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 ($55.7m this quarter). Holder counts are more reliable. Shares outstanding: 56.6m as of 2026-08-03, 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 ≈ $413.63. Options: 17 managers hold calls ($180.8m notional), 13 hold puts ($176.2m).
Trends to Q2 2026
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 |
| Q1 2026 | 726 |
| Q2 2026 | 830 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 284 | 251 |
| Q4 2024 | 292 | 266 |
| Q1 2025 | 352 | 291 |
| Q2 2025 | 379 | 289 |
| Q3 2025 | 387 | 296 |
| Q4 2025 | 241 | 481 |
| Q1 2026 | 370 | 302 |
| Q2 2026 | 473 | 303 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $87.7m | $61.5m | 0.70 |
| Q4 2025 | $123.8m | $73.6m | 0.59 |
| Q1 2026 | $80.1m | $64.3m | 0.80 |
| Q2 2026 | $180.8m | $176.2m | 0.97 |
Biggest buyers
| JANE STREET GROUP, LLC | Added | +868.4k |
| Pictet Asset Management Holding SA | Added | +374.6k |
| Amundi | Added | +272.3k |
| MILLENNIUM MANAGEMENT LLC | Added | +261.5k |
| Robeco Institutional Asset Management B.V. | Added | +259.4k |
| AQR CAPITAL MANAGEMENT LLC | Added | +243.3k |
| ACADIAN ASSET MANAGEMENT LLC | Added | +185.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Added | +144.5k |
| JPMORGAN CHASE & CO | Added | +126.7k |
| CITIGROUP INC | Added | +124.1k |
Biggest sellers
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | Reduced | -2.5m |
| Jericho Capital Asset Management L.P. | Reduced | -524.3k |
| AMERICAN CENTURY COMPANIES INC | Reduced | -521.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -310.8k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | Sold out | -298.5k |
| Alyeska Investment Group, L.P. | Reduced | -287.2k |
| Freestone Grove Partners LP | Sold out | -283.5k |
| UBS Group AG | Reduced | -266.3k |
| Point72 Asset Management, L.P. | Reduced | -240.1k |
| VICTORY CAPITAL MANAGEMENT INC | Reduced | -220.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $46.9m112.8k shares |
| JANE STREET GROUP, LLC | Added | $46.3m111.3k shares |
| PEAK6 LLC | New | $25.4m61.0k shares |
| CITADEL ADVISORS LLC | Added | $21.8m52.5k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $15.0m36.1k shares |
| IMC-Chicago, LLC | Added | $11.9m28.5k shares |
| HRT FINANCIAL LP | Added | $3.5m8.3k shares |
| Walleye Trading LLC | Reduced | $2.2m5.3k shares |
| Squarepoint Ops LLC | Reduced | $2.2m5.3k shares |
| Walleye Capital LLC | Added | $1.9m4.6k shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $44.4m106.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $39.2m94.3k shares |
| Oribel Capital Management, LP | New | $24.5m59.0k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $24.0m57.6k shares |
| IMC-Chicago, LLC | Added | $16.4m39.5k shares |
| JANE STREET GROUP, LLC | Added | $15.2m36.5k shares |
| SIMPLEX TRADING, LLC | Added | $3.8m9.2k shares |
| Walleye Trading LLC | Added | $3.2m7.6k shares |
| BOOTHBAY FUND MANAGEMENT, LLC | New | $2.5m6.1k shares |
| Squarepoint Ops LLC | Reduced | $1.3m3.2k 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 since 1 Apr 2026
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 |
|---|---|---|---|---|---|
| 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 |
| Q1 2026 | 0 | — | 10 | $6.8m | $5.5m |
| Q2 2026 | 0 | — | 8 | $7.8m | $7.4m |
| Q3 2026 | 0 | — | 9 | $6.8m | $5.3m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-14 | MONTOYA MICHAEL F Chief Technology Ops Officer | Sold plan | $1.8m4.4k shares |
| 2026-09-14 | Maddison John Anthony Chief Product Mkting Officer | Sold plan | $82.9k204 shares |
