Fortinet, Inc.
US ˙ NasdaqGS ˙ US34959E1091

SecurityFTNT / Fortinet, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership307,319 shares
Latest Disclosed Value $ 25,114,109
Engineers Gate Manager LP reports 235.29% increase in ownership of FTNT / Fortinet, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 307,319 shares of Fortinet, Inc. (US:FTNT) valued at $25,114,109 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 91,659 shares of Fortinet, Inc.. This represents a change in shares of 235.29% during the quarter. The current value of the position is $45,016,087 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)
2026-05-15 2026-03-31 13F FORTINET COM 34959E109 307,319 215,660 235.29 25,114 245.07 0.3139
2026-02-17 2025-12-31 13F FORTINET COM 34959E109 91,659 69,896 321.17 7,279 297.92 0.0863
2025-11-14 2025-09-30 13F FORTINET COM 34959E109 21,763 -55,022 -71.66 1,830 -77.47 0.0210
2025-08-14 2025-06-30 13F FORTINET COM 34959E109 76,785 -125,383 -62.02 8,118 -58.29 0.1010
2025-05-15 2025-03-31 13F FORTINET COM 34959E109 202,168 47,684 30.87 19,461 33.33 0.3280
2025-02-14 2024-12-31 13F FORTINET COM 34959E109 154,484 70,033 82.93 14,596 122.86 0.2540
2024-11-14 2024-09-30 13F FORTINET COM 34959E109 84,451 -135,280 -61.57 6,549 -50.55 0.1278
2024-08-14 2024-06-30 13F FORTINET COM 34959E109 219,731 168,992 333.06 13,243 282.19 0.2986
2024-05-15 2024-03-31 13F FORTINET COM 34959E109 50,739 36,051 245.45 3,466 303.38 0.0912
2024-02-14 2023-12-31 13F FORTINET COM 34959E109 14,688 -29,808 -66.99 860 -67.10 0.0245
2023-11-14 2023-09-30 13F FORTINET COM 34959E109 44,496 19,800 80.17 2,611 39.92 0.0965
2023-08-14 2023-06-30 13F FORTINET COM 34959E109 24,696 -37,873 -60.53 1,867 -55.12 0.0706
2023-05-15 2023-03-31 13F FORTINET COM 34959E109 62,569 -38,965 -38.38 4,158 -16.22 0.1737
2023-02-14 2022-12-31 13F FORTINET COM 34959E109 101,534 91,292 891.35 4,964 886.68 0.2982
2022-11-14 2022-09-30 13F FORTINET COM 34959E109 10,242 -21,681 -67.92 503 -72.15 0.0313
2022-08-15 2022-06-30 13F FORTINET COM 34959E109 31,923 28,066 727.66 1,806 37.03 0.0662
2022-05-16 2022-03-31 13F FORTINET COM 34959E109 3,857 1,712 79.81 1,318 70.95 0.0516
2022-02-14 2021-12-31 13F FORTINET COM 34959E109 2,145 -5,143 -70.57 771 -63.77 0.0347
2021-11-15 2021-09-30 13F FORTINET COM 34959E109 7,288 5,823 397.47 2,128 509.74 0.1213
2021-08-16 2021-06-30 13F FORTINET COM 34959E109 1,465 1,465 349 0.0224
2021-05-17 2021-03-31 13F FORTINET COM 34959E109 0 -3,942 -100.00 0 -100.00
2021-02-16 2020-12-31 13F FORTINET COM 34959E109 3,942 -12,409 -75.89 586 -69.57 0.0254
2020-11-16 2020-09-30 13F FORTINET COM 34959E109 16,351 -7,429 -31.24 1,926 -40.99 0.0904
2020-08-17 2020-06-30 13F FORTINET COM 34959E109 23,780 23,780 45.43 3,264 69.47 0.1661
2020-05-15 2020-03-31 13F FORTINET COM 34959E109 0 -54,199 -100.00 0 -100.00
2020-02-14 2019-12-31 13F FORTINET COM 34959E109 54,199 -10,903 -16.75 5,786 15.79 0.2544
2019-11-14 2019-09-30 13F FORTINET COM 34959E109 65,102 5,078 8.46 4,997 8.37 0.2538
2019-08-14 2019-06-30 13F FORTINET COM 34959E109 60,024 45,824 322.70 4,611 286.83 0.2545
2019-05-15 2019-03-31 13F FORTINET COM 34959E109 14,200 14,200 -76.34 1,192 -74.15 0.0722
2019-02-14 2018-12-31 13F FORTINET COM 34959E109 0 -83,440 -100.00 0 -100.00
2018-11-01 2018-09-30 13F FORTINET COM 34959E109 83,440 -12,638 -13.15 7,699 28.36 0.5915
2018-08-03 2018-06-30 13F FORTINET COM 34959E109 96,078 -9,010 -8.57 5,998 6.52 0.4675
2018-05-07 2018-03-31 13F FORTINET COM 34959E109 105,088 105,088 9.38 5,631 -6.12 0.3753
2017-11-13 2017-09-30 13F FORTINET COM 34959E109 0 -145,112 -100.00 0 -100.00
2017-08-10 2017-06-30 13F FORTINET COM 34959E109 145,112 53,976 59.23 5,433 55.45 0.4896
2017-05-05 2017-03-31 13F FORTINET COM 34959E109 91,136 36,026 65.37 3,495 110.54 0.3470
2017-02-10 2016-12-31 13F FORTINET COM 34959E109 55,110 30,397 123.00 1,660 81.82 0.1781
2016-11-09 2016-09-30 13F FORTINET COM 34959E109 24,713 24,713 -55.16 913 -45.00 0.0951
2016-08-11 2016-06-30 13F FORTINET COM 34959E109 0 -81,913 -100.00 0 -100.00
2016-05-09 2016-03-31 13F FORTINET COM 34959E109 81,913 4,832 6.27 2,509 4.41 0.1956
2016-02-05 2015-12-31 13F FORTINET COM 34959E109 77,081 -23,337 -23.24 2,403 -43.67 0.1623
2015-11-16 2015-09-30 13F FORTINET COM 34959E109 100,418 54,610 119.21 4,266 125.36 0.3633
2015-08-14 2015-06-30 13F FORTINET COM 34959E109 45,808 45,808 1,893 0.1853
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.