Fortinet FTNT
$118.84 −$3.67 (-3.00%)
Market closed · Nov 6, 9:50 pm ET · Last extended-hours $119.00 +0.13%
Open$126.46
Prev close$122.51
Day range$118.62 – $126.46
Volume8.03M
Market cap$87.31B
P/E (TTM)38.8
Dividend yield–
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership71.4%+0.23 pts vs. prior quarter
Institutions holding2,056+102 vs. prior quarter
Insider trades (recent)26 buys / 24 sellsNet buying
Short interest1.65% of floatDays to cover 3.6 · as of 15 Oct 2026
Short-sale volume share13.2%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$57.08M (13 inflow days, 7 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 34.0% of shares outstanding.
Largest holders
By investor type
Reported short interest has fallen from 1.96% to 1.65% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Boston Partners Global Investors, Inc. | Mutual Fund | 2026/Q3 | +801,943 | 0.3% |
| Jane Street Group, LLC | Private Company | 2026/Q3 | +3,940,525 | 0.6% |
| Acadian Asset Management LLC | Mutual Fund | 2026/Q3 | +2,999,200 | 0.6% |
| Millennium Management LLC | Hedge Fund | 2026/Q3 | +2,420,240 | 0.3% |
| D. E. Shaw & Co., L.P. | Hedge Fund | 2026/Q3 | +1,982,474 | 0.7% |
| Columbia Management Investment Advisers, LLC | Mutual Fund | 2026/Q3 | +1,423,088 | 0.5% |
| Citadel Advisors LLC | Hedge Fund | 2026/Q3 | +1,351,884 | 0.3% |
| Capital Research | Mutual Fund | 2026/Q3 | +1,136,256 | 0.4% |
| Two Sigma Investments, LP | Hedge Fund | 2026/Q3 | +1,047,009 | 0.3% |
| J.P. Morgan Asset Management, Inc. | Mutual Fund | 2026/Q3 | +969,936 | 0.5% |
| Amundi Asset Management | Mutual Fund | 2026/Q3 | +877,599 | 0.7% |
| Vanguard Capital Management, LLC | Mutual Fund | 2026/Q3 | +871,928 | 6.0% |
| AQR Capital Management | Hedge Fund | 2026/Q3 | +862,001 | 1.2% |
| Qube Research & Technologies Ltd | Mutual Fund | 2026/Q3 | +778,332 | 0.1% |
| Hudson River Trading LLC | Private Company | 2026/Q3 | +748,264 | 0.1% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 29 Sep 2026 | Kenneth A. Goldman | Independent Director | Derivative Exercise and Retained | +459 | – | 44,178 |
| 29 Sep 2026 | Janet Napolitano | Independent Director | Derivative Exercise and Retained | +459 | – | 4,733 |
| 29 Sep 2026 | Ming Hsieh | Independent Director | Derivative Exercise and Retained | +459 | – | 63,331 |
| 29 Sep 2026 | Judith Sim | Lead Independent Director | Derivative Exercise and Retained | +459 | – | 130,001 |
| 29 Sep 2026 | Jean Hu | Independent Director | Derivative Exercise and Retained | +459 | – | 39,508 |
| 29 Sep 2026 | James Stavridis | Independent Director | Derivative Exercise and Retained | +459 | – | 17,648 |
| 29 Sep 2026 | Derek Kan | Independent Director | Derivative Exercise and Retained | +459 | – | 459 |
| 23 Sep 2026 | Christiane Ohlgart | Chief Accounting Officer, CFO and Principal Financial & Accounting Officer | Automatic Disposition | -48 | $180.00 | 10,345 |
| 14 Sep 2026 | John Whittle | Chief Operating Officer | Derivative Exercise and Sale | -56,700 | $168.74 | 96,987 |
| 13 Sep 2026 | John Whittle | Chief Operating Officer | Intent to Sell (Form 144) | -56,700 | $156.07 | – |
| 11 Aug 2026 | Kenneth A. Goldman | Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 11 Aug 2026 | Janet Napolitano | Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 11 Aug 2026 | Ming Hsieh | Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 11 Aug 2026 | Judith Sim | Lead Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 11 Aug 2026 | Jean Hu | Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 11 Aug 2026 | James Stavridis | Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 11 Aug 2026 | Derek Kan | Independent Director | Other Derivative Acquisition | +1,836 | – | 1,836 |
| 3 Aug 2026 | Christiane Ohlgart | Chief Accounting Officer, CFO and Principal Financial & Accounting Officer | Derivative Exercise and Sale | -968 | $164.59 | 10,393 |
| 2 Aug 2026 | Michael Xie | Co-Founder, President, CTO & Director | Intent to Sell (Form 144) | -3,121 | $161.95 | – |
| 2 Aug 2026 | Michael Xie | Co-Founder, President, CTO & Director | Derivative Exercise and Sale | -6,306 | $163.98 | 55,917,860 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 12,077,511 | 1.6% | 3.6 |
| 30 Sep 2026 | 12,503,836 | 1.7% | 2.9 |
| 15 Sep 2026 | 13,718,909 | 1.9% | 3.5 |
| 31 Aug 2026 | 13,556,993 | 1.8% | 3.1 |
| 14 Aug 2026 | 14,198,087 | 1.9% | 3.0 |
| 31 Jul 2026 | 14,384,628 | 2.0% | 2.5 |
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