Fortinet, Inc.
US ˙ NasdaqGS ˙ US34959E1091

SecurityFTNT / Fortinet, Inc.
InstitutionOssiam
Latest Disclosed Ownership722,143 shares
Latest Disclosed Value $ 59,013,526
Ossiam reports 4.39% increase in ownership of FTNT / Fortinet, Inc.

On May 14, 2026 - Ossiam filed a 13F-HR form disclosing ownership of 722,143 shares of Fortinet, Inc. (US:FTNT) valued at $59,013,526 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 691,803 shares of Fortinet, Inc.. This represents a change in shares of 4.39% during the quarter. The current value of the position is $105,779,507 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)
2026-05-14 2026-03-31 13F FORTINET COM 34959E109 722,143 30,340 4.39 59,014 7.42 1.0380
2026-02-13 2025-12-31 13F FORTINET COM 34959E109 691,803 -21,202 -2.97 54,936 -8.36 1.0971
2025-11-14 2025-09-30 13F FORTINET COM 34959E109 713,005 14,790 2.12 59,949 -18.78 0.7716
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 698,215 68,826 10.94 73,815 21.84 0.8301
2025-05-14 2025-03-31 13F FORTINET COM 34959E109 629,389 2,740 0.44 60,585 2.33 0.8460
2025-02-13 2024-12-31 13F FORTINET COM 34959E109 626,649 384,249 158.52 59,206 214.95 1.0221
2024-11-13 2024-09-30 13F FORTINET COM 34959E109 242,400 699 0.29 18,798 29.05 0.3634
2024-08-13 2024-06-30 13F FORTINET COM 34959E109 241,701 7,693 3.29 14,567 -8.87 0.2761
2024-05-13 2024-03-31 13F FORTINET COM 34959E109 234,008 -6,625 -2.75 15,985 13.50 0.2800
2024-02-13 2023-12-31 13F FORTINET COM 34959E109 240,633 3,052 1.28 14,084 1.03 0.2268
2023-11-14 2023-09-30 13F FORTINET COM 34959E109 237,581 4,628 1.99 13,941 -20.83 0.2463
2023-08-11 2023-06-30 13F FORTINET COM 34959E109 232,953 -724,146 -75.66 17,609 -72.32 0.3164
2023-05-12 2023-03-31 13F FORTINET COM 34959E109 957,099 82,245 9.40 63,609 48.72 1.3216
2023-02-13 2022-12-31 13F FORTINET COM 34959E109 874,854 -7,727 -0.88 42,772 -1.36 1.1087
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 882,581 4,711 0.54 43,361 -12.70 1.2558
2022-08-12 2022-06-30 13F FORTINET COM 34959E109 877,870 703,796 404.31 49,670 -16.50 1.4946
2022-05-13 2022-03-31 13F FORTINET COM 34959E109 174,074 130 0.07 59,488 -4.84 1.5564
2022-02-14 2021-12-31 13F FORTINET COM 34959E109 173,944 25 0.01 62,515 23.08 1.6380
2021-11-12 2021-09-30 13F FORTINET COM 34959E109 173,919 0 0.00 50,791 7.27 1.4374
2021-08-13 2021-06-30 13F FORTINET COM 34959E109 173,919 -485 -0.28 47,348 47.21 1.2849
2021-05-17 2021-03-31 13F FORTINET COM 34959E109 174,404 -490 -0.28 32,164 23.82 1.0013
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 174,894 962 0.55 25,977 26.77 0.9065
2020-11-12 2020-09-30 13F FORTINET COM 34959E109 173,932 -4,334 -2.43 20,491 -16.26 0.8577
2020-08-13 2020-06-30 13F FORTINET COM 34959E109 178,266 386 0.22 24,471 35.98 1.5645
2020-05-14 2020-03-31 13F FORTINET COM 34959E109 177,880 177,067 21,779.46 17,996 20,585.06 1.2249
2020-02-14 2019-12-31 13F FORTINET COM 34959E109 813 431 112.83 87 200.00 0.0066
2019-11-13 2019-09-30 13F FORTINET COM 34959E109 382 -575 -60.08 29 -60.81 0.0020
2019-08-13 2019-06-30 13F FORTINET COM 34959E109 957 957 74 0.0058
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.