Fortinet, Inc.
US ˙ NasdaqGS ˙ US34959E1091

SecurityFTNT / Fortinet, Inc.
InstitutionIng Groep Nv
Latest Disclosed Ownership107,694 shares
Latest Disclosed Value $ 8,800,754
Ing Groep Nv reports 56.14% decrease in ownership of FTNT / Fortinet, Inc.

On May 11, 2026 - Ing Groep Nv filed a 13F-HR form disclosing ownership of 107,694 shares of Fortinet, Inc. (US:FTNT) valued at $8,800,754 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 245,559 shares of Fortinet, Inc.. This represents a change in shares of -56.14% during the quarter. The current value of the position is $15,775,017 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F FORTINET COM 34959E109 107,694 -137,865 -56.14 8,801 -54.87 0.0538
2026-02-11 2025-12-31 13F FORTINET COM 34959E109 245,559 117,412 91.62 19,500 80.98 0.1176
2025-11-06 2025-09-30 13F FORTINET COM 34959E109 128,147 7,612 6.32 10,775 -15.44 0.0583
2025-08-06 2025-06-30 13F FORTINET COM 34959E109 120,535 -146,673 -54.89 12,743 -50.46 0.0775
2025-05-09 2025-03-31 13F FORTINET COM 34959E109 267,208 -64,934 -19.55 25,721 -18.03 0.1784
2025-02-03 2024-12-31 13F FORTINET COM 34959E109 332,142 -271,667 -44.99 31,381 -32.98 0.2115
2024-11-06 2024-09-30 13F FORTINET COM 34959E109 603,809 279,460 86.16 46,825 139.54 0.2721
2024-08-13 2024-06-30 13F FORTINET COM 34959E109 324,349 12,000 3.84 19,549 -8.38 0.1160
2024-05-10 2024-03-31 13F FORTINET COM 34959E109 312,349 -43,514 -12.23 21,337 2.44 0.1463
2024-02-08 2023-12-31 13F FORTINET COM 34959E109 355,863 144,420 68.30 20,829 67.87 0.1673
2023-10-27 2023-09-30 13F FORTINET COM 34959E109 211,443 71,752 51.36 12,407 17.50 0.1095
2023-08-07 2023-06-30 13F FORTINET COM 34959E109 139,691 -48,251 -25.67 10,559 -15.46 0.0801
2023-05-09 2023-03-31 13F FORTINET COM 34959E109 187,942 187,942 12,491 0.1213
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 0 -139,594 -100.00 0 -100.00
2022-08-08 2022-06-30 13F FORTINET COM 34959E109 139,594 139,594 7,898 0.0913
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 0 -25,234 -100.00 0 -100.00
2022-02-11 2021-12-31 13F FORTINET COM 34959E109 25,234 13,723 119.22 9,069 169.75 0.0811
2021-11-02 2021-09-30 13F FORTINET COM 34959E109 11,511 378 3.40 3,362 26.77 0.0432
2021-08-13 2021-06-30 13F FORTINET COM 34959E109 11,133 11,133 2,652 0.0423
2021-05-12 2021-03-31 13F FORTINET COM 34959E109 0 -8,937 -100.00 0 -100.00
2021-02-11 2020-12-31 13F FORTINET COM 34959E109 8,937 5,964 200.61 1,327 279.14 0.0296
2020-11-12 2020-09-30 13F FORTINET COM 34959E109 2,973 2,973 -66.73 350 -73.62 0.0144
2020-05-06 2020-03-31 13F FORTINET COM 34959E109 0 -9,737 -100.00 0 -100.00
2020-02-10 2019-12-31 13F FORTINET COM 34959E109 9,737 880 9.94 1,040 52.94 0.0316
2019-11-08 2019-09-30 13F FORTINET COM 34959E109 8,857 -12,852 -59.20 680 -59.23 0.0173
2019-08-12 2019-06-30 13F FORTINET COM 34959E109 21,709 107 0.50 1,668 -8.05 0.0291
2019-05-13 2019-03-31 13F FORTINET COM 34959E109 21,602 4,761 28.27 1,814 52.95 0.0393
2019-02-13 2018-12-31 13F FORTINET COM 34959E109 16,841 -5,137 -23.37 1,186 -41.52 0.0257
2018-11-06 2018-09-30 13F FORTINET COM 34959E109 21,978 -165 -0.75 2,028 46.74 0.0350
2018-08-10 2018-06-30 13F FORTINET COM 34959E109 22,143 22,143 0.75 1,382 -31.85 0.0264
2018-05-07 2018-03-31 13F FORTINET COM 34959E109 0 -182,066 -100.00 0 -100.00
2018-02-06 2017-12-31 13F FORTINET COM 34959E109 182,066 175,120 2,521.16 7,954 3,094.38 0.1327
2017-11-08 2017-09-30 13F FORTINET COM 34959E109 6,946 340 5.15 249 0.81 0.0048
2017-07-25 2017-06-30 13F FORTINET COM 34959E109 6,606 -420,980 -98.46 247 -96.98 0.0047
2014-02-14 2013-12-31 13F FORTINET COM 34959E109 427,586 106,144 33.02 8,175 25.40 0.0412
2013-11-13 2013-09-30 13F FORTINET COM 34959E109 321,442 -10,230 -3.08 6,519 12.44 0.0328
2013-08-14 2013-06-30 13F FORTINET COM 34959E109 331,672 331,672 5,798 0.0306
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.