k |
| PANAGORA ASSET MANAGEMENT INC | Reduced | -301.5k |
| AMERIPRISE FINANCIAL INC | Reduced | -287.3k |
| JUPITER ASSET MANAGEMENT LTD | Sold out | -280.8k |
| COOKSON PEIRCE & CO INC | Sold out | -212.8k |
| AQR CAPITAL MANAGEMENT LLC | Reduced | -210.2k |
| Caisse de depot et placement du Quebec | Reduced | -209.5k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $41.8m163.9k shares |
| MAPLELANE CAPITAL, LLC | New | $28.3m110.0k shares |
| JANE STREET GROUP, LLC | Added | $21.0m82.2k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $7.6m29.8k shares |
| IMC-Chicago, LLC | New | $6.0m23.4k shares |
| CITADEL ADVISORS LLC | Reduced | $5.9m23.1k shares |
| Squarepoint Ops LLC | New | $2.6m10.2k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $2.3m9.1k shares |
| TWO SIGMA INVESTMENTS, LP | New | $1.8m7.0k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.6m6.3k shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $37.1m145.5k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $20.1m78.9k shares |
| JANE STREET GROUP, LLC | Reduced | $4.0m15.8k shares |
| MILLENNIUM MANAGEMENT LLC | New | $3.0m11.7k shares |
| IMC-Chicago, LLC | New | $2.8m10.8k shares |
| DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD. | New | $1.5m6.0k shares |
| TWO SIGMA INVESTMENTS, LP | New | $1.5m5.9k shares |
| PEAK6 LLC | New | $1.4m5.4k shares |
| SIMPLEX TRADING, LLC | Added | $944.5k3.7k shares |
| TUDOR INVESTMENT CORP ET AL | New | $561.6k2.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 7.5% |
Fell to 5% or below in the last year: HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (3.6%, 2026-08-12), VANGUARD PORTFOLIO MANAGEMENT LLC (5.0%, 2026-07-31; now reported by VANGUARD CAPITAL MANAGEMENT LLC), FIRST TRUST PORTFOLIOS LP (2.9%, 2026-04-30), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 4 | $1.8m | $431.5k |
| Q2 2024 | 0 | — | 5 | $2.1m | $1.2m |
| Q3 2024 | 0 | — | 6 | $3.1m | $2.9m |
| Q4 2024 | 0 | — | 6 | $4.3m | $4.1m |
| Q1 2025 | 0 | — | 6 | $5.7m | $4.9m |
| Q2 2025 | 0 | — | 6 | $3.2m | $1.8m |
| Q3 2025 | 0 | — | 4 | $4.2m | $4.2m |
| Q4 2025 | 0 | — | 5 | $8.0m | $7.4m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-12-29 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $289.1k1.1k shares |
| 2025-12-22 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $286.3k1.1k shares |
| 2025-12-15 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $293.9k1.1k shares |
| 2025-12-08 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $276.0k1.1k shares |
| 2025-12-03 | HIGGINSON ALAN Director | Sold | $310.4k1.3k shares |
| 2025-12-01 | Locoh-Donou Francois President, CEO & Director, director | Sold plan | $308.1k1.3k shares |
| 2025-12-01 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $263.1k1.1k shares |
| 2025-11-24 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $260.8k1.1k shares |
| 2025-11-18 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $252.5k1.1k shares |
| 2025-11-04 | SCHRAMM LYRA AMBER Chief People Officer | Sold | $262.3k1.1k shares |
| 2025-11-03 | WHALEN CHAD MICHAEL EVP, Worldwide Sales | Sold plan | $2.4m9.4k shares |
| 2025-11-03 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $2.1m8.3k shares |
| 2025-11-03 | Locoh-Donou Francois President, CEO & Director, director | Sold plan | $328.9k1.3k shares |
| 2025-10-01 | Locoh-Donou Francois President, CEO & Director, director | Sold plan | $416.8k1.3k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.03% of their portfolio | 7.4m $1.9bn | Added +114.5k |
| BlackRock, Inc. 0.03% of their portfolio | 6.3m $1.6bn | Reduced -119.3k |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 4.18% of their portfolio | 5.5m $1.4bn | Added +637.9k |
| STATE STREET CORP 0.03% of their portfolio | 3.1m $791.9m | Reduced -123.9k |
| FIRST TRUST ADVISORS LP 0.51% of their portfolio | 2.8m $702.9m | Added +1.1m |
| Jericho Capital Asset Management L.P. 6.60% of their portfolio | 2.3m $579.7m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio | 1.7m $437.2m | Reduced -56.7k |
