Fortinet, Inc.
MX ˙ BMV ˙ US34959E1091
SecurityMX:FTNT / Fortinet, Inc.
InstitutionSumitomo Life Insurance Co
Latest Disclosed Ownership19,948 shares
Latest Disclosed Value $ 1,630,151
Sumitomo Life Insurance Co reports 9.45% decrease in ownership of FTNT / Fortinet, Inc.

On May 12, 2026 - Sumitomo Life Insurance Co filed a 13F-HR form disclosing ownership of 19,948 shares of Fortinet, Inc. (MX:FTNT) valued at $1,630,151 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 22,029 shares of Fortinet, Inc.. This represents a change in shares of -9.45% during the quarter.

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)
2026-05-12 2026-03-31 13F FORTINET INC COM Common 34959E109 19,948 -2,081 -9.45 1,630 -6.80 0.0383
2026-02-13 2025-12-31 13F FORTINET INC COM Common 34959E109 22,029 70 0.32 1,749 -5.25 0.0479
2025-11-12 2025-09-30 13F FORTINET INC COM Common 34959E109 21,959 -18,187 -45.30 1,846 -56.50 0.0573
2025-08-05 2025-06-30 13F FORTINET INC COM Common 34959E109 40,146 -1,121 -2.72 4,244 6.85 0.2879
2025-05-02 2025-03-31 13F FORTINET INC COM Common 34959E109 41,267 -290 -0.70 3,972 1.17 0.1421
2025-01-23 2024-12-31 13F FORTINET INC COM Common 34959E109 41,557 -6,301 -13.17 3,926 5.79 0.0741
2024-10-16 2024-09-30 13F FORTINET INC COM Common 34959E109 47,858 485 1.02 3,711 29.98 0.0729
2024-07-19 2024-06-30 13F FORTINET INC COM Common 34959E109 47,373 3,816 8.76 2,855 -4.03 0.0661
2024-04-26 2024-03-31 13F FORTINET INC COM Common 34959E109 43,557 -960 -2.16 2,975 14.20 0.0772
2024-01-30 2023-12-31 13F FORTINET INC COM Common 34959E109 44,517 -1,181 -2.58 2,606 -2.83 0.0810
2023-10-23 2023-09-30 13F FORTINET INC COM Common 34959E109 45,698 2,780 6.48 2,682 -17.36 0.0755
2023-07-20 2023-06-30 13F FORTINET INC COM Common 34959E109 42,918 1,855 4.52 3,244 162,100.00 0.1427
2023-04-27 2023-03-31 13F FORTINET INC COM Common 34959E109 41,063 -195 -0.47 3 0.00 0.2296
2023-01-18 2022-12-31 13F FORTINET INC COM Common 34959E109 41,258 -3,140 -7.07 2 -99.91 0.1487
2022-10-31 2022-09-30 13F FORTINET INC COM Common 34959E109 44,398 2,538 6.06 2,181 -7.90 0.0924
2022-07-22 2022-06-30 13F FORTINET INC COM Common 34959E109 41,860 33,768 417.30 2,368 -14.36 0.0663
2022-04-27 2022-03-31 13F FORTINET INC COM Common 34959E109 8,092 169 2.13 2,765 -2.91 0.0684
2022-02-04 2021-12-31 13F FORTINET INC COM Common 34959E109 7,923 203 2.63 2,848 26.30 0.0678
2021-10-25 2021-09-30 13F FORTINET INC COM Common 34959E109 7,720 -263 -3.29 2,255 18.62 0.0603
2021-07-20 2021-06-30 13F FORTINET INC COM Common 34959E109 7,983 432 5.72 1,901 36.47 0.0604
2021-04-27 2021-03-31 13F FORTINET INC COM Common 34959E109 7,551 -310 -3.94 1,393 19.26 0.0561
2021-02-05 2020-12-31 13F FORTINET INC COM Common 34959E109 7,861 7,861 1,168 0.0493
2017-01-27 2016-12-31 13F FORTINET INC COM Common 34959E109 0 -21,217 -100.00 0 -100.00
2016-10-25 2016-09-30 13F FORTINET INC COM Common 34959E109 21,217 -2,575 -10.82 784 4.26 0.1163
2016-07-15 2016-06-30 13F FORTINET INC COM Common 34959E109 23,792 -908 -3.68 752 -0.66 0.1030
2016-04-26 2016-03-31 13F FORTINET INC COM Common 34959E109 24,700 -645 -2.54 757 -4.18 0.0985
2016-01-21 2015-12-31 13F FORTINET INC COM Common 34959E109 25,345 -605 -2.33 790 -28.31 0.0997
2015-10-22 2015-09-30 13F FORTINET INC COM Common 34959E109 25,950 25,950 1,102 0.1462
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.