| 2026-08-05 | Locoh-Donou Francois President, CEO & Director, director | Sold plan | $1.6m3.8k shares |
| 2026-08-05 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $500.9k1.2k shares |
| 2026-08-03 | Maddison John Anthony Chief Product Mkting Officer | Sold plan | $405.9k1.0k shares |
| 2026-08-03 | WHALEN CHAD MICHAEL EVP, Worldwide Sales | Sold plan | $284.6k703 shares |
| 2026-08-03 | Werner Edward Cooper Chief Financial Officer | Sold plan | $243.1k599 shares |
| 2026-08-03 | OKEKE ANGELIQUE M EVP, General Counsel | Sold plan | $208.3k515 shares |
| 2026-08-03 | ANAND KUNAL Chief Technology Officer | Sold plan | $158.6k392 shares |
| 2026-07-30 | MEHTA NIKHIL RAMESH Director | Sold | $1.6m4.0k shares |
| 2026-06-10 | Buse Elizabeth Director | Sold | $399.4k1.0k shares |
| 2026-06-02 | Werner Edward Cooper Chief Financial Officer | Sold plan | $1.0m2.5k shares |
| 2026-05-08 | WHALEN CHAD MICHAEL EVP, Worldwide Sales | Sold plan | $2.2m6.2k shares |
| 2026-05-08 | Werner Edward Cooper Chief Financial Officer | Sold plan | $525.0k1.5k shares |
| 2026-05-05 | Locoh-Donou Francois President, CEO & Director, director | Sold plan | $1.3m3.8k shares |
| 2026-05-05 | FOUNTAIN THOMAS DEAN EVP Global Services & Strategy | Sold plan | $439.0k1.3k shares |
| 2026-05-04 | ANAND KUNAL Chief Technology Officer | Sold plan | $1.0m3.1k shares |
| 2026-05-04 | Maddison John Anthony Chief Product Mkting Officer | Sold plan | $322.3k1.0k shares |
| 2026-05-04 | OKEKE ANGELIQUE M EVP, General Counsel | Sold plan | $271.4k842 shares |
| 2026-05-04 | WHALEN CHAD MICHAEL EVP, Worldwide Sales | Sold plan | $232.5k704 shares |
| 2026-05-04 | Werner Edward Cooper Chief Financial Officer | Sold plan | $193.1k599 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, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.04% of their portfolio | 6.3m $2.6bn | Added +44.1k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 3.7m $1.5bn | Added +17.2k |
| STATE STREET CORP 0.04% of their portfolio | 3.1m $1.3bn | Added +119.5k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.05% of their portfolio | 2.8m $1.2bn | Reduced -167.6k |
| Jericho Capital Asset Management L.P. 7.28% of their portfolio | 2.1m $881.3m | Reduced -524.3k |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 2.50% of their portfolio | 2.1m $857.5m | Reduced -2.5m |
| GEODE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 1.8m $740.8m | Added +36.6k |
| FIRST TRUST ADVISORS LP 0.38% of their portfolio | 1.5m $640.7m | Added +63.2k |
| Invesco Ltd. 0.05% of their portfolio | 1.4m $576.1m | Reduced -59.7k |
| AQR CAPITAL MANAGEMENT LLC 0.13% of their portfolio | 925.6k $385.0m | Added +243.3k |
| LYRICAL ASSET MANAGEMENT LP 4.86% of their portfolio | 921.8k $383.5m | Reduced -25.5k |
| JANE STREET GROUP, LLC 0.23% of their portfolio | 885.5k $368.3m | Added +868.4k |
| MORGAN STANLEY 0.02% of their portfolio | 835.5k $347.5m | Reduced -20.4k |
| NORGES BANK 0.03% of their portfolio | 834.5k $347.1m | Not comparable |
| VICTORY CAPITAL MANAGEMENT INC 0.19% of their portfolio | 801.5k $333.4m | Reduced -220.1k |
| NORTHERN TRUST CORP 0.04% of their portfolio | 739.0k $307.4m | Added +3.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.05% of their portfolio | 726.8k $302.3m | Added +144.5k |
| ALLIANCEBERNSTEIN L.P. 0.07% of their portfolio | 723.7k $209.4m | Reduced -104.6k |
| JPMORGAN CHASE & CO 0.02% of their portfolio | 698.4k $286.7m | Added +126.7k |
