Fortinet, Inc.
US ˙ NasdaqGS ˙ US34959E1091

SecurityFTNT / Fortinet, Inc.
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership145,898 shares
Latest Disclosed Value $ 11,923
Natixis Advisors, L.p. reports 53.52% decrease in ownership of FTNT / Fortinet, Inc.

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 145,898 shares of Fortinet, Inc. (US:FTNT) valued at $11,922,785 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 313,884 shares of Fortinet, Inc.. This represents a change in shares of -53.52% during the quarter. The current value of the position is $21,371,139 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)
2026-05-13 2026-03-31 13F FORTINET COM 34959E109 145,898 -167,986 -53.52 12 -54.17 0.0166
2026-02-10 2025-12-31 13F FORTINET COM 34959E109 313,884 26,084 9.06 25 0.00 0.0353
2025-11-13 2025-09-30 13F FORTINET INC COM 34959E109 287,800 -69,760 -19.51 24 -35.14 0.0353
2025-08-13 2025-06-30 13F FORTINET COM 34959E109 357,560 56,077 18.60 38 27.59 0.0600
2025-05-08 2025-03-31 13F FORTINET COM 34959E109 301,483 99,167 49.02 29 52.63 0.0536
2025-02-10 2024-12-31 13F FORTINET COM 34959E109 202,316 27,243 15.56 19 46.15 0.0357
2024-11-06 2024-09-30 13F FORTINET COM 34959E109 175,073 3,836 2.24 14 30.00 0.0265
2024-08-01 2024-06-30 13F FORTINET COM 34959E109 171,237 2,873 1.71 10 -9.09 0.0224
2024-04-25 2024-03-31 13F FORTINET COM 34959E109 168,364 -262 -0.16 12 22.22 0.0264
2024-02-06 2023-12-31 13F FORTINET COM 34959E109 168,626 -14,748 -8.04 10 -10.00 0.0260
2023-11-13 2023-09-30 13F FORTINET COM 34959E109 183,374 -12,263 -6.27 11 -28.57 0.0329
2023-08-15 2023-06-30 13F FORTINET COM 34959E109 195,637 -3,647 -1.83 15 7.69 0.0457
2023-05-11 2023-03-31 13F FORTINET COM 34959E109 199,284 -6,251 -3.04 13 30.00 0.0456
2023-01-27 2022-12-31 13F FORTINET COM 34959E109 205,535 23,708 13.04 10 -99.89 0.0380
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 181,827 -6,185 -3.29 8,933 -16.03 0.0378
2022-08-12 2022-06-30 13F FORTINET COM 34959E109 188,012 157,010 506.45 10,638 0.41 0.0468
2022-05-12 2022-03-31 13F FORTINET COM 34959E109 31,002 4,648 17.64 10,595 11.86 0.0404
2022-02-08 2021-12-31 13F FORTINET COM 34959E109 26,354 1,483 5.96 9,472 30.41 0.0362
2021-11-15 2021-09-30 13F FORTINET COM 34959E109 24,871 -22,064 -47.01 7,263 -35.03 0.0299
2021-08-12 2021-06-30 13F FORTINET COM 34959E109 46,935 -449 -0.95 11,179 27.94 0.0522
2021-05-05 2021-03-31 13F FORTINET COM 34959E109 47,384 125 0.26 8,738 24.49 0.0456
2021-02-12 2020-12-31 13F FORTINET COM 34959E109 47,259 -5,665 -10.70 7,019 12.57 0.0404
2020-11-12 2020-09-30 13F FORTINET COM 34959E109 52,924 -3,279 -5.83 6,235 -19.18 0.0392
2020-08-11 2020-06-30 13F FORTINET COM 34959E109 56,203 28,074 99.80 7,715 171.08 0.0512
2020-04-27 2020-03-31 13F FORTINET COM 34959E109 28,129 12,810 83.62 2,846 74.07 0.0232
2020-02-10 2019-12-31 13F FORTINET COM 34959E109 15,319 -2,572 -14.38 1,635 19.08 0.0115
2019-11-12 2019-09-30 13F FORTINET COM 34959E109 17,891 3,539 24.66 1,373 24.48 0.0109
2019-08-12 2019-06-30 13F FORTINET COM 34959E109 14,352 14,352 1,103 0.0090
2018-11-13 2018-09-30 13F FORTINET COM 34959E109 0 -27,171 -100.00 0 -100.00
2018-08-14 2018-06-30 13F/A-1 FORTINET COM 34959E109 27,171 1,697 6.66 1,696 24.25 0.0162
2018-08-14 2018-06-30 13F FORTINET COM 34959E109 27,171 1,696
2018-05-10 2018-03-31 13F FORTINET COM 34959E109 25,474 25,474 1,365 0.0135
2017-02-07 2016-12-31 13F FORTINET COM 34959E109 0 -18,023 -100.00 0 -100.00
2016-11-04 2016-09-30 13F FORTINET COM 34959E109 18,023 405 2.30 666 19.57 0.0086
2016-08-01 2016-06-30 13F FORTINET COM 34959E109 17,618 1,854 11.76 557 15.32 0.0077
2016-05-06 2016-03-31 13F FORTINET COM 34959E109 15,764 5,559 54.47 483 51.89 0.0072
2016-02-12 2015-12-31 13F FORTINET COM 34959E109 10,205 10,205 0.00 318 0.0052
2015-11-12 2015-09-30 13F FORTINET COM 34959E109 0 0 0 0.0000
2015-08-14 2015-06-30 13F FORTINET COM 34959E109 0 -142,196 -100.00 0 -100.00
2015-05-15 2015-03-31 13F FORTINET COM 34959E109 142,196 -12,396 -8.02 4,970 4.85 0.0872
2015-02-05 2014-12-31 13F FORTINET COM 34959E109 154,592 -5,048 -3.16 4,740 17.50 0.0887
2014-11-03 2014-09-30 13F FORTINET COM 34959E109 159,640 7,874 5.19 4,034 5.77 0.0809
2014-08-13 2014-06-30 13F FORTINET COM 34959E109 151,766 18,581 13.95 3,814 29.99 0.0546
2014-05-13 2014-03-31 13F FORTINET COM 34959E109 133,185 133,185 2,934 0.0452
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.