| Invesco Ltd. 0.04% of their portfolio | 1.5m $392.5m | Added +106.6k |
| HSBC HOLDINGS PLC 0.08% of their portfolio | 1.2m $297.2m | Added +697.5k |
| UBS Group AG 0.05% of their portfolio | 1.0m $261.4m | Added +599.4k |
| LYRICAL ASSET MANAGEMENT LP 3.29% of their portfolio | 986.8k $251.9m | Reduced -53.4k |
| DEUTSCHE BANK AG\ 0.08% of their portfolio | 958.9k $244.8m | Added +610.4k |
| NORTHERN TRUST CORP 0.03% of their portfolio | 947.8k $241.9m | Reduced -69.9k |
| MORGAN STANLEY 0.01% of their portfolio | 841.1k $214.7m | Reduced -41.8k |
| WELLINGTON MANAGEMENT GROUP LLP 0.04% of their portfolio | 839.0k $214.2m | Added +420.6k |
| NORGES BANK 0.02% of their portfolio | 805.9k $205.7m | Not comparable |
| AMERICAN CENTURY COMPANIES INC 0.09% of their portfolio | 684.2k $174.6m | Added +259.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio | 636.3k $162.4m | Reduced -81.1k |
| AQR CAPITAL MANAGEMENT LLC 0.08% of their portfolio | 629.4k $160.7m | Reduced -210.2k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 598.8k $152.9m | Reduced -62.3k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.39% of their portfolio | 550.3k $140.5m | New |
| Amundi 0.04% of their portfolio | 507.8k $129.6m | Added +176.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 503.2k $128.5m | Added +4.3k |
| NOMURA HOLDINGS INC 0.36% of their portfolio | 497.5k $127.0m | Added +492.8k |
| ACADIAN ASSET MANAGEMENT LLC 0.20% of their portfolio | 484.6k $123.7m | Reduced -522.7k |
| Legal & General Group Plc 0.03% of their portfolio | 481.1k $122.8m | Reduced -20.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.07% of their portfolio | 472.9k $120.7m | Added +125.8k |
| VOYA INVESTMENT MANAGEMENT LLC 0.11% of their portfolio | 444.6k $113.5m | Reduced -43.8k |
| CITADEL ADVISORS LLC 0.08% of their portfolio | 436.6k $111.4m | Added +384.5k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 413.8k $105.6m | Reduced -9.7k |
| Penserra Capital Management LLC 1.20% of their portfolio | 397.1k $101.4m | Added +86.4k |
| Alyeska Investment Group, L.P. 0.28% of their portfolio | 391.9k $100.0m | New |
| Allianz Asset Management GmbH 0.11% of their portfolio | 364.4k $93.0m | Added +199.7k |
| Point72 Asset Management, L.P. 0.14% of their portfolio | 359.3k $91.7m | New |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 324.2k $82.8m | Reduced -14.6k |
| BANK OF MONTREAL /CAN/ 0.03% of their portfolio | 302.9k $77.3m | Added +30 |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.30% of their portfolio | 281.3k $71.8m | Added +265.1k |
| Robeco Institutional Asset Management B.V. 0.10% of their portfolio | 275.7k $70.4m | Reduced -563.9k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 275.4k $70.3m | Added +81.3k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.04% of their portfolio | 271.8k $69.4m | Reduced -11.6k |
| Junto Capital Management LP 1.52% of their portfolio | 266.1k $67.9m | New |
| Caisse de depot et placement du Quebec 0.11% of their portfolio | 253.2k $64.6m | Reduced -209.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 251.9k $64.3m | Reduced -510.8k |
| Swedbank AB 0.05% of their portfolio | 207.2k $52.9m | Added +3.7k |
| ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio | 206.6k $52.7m | Reduced -118.1k |
| SEI INVESTMENTS CO 0.05% of their portfolio | 196.2k $50.1m | Added +48.3k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 194.6k $49.7m | Reduced -287.3k |
| Boston Trust Walden Corp 0.35% of their portfolio | 182.1k $46.5m | Reduced -1.8k |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.06% of their portfolio | 168.3k $45.5m | Added +113.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 165.1k $42.2m | Added +42.5k |
| Nuveen, LLC 0.01% of their portfolio | 165.0k $42.1m | Reduced -31.7k |
| California Public Employees Retirement System 0.02% of their portfolio | 161.5k $41.2m | Reduced -38.1k |
| BANK OF NOVA SCOTIA 0.06% of their portfolio | 160.8k $41.0m | Added +149.7k |