| AMERIPRISE FINANCIAL INC 0.06% of their portfolio | 695.4k $289.3m | Reduced -86.1k |
| DIMENSIONAL FUND ADVISORS LP 0.05% of their portfolio | 637.4k $265.1m | Added +34.3k |
| Robeco Institutional Asset Management B.V. 0.30% of their portfolio | 591.1k $245.9m | Added +259.4k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.73% of their portfolio | 586.3k $243.9m | Reduced -63.7k |
| Amundi 0.06% of their portfolio | 555.8k $231.2m | Added +272.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 514.1k $213.8m | Added +5.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.04% of their portfolio | 506.9k $210.8m | Reduced -310.8k |
| HSBC HOLDINGS PLC 0.10% of their portfolio | 499.8k $208.3m | Reduced -79.9k |
| Legal & General Group Plc 0.04% of their portfolio | 493.9k $205.5m | Added +3.4k |
| VOYA INVESTMENT MANAGEMENT LLC 0.15% of their portfolio | 422.7k $175.8m | Reduced -649 |
| DEUTSCHE BANK AG\ 0.05% of their portfolio | 414.2k $172.3m | Added +8.7k |
| Pictet Asset Management Holding SA 0.16% of their portfolio | 400.2k $166.4m | Added +374.6k |
| MILLENNIUM MANAGEMENT LLC 0.10% of their portfolio | 370.7k $154.2m | Added +261.5k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 370.2k $154.0m | Reduced -15.7k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 363.7k $151.3m | Added +109.2k |
| ACADIAN ASSET MANAGEMENT LLC 0.17% of their portfolio | 342.4k $142.4m | Added +185.9k |
| Quantinno Capital Management LP 0.16% of their portfolio | 316.7k $131.7m | Added +73.8k |
| VANGUARD FIDUCIARY TRUST CO 0.03% of their portfolio | 316.7k $131.7m | Reduced -1.4k |
| CITIGROUP INC 0.06% of their portfolio | 312.9k $130.1m | Added +124.1k |
| UBS Group AG 0.02% of their portfolio | 306.8k $127.6m | Reduced -266.3k |
| Penserra Capital Management LLC 0.97% of their portfolio | 302.3k $125.7m | Reduced -22.6k |
| FMR LLC 0.01% of their portfolio | 292.7k $121.7m | Added +113.0k |
| Nuveen, LLC 0.03% of their portfolio | 268.2k $111.6m | Added +109.0k |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 263.4k $109.6m | Reduced -521.4k |
| Pacer Advisors, Inc. 0.28% of their portfolio | 257.9k $107.3m | Added +8.4k |
| Point72 Asset Management, L.P. 0.15% of their portfolio | 242.1k $100.7m | Reduced -240.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 230.5k $95.9m | Added +99.4k |
| SEI INVESTMENTS CO 0.08% of their portfolio | 229.8k $95.6m | Reduced -26.6k |
| BNP PARIBAS FINANCIAL MARKETS 0.05% of their portfolio | 226.5k $94.2m | Reduced -180.1k |
| Swedbank AB 0.08% of their portfolio | 209.3k $87.1m | Reduced -4.7k |
| PANAGORA ASSET MANAGEMENT INC 0.25% of their portfolio | 197.3k $82.1m | Added +31.8k |
| Allianz Asset Management GmbH 0.06% of their portfolio | 179.8k $58.8m | Reduced -2.6k |
| Boston Trust Walden Corp 0.56% of their portfolio | 177.4k $73.8m | Added +78 |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 169.1k $70.4m | Reduced -71.0k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.07% of their portfolio | 163.9k $68.2m | Added +62.1k |
| Russell Investments Group, Ltd. 0.06% of their portfolio | 162.3k $67.0m | Added +19.6k |
| Gotham Asset Management, LLC 0.16% of their portfolio | 160.7k $66.8m | Reduced -1.5k |
| Swiss National Bank 0.03% of their portfolio | 159.4k $66.3m | Reduced -11.1k |
| Jupiter Topco LLC 0.03% of their portfolio | 159.0k $66.2m | First filing |
| Nippon Life Global Investors Americas, Inc. 2.45% of their portfolio | 148.3k $61.7m | Added +116.7k |
| Junto Capital Management LP 1.12% of their portfolio | 145.2k $60.4m | Reduced -209.0k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.03% of their portfolio | 138.8k $57.7m | Added +5.6k |
| TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio | 137.6k $57.2m | Added +122.5k |
| Sumitomo Mitsui Trust Group, Inc. 0.03% of their portfolio | 134.7k $56.0m | Reduced -1.4k |
| Caisse de depot et placement du Quebec 0.08% of their portfolio | 133.4k $55.5m | Reduced -102.4k |
| Assenagon Asset Management S.A. 0.04% of their portfolio | 132.0k $54.9m | Added +100.2k |
| California Public Employees Retirement System 0.03% of their portfolio | 123.2k $51.2m | Reduced -25.1k |
| Vanguard Global Advisers, LLC 0.02% of their portfolio | 121.7k $50.6m | Reduced -2.3k |
| RHUMBLINE ADVISERS 0.04% of their portfolio | 120.1k $50.0m | Reduced -21.6k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.03% of their portfolio | 114.0k $47.4m | Added +13.7k |
| BANK OF MONTREAL /CAN/ 0.02% of their portfolio | 112.1k $46.6m | Reduced -61.9k |
| BARCLAYS PLC 0.01% of their portfolio | 112.1k $46.6m | Reduced -17.6k |
| PFA Pension, Forsikringsaktieselskab 0.11% of their portfolio | 108.0k $44.9m | Reduced -13.5k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 105.7k $44.0m | Reduced -201.3k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 97.7k $40.6m | Added +44.0k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 92.4k $38.4m | Added +92.2k |
| Railway Pension Investments Ltd 0.48% of their portfolio | 91.0k $37.9m | Added +64.7k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.03% of their portfolio | 88.7k $36.9m | Reduced -8.2k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.05% of their portfolio | 86.8k $34.4m | Reduced -3.0k |
| FJARDE AP-FONDEN /FOURTH SWEDISH NATIONAL PENSION FUND 0.17% of their portfolio | 86.6k $36.0m | Reduced -760 |
| KLP KAPITALFORVALTNING AS 0.11% of their portfolio | 84.7k $35.2m | Reduced -15.4k |
| APG Asset Management N.V. 0.07% of their portfolio | 80.9k $29.5m | Added +2.5k |
| Treasurer of the State of North Carolina 0.08% of their portfolio | 79.3k $33.0m | Reduced -28.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 78.6k $32.7m | Reduced -615 |
| Fisher Asset Management, LLC 0.01% of their portfolio | 78.4k $32.6m | Reduced -1.3k |
| CANADA LIFE ASSURANCE Co 0.05% of their portfolio | 78.1k $32.4m | Reduced -8.7k |
| LMR Partners LLP 0.23% of their portfolio | 76.1k $31.7m | Added +28.6k |
| Addenda Capital Inc. 0.82% of their portfolio | 72.4k $30.1m | Reduced -595 |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 70.4k $29.3m | Added +3.3k |
| GLENMEDE TRUST CO NA 0.12% of their portfolio | 68.0k $28.3m | Reduced -1.6k |
| DANSKE BANK A/S 0.06% of their portfolio | 67.2k $27.9m | Added +2.1k |
| DekaBank Deutsche Girozentrale 0.03% of their portfolio | 65.8k $19.0m | Unchanged |
| Man Group plc 0.05% of their portfolio | 63.3k $26.3m | Reduced -65.1k |
| Illinois Municipal Retirement Fund 0.30% of their portfolio | 63.0k $26.2m | Added +29.5k |
| Mitsubishi UFJ Trust & Banking Corp 0.06% of their portfolio | 62.1k $25.8m | Added +2.8k |
| Squarepoint Ops LLC 0.05% of their portfolio | 62.0k $25.8m | Reduced -85.9k |
| LAZARD ASSET MANAGEMENT LLC 0.04% of their portfolio | 61.8k $25.7m | Added +56.0k |
| STOREBRAND ASSET MANAGEMENT AS 0.06% of their portfolio | 61.4k $25.5m | Reduced -31.2k |
| Oribel Capital Management, LP 2.04% of their portfolio | 59.0k $24.5m | New |
| Wolf Hill Capital Management, LP 2.21% of their portfolio | 55.0k $22.9m | New |
| AVIVA PLC 0.03% of their portfolio | 55.0k $22.9m | Reduced -2.6k |