| FMR LLC 0.00% of their portfolio | 160.1k $40.9m | Added +23.4k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 159.7k $40.8m | Added +35.1k |
| Swiss National Bank 0.02% of their portfolio | 157.4k $40.2m | Reduced -8.1k |
| BARCLAYS PLC 0.02% of their portfolio | 154.4k $39.4m | Reduced -156.0k |
| Russell Investments Group, Ltd. 0.04% of their portfolio | 154.3k $39.6m | Reduced -12.1k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.13% of their portfolio | 151.8k $39.0m | Reduced -20.5k |
| PANAGORA ASSET MANAGEMENT INC 0.14% of their portfolio | 150.5k $38.4m | Reduced -301.5k |
| Gotham Asset Management, LLC 0.14% of their portfolio | 148.6k $37.9m | Added +32.2k |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 144.8k $37.0m | Reduced -88 |
| Sumitomo Mitsui Trust Group, Inc. 0.02% of their portfolio | 144.2k $36.8m | Reduced -2.6k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 127.5k $32.6m | Reduced -25.1k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.02% of their portfolio | 124.0k $31.8m | Added +10.2k |
| STOREBRAND ASSET MANAGEMENT AS 0.08% of their portfolio | 123.2k $31.4m | Reduced -20.6k |
| PFA Pension, Forsikringsaktieselskab 0.09% of their portfolio | 121.5k $31.5m | First filing |
| KLP KAPITALFORVALTNING AS 0.12% of their portfolio | 119.9k $30.6m | Added +120 |
| FEDERATED HERMES, INC. 0.05% of their portfolio | 115.1k $29.4m | Reduced -93.9k |
| Quantinno Capital Management LP 0.05% of their portfolio | 106.9k $27.3m | Reduced -57.3k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.03% of their portfolio | 102.6k $26.2m | New |
| Treasurer of the State of North Carolina 0.08% of their portfolio | 99.2k $25.3m | Reduced -26.7k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 98.9k $25.2m | Reduced -3.5k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.04% of their portfolio | 94.0k $23.7m | Reduced -12.4k |
| Eurizon Capital SGR S.p.A. 0.07% of their portfolio | 91.1k $23.3m | First filing |
| Arbejdsmarkedets Tillaegspension 0.59% of their portfolio | 90.2k $23.0m | First filing |
| CANADA LIFE ASSURANCE Co 0.04% of their portfolio | 88.8k $22.7m | Reduced -36.8k |
| SG Capital Management LLC 2.37% of their portfolio | 85.0k $21.7m | New |
| Andra AP-fonden 0.27% of their portfolio | 84.6k $21.6m | Added +2.6k |
| APG Asset Management N.V. 0.05% of their portfolio | 84.4k $18.3m | Reduced -8.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 83.3k $21.3m | Added +1.1k |
| Lansforsakringar Fondforvaltning AB (publ) 0.10% of their portfolio | 80.1k $20.5m | Reduced -43.8k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 80.0k $20.4m | Added +15.2k |
| CITIGROUP INC 0.01% of their portfolio | 79.3k $20.2m | Added +13.5k |
| GLENMEDE TRUST CO NA 0.10% of their portfolio | 78.7k $20.1m | First filing |
| Addenda Capital Inc. 0.57% of their portfolio | 76.0k $19.4m | Reduced -1.1k |
| Talos Eurisko Asset Management LP 3.22% of their portfolio | 71.4k $18.2m | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 68.1k $17.4m | Reduced -21.5k |
| MAPLELANE CAPITAL, LLC 0.97% of their portfolio | 67.0k $17.1m | New |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 66.9k $17.3m | Reduced -162.6k |
| DekaBank Deutsche Girozentrale 0.02% of their portfolio | 65.8k $12.0m | Unchanged |
| Pacer Advisors, Inc. 0.04% of their portfolio | 64.6k $16.5m | Reduced -207.1k |
| Cinctive Capital Management LP 0.95% of their portfolio | 64.2k $16.4m | New |
| PINEBRIDGE INVESTMENTS LLC 0.11% of their portfolio | 60.4k $15.4m | First filing |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 60.3k $15.4m | Reduced -46.1k |
| Korea Investment CORP 0.03% of their portfolio | 60.1k $15.3m | Added +12.4k |
| AVIVA PLC 0.03% of their portfolio | 60.1k $15.3m | Added +5.0k |
| DANSKE BANK A/S 0.04% of their portfolio | 60.0k $15.3m | Reduced -33.7k |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 59.8k $15.3m | Reduced -103.7k |
| Mitsubishi UFJ Trust & Banking Corp 0.03% of their portfolio | 57.5k $14.7m | Reduced -135.9k |